what is breaking strength of wire rope made in china

This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don"t save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

6 x 19 wire rope is a general purpose steel rope that’s widely used and is commonly used for winch lines, skylines and chokers. This wire rope overs a great overall combination of both flexibility and wear resistance.

* EIPS (Extra Improved Plowed Steel) wire rope has roughly 10% more strength than regular IPS. Independent wire rope core ( IWRC ) provides added strength, reduces the amount of stretch. IWRC wire rope also is resistance to heat and provides extra corrosion resistance over a typical bright wire finish.

Wire ropes can be seen everywhere around us, they are made of strands or bundles of individual wires constructed around an independent core, suitable for construction, industrial, fitness, commercial, architectural, agricultural, and marine rigging applications.

Wire rod is made from high carbon steel wires(0.35 to 0.85 percent carbon) in a hot rolling process of a required diameter, usually from 5.5mm to 8 mm.

Wire rod is drawn to the required diameter by the 1st drawing machine after descaling dust and rust, adding mechanical properties suitable for application.

Positioning the wires different or the same size lay in multiple layers and same direction, or cross lay and diameter is maintained by one-third of the rope size.

So in theory, it is very simple to manufacture wire ropes. However there are many more details that must be closely monitored and controlled, and this requires time and experienced personnel since it is a super complicated project you cannot imagine.

While talking to people at a recent trade show it hit me: There is a lack of information in the marketplace concerning the quality of available wire rope . Most people feel that there is one general level of cable quality, usually based on their experience with imported wire rope. Let"s take a minute to clear up the confusions many people have about wire rope availability and performance.

When I dig a little deeper, I always find out that the cable they are using is low quality import material, often from China, that never seems to perform the way they intended. Short service life, broken wires and low break strength are often tolerated because the wire rope is just so very cheap. And the lowering of quality and performance from your wire rope tends to feed on itself: Inexpensive cable performance is sub-par, so the purchaser becomes conditioned to poor performance. This translates into a buying decision focused solely on the price of the wire rope, which in turn leads to distributors looking for less and less expensive material, which dictates the quality, and so on.

Ultimately, this cycle results in wire rope that is manufactured to just meet the thresholds of performance required by specification, and nothing more. Some applications can accept this material, but the majority of customers would be best served by selecting a higher quality wire rope.

When the performance is a key element of your application, you should be requesting a high quality domestic wire rope. Why should you purchase a domestic rope? Domestic manufacturers work with smaller lot sizes and focus on quality.

It will require a larger investment to purchase and employ the higher quality material, but that will end the downward quality spiral created by using the least expensive cable you can find. You will notice, first and foremost, that your cable will last longer and perform at an improved level. You will also notice that the added cost for purchasing a domestic wire rope is minimal when compared to the extended life you will receive.

So for your next purchase, request a domestic wire rope for your application. Here are some general rules to ensure you receive the best cable available:

1. Not all wire rope is created equal. There are specifications for wire rope, including Federal Specification RR-W-410 and Military Specification MIL-DTL-83420, both detailing the level of quality and performance required for specific applications. When purchasing a wire rope, be sure to reference one of these specifications to ensure you receive a higher quality material.

2. Just because you purchased the rope from a domestic source does not mean that it is domestic.Make sure you specifically request a domestic wire rope.

3. Domestic Wire rope is available.there are several manufacturers that would be more than delighted t quote your requirements. You can find a list of companies on the Domestic Wire Rope Committee web site.

a. Wires: steel wires for wire ropes are normally made of non-alloy carbon steel with a carbon content of 0.4 to 0.95%. The tensile forces and to run over sheaves with relatively small diameters.

b. Strand: the strand is a component of wire rope usually consisting of an assembly of wires of appropriate diamsions laid helically in one or more layers around a central element.

c. Core: the core is the central element, of fiber or steel, around which are laid helically the outer strands of wire rope. The core provides proper support for the strands under normal bending and loading conditions.

d. Wire rope is several strands of metal wire twisted into a helix forming a composite "rope", in a pattern known as "laid rope". Larger diameter wire rope consists of multiple strands.

Mine hoisting, blast furnace hoisting, large casting, oil drilling, forestry and marine industries,all kinds ofelevator, large hoisting, ground cable car ships and offshore facilities, cable railing.

Zinc coated carbon steel offers some corrosion resistance. It remains ductile over long periods of working. Usually higher break strengths than stainless steels.

Established in 2005, Jiangsu Safety Steel Wire Rope Co., Ltd. is a professional steel wire rope manufacturer and exporter with a profound experience. The company is located in Wuxi, Jiangsu, China covering an area of 57,108.70 square meters. They have a total annual production of steel wire rope is 25000 to 30000 tons and a registered capital 13 million U.S. dollars. Jiangsu Safety Steel Wire Rope Co., Ltd. has plenty of high-quality products to offer.Toho-Rongkee

Chongqing Toho-Rongkee Electronic and Machinery Co., Ltd is one of the best wire rope manufacturers in China that follows ISO 9001:2008, TUV, CE, SGS qualification standard on every production method and fabricated. Also offer a wide range of lifting tools, equipment, and various riggings that meet your standards. Employs over 1000 skilled workers and staff in 7 advanced factories in China.Tianli Stainless Steel Products Co., Ltd

Tianli Stainless Steel Products Co., Ltd is specialized in manufacturing steel wire ropes headquarters in Dainan Town, Jiangsu Province China. Currently having more than 50 existing employees in over 6600 square meters factory area. They can provide excellent advice and assistance to ensure you obtain the right products at the lowest cost.Guizhou Wire Rope Incorporated Company

With more than 40 years of manufacturing and technique experience, you can totally rely on Guizhou Wire Rope Incorporated Company, they have excellent production lines, modern production techniques, and excellent quality control systems. All products such as steel wire, pre-stressed wire rope, PVC coated wire rope, etc. are not only famous with excellent quality but in reasonable prices and considerate services in China. This company also receives good popularity in the overseas market.Nantong Jiaan Metal Material Co., Ltd.

Established in 2013, Jiaan Metal Material is one of the respected manufacturers of steel wire rope located in Nantong, Jiangsu, China. All the production methods, from raw material smelting, heat treatment, wire drawing, and rope twisting to physical and chemical performance examining, are under strict and scientific control based on ISO 9001 certification standard.Nantong Lili hardware products Co., Ltd.

Started in 1998, Nantong Lili hardware products Co., Ltd. continually improving and striving to provide high-grade wire rope to customers worldwide. ISO9001:2008, ISO14001:2004 certified company located in Jiangsu, China. They mainly engaged in producing steel wire rope, stainless steel wire, steel strip, stainless steel strip, spring steel strip, spring steel wire, carbon steel wire, and more.Nantong New Jianghai Internation Trade Co., Ltd.

Set up in the year 2016, Nantong New Jianghai Internation Trade Co., Ltd is an expert wire rope provider situated in Nantong, China. Owns advanced technologies and machinery to manufacture a high-class and comprehensive quality solution. They have more than 70 professional employees working and improving products according to ISO9001:2015 authentication.Jiangsu Zhongying Steel Cable Co., Ltd.

Established in 2004, Zhongying Steel Cable is one of the leading manufacturers and reputable provider of steel wire ropes situated in Nantong, Jiangsu, China. Their factory has 80, 000 square meters and the building area is about to 65,000 square meters. Workshops are equipped with advanced producing equipment and comprehensive testing facilities that’s why the partnership with them will bring business satisfaction for you.Qingdao Haito Rigging Hardware Co., Ltd

A large enterprise located in Qingdao, Shandong, China, which engaged in manufacturing rigging hardware such as steel wire rope accessories, wire rope clips, load binder, chain, wire rope, and more. They have an abundant supply of superior quality products. Founded in 2009, Haito Rigging Hardware continuously developed and improving products supported by good experience and professional employees.Gustav Wolf

With over 130 years of experience and development, Gustav Wolf is a leading superior steel wire and steel wire ropes manufacturer associated with quality and safety. Produced products according to ISO9001:2015, ISO14001:2015 certification which can meet your requirements and demands. Employs over 115 hardworking workers and staff who aim to serve customers with honesty, loyalty, and perseverance.Jiangsu Xiangchuan Rope Technology Co., Ltd.

Specialized in manufacturing high-standard wire rope, Xiangchuan Rope Technology is a dedicated supplier and manufacturer with vast experience in the field. Own a modern facility with an area of about 38, 000 square meters and employs 138 staff members and workers. Their advanced production equipment, technical know-how, skilled workers guarantee that in Xiangchuan Rope Technology you have a reliable partner.JULI SLING CO., LTD.

For more than 33 years of experience in creating comprehensive products such as wire rope, JULI SLING earned a good reputation in the steel industry appreciated by foreign and domestics customers. JULI is recognized as a pioneer in China’s lifting and rigging industry, the standard makers in rigging field, the advocate of worldwide rigging civilization. Partnership with this company will skyrocket your business project.Nantong Julong Metal Products Co., Ltd

Nantong Julong Metal Products Co., Ltd is a large private enterprise founded in 2009 that specialized in producing any types of wire rope, headquarters in Jiangsu, China. Get 100% ideal products, at a cost-effective price here in Julong Metal. Be one of their satisfied customers such as in Europe, Africa, North America, South America, Asia, the Middle East, etc.YunFeng Steel Wire Rope Products Ltd.

Located in Jiangsu province, China, YunFeng Steel Wire Rope is a professional manufacturer of all kinds of wire rope offer in excellent quality and reasonable price to customers. They can meet customers’ demands and requirements by manufacturing all kinds of products with international standards.Sinounion Industries

Founded in 1999, Sinounion Industries is a professional Steel Wire Rope manufacturer in China. Also offer Rigging Hardware, Lifting Equipment, and various Forging & Casting products. All products are manufactured according to ISO9001, ISO14001, CE, and GS standards. The company owns a wide factory area in Qingdao, Shandong province with about 35000 square meters.Ningbo BST Metal Products Co., Ltd.

Established in 2002, BST Metal Products is one of the largest and reputable steel wire rope manufacturers in China with an area of 78,000 square meters factory workshop. Backed up by more than 350 professional people & technical engineers who have a vast experience in the field, BST Metal Products ensure great and fast production exceed the national and international guidelines.Jiangsu Yasheng Metal Products Co., Ltd.

As an ISO9001:2015, ISO/TS16949:2009, ISO9001: 2000 certified company, Jiangsu Yasheng Metal Products Co., Ltd. devoted itself to producing excellent products at a favorable cost. If you`re looking for a wire rope manufacturer, then Yasheng Metal Products is the best choice! Get 100% quality products prepared by solid technical strength and professional service team.Chongqing Geyo Machinery corporation

Geyo Machinery corporation a reliable manufacturing company that focuses on research, production, sales, and service of high-quality products. Mainly engaged in manufacturing wire rope, wire rope slings, tamping rammer, power trowel, scarifying machine, etc. They have their own advanced production facilities, expert technical team, and a professional quality control team.SHANGHAIMETAL

Started in the year 1980, SHANGHAIMETAL is a premier wire rope provider. Together with a team of experts, innovative machinery, and dedicated workers, they guarantee absolute customer satisfaction. Shanghai Metal is always passionate about working and supplying excellent services to clients throughout the world. All their products are manufactured with high-quality at a reasonable cost.Huazhuo HD Machinery

Established in 1958, Qingdao Huazhuo HD Machinery Co., Ltd. is a trusted wire rope manufacturer with a profound experience, strong workmanship, and professional service team that ensures the best product at best price offer to clients around the world. A leading supplier of high-standard wire rope, rigging hardware, marine hardware, chain, lifting tools, and other high-grade metal products.

Designed for higher breaking strength and better strength to weight ratio, our crane wire rope is made of high-toughness steel wires that have been stretched to their tolerance limit prior to being stranded together to form a rope with optimum spacing between each strand.

Even if wire strands are tightly twisted, there still be spaces in places where the strand touches with each other. To improve the fill factor of the wire rope, we have added irregularly-shaped wire strand to the rope and sent it through rotary swaging process. Steel wires that are laid in a parallel pattern increase the cross section of the rope. Safety

Special-purpose steel rope is commonly seen in various engineering projects. Via precision design and rigorous test, the rope usually can meet very high safety standards. A large number of wires are arranged in a parallel pattern to form a strand. Various strands then are twisted to produce the steel rope. Such a rope-making method ensures an improved safety performance of the rope Rotation

Our rotation-resistant wire rope contains several strands laid helically around an independent rope core. The lay direction of outer strands is opposite to that of the independent core so that the overall rope can be non-rotating. This series of rope mainly functions as a lifting tool in the crane. It also can be used in a rope take-up system that requires many times of rope winding. Bending Fatigue

Increasing the number of strands within a rope and wires in a strand can lead to an extended contact between the rope and the sheave groove or grooved cable drum, thereby reducing the stress acted on average rope. Through adding irregularly-shaped strand to the wire as well as rotary

8.end parts of fittingsa large selection of end fittings,including eye bolts,links,springs,hooks,thimble,clips,stops,ball ,ball shanks ,sleeve ,stamped eye,handles,etc

Etc. When designing a cable assembly, a number of factors need to be considered such as, work load, abrasion, cycle life, and flexibility, environment, cost, safety .etc. the larger the diameter ,the greater the work load capacity and the less flexible it will be.

WARNING :Breaking strength should never be considered the rope"s working load ,safety factor 5:1 ,Coating must be removed from installation area when attaching fittings

Zinc coated carbon steel offers some corrosion resistance. It remains ductile over long periods of working. Usually higher break strengths than stainless steels.

Public Placessubway, airports, stations, gas stations, toll stations, bookstores, parks, exhibition halls, stadiums, museums, convention centers, ticket agencies, HR market, lottery centers; Real Estate Property: Apartments, villas, offices, commercial buildings, model rooms, property brokers;

Do not use other than specified in the loading products.No more than the safe working load of the product.Don"t use coated wire rope.Do not apply paint or other coating.Shall not apply to the lubricant.Don"t use a lift.Keep the products clean

Manufactured in Calgary this cable is made by coating offshore aircraft cable with a tough and durable PVC coating. The colour is flat black to best fade into the background.

smaller sized cables, we find using an oversized thimble often makes the attachment of fittings easier. Below is a 1/8” standard, a 3/16 AN Zn, and a 1/8” AN Zn Thimble.

AN thimbles come in either cold-rolled steel (zinc plated) or stainless steel (natural finish). Fit cable diameters from 1/16” to 3/8” to meet the most demanding marine, aircraft or industrial requirements. AN Thimbles meet all Military Specifications.

Often generically referred to as Crosby clips and occasionally as bulldogs we offer both forged and malleable wire rope clips. Forged clips are required for use in overhead lifting. The malleable clips are recommended for non critical light duty applications such as guard rails, guy wires etc. The efficiency rating on the proper number of properly applied wire rope clips is 80% of the strength of the wire rope. We offer both offshore and Genuine Crosbie Wire Rope Clips. Fist Grips have a couple of advantages over Wire Rope clips in that they are impossible to apply incorrectly and they damage the rope less in situations where the clip will be removed.

Wire rope clips must be re tightened after applying load. In accordance with good rigging practice wire rope and its terminations should be regularly inspected.

Different Brand or trademark names for similar but very different products. When looking at a lifting sling from an aluminum tube’s point of view, it prefers supple, soft and nonabrasive slings. A round sling is the prefect choice rather than a steel sling. Round slings are made of many strands of polyester covered with a protective polyester sheath.

Unfortunately, polyester melts at approx. 250°C (~480°F). Research has shown that a 2k luminair-housing can reach temperatures of about 190°C (~370°F), with the truss-chord straight over it being almost 140°C (~280°F). Accidents have been reported of round slings being melted by spots, pyro or the heat of the rays, and as a result, trusses have fallen. When round slings are used, a safety backup must be applied such as a wire rope or chain sling.

So rather than have a backup steel sling why not make the sling out of steel but softer than a single cable. A steel round sling has a normal outside webbing for soft slings, but instead of the polyamide core, the steel round sling has a core made of many small steel cables, which makes it resistant to high temperatures. The steel wires within the steel round are as flexible as a normal soft sling, but have a much better fire resistance. The steel round can be used in circumstances where the normal soft slings are not allowed.

The outside webbing is black, including an identification label and a hidden inspection window to inspect the steel wires within the sling. The wire-rope core has better heat resistance than the truss itself.

Down Stage Right can supply most of your rope and cordage requirements from twill tape and black cotton tie line to large diameter manila and polyester ropes and braids. To make life very very confusing the synthetic fibre ropes are all available in either a 3 strand, solid braid, double braid or parallel core configuration in nylon, polyester or more exotic materials. Polyester ropes are available in a spun or non spun finish. Due to the huge number of different sizes, colours, materials and braid types combinations (and to simplify things) Down Stage Right Industries stocks several favourites that we have found the theatrical industry usually purchases. If you need a particular rope we are happy to bring in the particular configuration and colour that you want. Please call for details or recommendations for a particular product.

Twill tape is a flat twill-woven ribbon of cotton, linen, polyester, or wool. Used in attaching soft goods and electrical cables to pipes we offer both cotton and polyester twill in 100 yard rolls.

Used as a general purpose tie line for drops or cables it is offered in 1000 and 3000" spools. Available in cotton and polyester. Size 4, #4.5 or 1/8” and #5.

The primary advantage of sash cords are their handling characteristics and their knot holding ability. It does not have the strength or durability of double braids. Available in white as a cotton polyester blend or in black as spun polyester. Sash braid is generally a coarser cousin of solid braid.

Often mislabeled as hemp, manila is significantly stronger and is used in for hand lines in counterweight rigging and as general purpose spot line rope. We only carry #1 grade sea worthy manila. Manila has generally been replaced by synthetics in our industry

Working loads are guidelines only. Once put into service rope is continually deteriorating. Manila rope will deteriorate in storage even under ideal conditions.

Solid braid ropes are sometimes referred to as “sash cord” because this pattern was used to raise sash windows. It is formed by braiding 8 to 18 strands in a reasonably complicated pattern with all the strands rotating in the same direction on the braider. The individual stitches are oriented in the same direction as the rope. The center may contain a filler core. These ropes maintain their round shape well and therefore work exceptionally well in pulleys and sheaves. They tend to have high elongation and are generally less strong than other forms of construction, and are difficult to splice.

"Double braid" ropes, also referred to as "Marine Ropes" or "Yacht Braid" or “2 in 1” are perhaps the most well known braided rope on the market today. They are constructed of a hollow braided rope, which acts as a core inside another braided rope. The combination of the 2 ropes in 1 results in a rope with higher tensile strength than commonly found in twisted ropes. The inner rope and outer rope are generally designed to share the load fairly evenly. Double braid ropes have a torque free construction, and are easily spliced. However, caution must be exercised where double braid ropes are run over pulleys, through hardware or in any situation where the outer rope may slide along on the inner rope and bunch up. This condition, often called "milking", will cause dramatic loss of strength by causing the entire load to go onto the inner rope, because the sheath is bunched up and therefore not under the same tension as the inner rope. Polyester double braid ropes big advantage is that they do not have the same stretch as nylon. They can also be made with a soft “spun” covering giving a better hand feel. The elasticity of nylon ropes can absorb sudden shock loads that would break other ropes.

Manufactured by New England Ropes Stage Set X is a superior replacement for manila with a longer life, much higher strength and no slivers. This rope was specially developed as a replacement for manila hand lines in counterweight rigging and we find it to be Cadillac of the synthetic hand line ropes. Multiline II is a three stranded rope with the same ideals in mind. It is more economically priced and has slightly different handling characteristics.

PRODUCT DESCRIPTION: New England Ropes" Stage-Set X is the softest, strongest and most environmentally stable product available in the theatre industry for counterweight systems. It"s parallel core of polyester fibre contained within a helically wrapped polyester tape and covered by a braided polyester jacket, remains firm and round under all load conditions and resists crushing in rope locks.

Compliance to the above specifications is based upon testing according to the Cordage Institute Standard Testing Methods for Fiber Rope and/or ASTM D-4268 Standard Methods of Testing Fiber Ropes.

Tensile strengths - Are approximate average for new, unused ropes. To estimate the minimum tensile strength of a new rope, reduce the approximate average by 15% (Cordage Institute defines minimum tensile strength as two standard deviations below the average tensile strength of the rope).

Good resistance to most minerals / organics, acids, weak alkalis, bleaches and other oxidizing agents and most solvents. Polyester is generally considered to have a better overall resistance to acids or oxidizing agents.

Good resistance to the passage of electrical current. However in rope form, dirt, surface contaminants, water entrapment and the like can significantly affect dielectric properties. Extreme caution should be exercise any time a rope is in the proximity of live circuits.

No blanket working load recommendation can be made because it depends on the application and conditions of use, especially potential danger to personnel. It is recommended that the user establish working loads and safety factors based on professional and experienced assessments of risks. The working load is a guideline for the use of a rope in good condition for non-critical applications and should be reduced where life, limb, or valuable property is involved, or exceptional service such as shock, sustained loading, severe vibration, etc.

The Cordage Institute specifies that the Safe Working Load of a rope shall be determined by dividing the Minimum Tensile Strength by the Safety Factor. Safety factors range from 5 to 12 for non-critical uses, 15 for life lines.

PRODUCT DESCRIPTION: Multiline II is a 3-strand composite rope, its unique construction combines filament and staple/spun polyester wrapped around a polyolefin core (smaller than 1/2" diameter does not have polyolefin core). Multiline II feels and handles like manila, yet provides greater durability, higher strength, lighter weight, and a consistent supple feel over time.

Compliance to the above specifications is based upon testing according to the Cordage Institute Standard Testing Methods for Fiber Rope and/or ASTM D-4268 Standard Methods of Testing Fiber Ropes.

Tensile strengths - Are approximate average for new, unused ropes. To estimate the minimum tensile strength of a new rope, reduce the approximate average by 15% (Cordage Institute defines minimum tensile strength as two standard deviations below the average tensile strength of the rope).

Good resistance to most minerals / organics, acids, weak alkalis, bleaches and other oxidizing agents and most solvents. Polyester is soluble in 95% sulfuric acid or strong alkaline"s at boil. Polyolefin is soluble in concentrated chlorosulphonic and sulfuric acids.

Good resistance to the passage of electrical current. However in rope form, dirt, surface contaminants, water entrapment and the like can significantly affect dielectric properties. Extreme caution should be exercise any time a rope is in the proximity of live circuits.

No blanket working load recommendation can be made because it depends on the application and conditions of use, especially potential danger to personnel. It is recommended that the user establish working loads and safety factors based on professional and experienced assessments of risks. The working load is a guideline for the use of a rope in good condition for non-critical applications and should be reduced where life, limb, or valuable property is involved, or exceptional service such as shock, sustained loading, severe vibration, etc.

The Cordage Institute specifies that the Safe Working Load of a rope shall be determined by dividing the Minimum Tensile Strength by the Safety Factor. Safety factors range from 5 to 12 for non-critical uses, 15 for life lines.

Stainless steel wire ropes boast higher corrosion resistance to salt water than galvanized wire ropes, so they are the best choice of marine applications. Meanwhile, the bright appearance of galvanized wire ropes will dull over time, but stainless steel wire rope will maintain its bright and modern appearance for years. Therefore they are generally used in decoration for modern display and architectural purposes, such as railings, architectural cables, cable balustrades, handrails, etc.

The 304 material, as the most common type, is magnetic with excellent corrosion resistance and strength compared with galvanized steel wire ropes. But it still will corrode to some extent over year so it is not suitable for marine and food applications.

The 316 materials is the most corrosive resistant type and highly used in high corrosion environments and places with high salt spray. But the 316 material is about 10% less strength than 304 stainless steel.

Original equipment wire rope and replacement wire rope must be selected and installed in accordance with the requirements of this section. Selection of replacement wire rope must be in accordance with the recommendations of the wire rope manufacturer, the equipment manufacturer, or a qualified person.

Wire rope design criteria: Wire rope (other than rotation resistant rope) must comply with either Option (1) or Option (2) of this section, as follows:

Option (1). Wire rope must comply with section 5-1.7.1 of ASME B30.5-2004 (incorporated by reference, see § 1926.6) except that section"s paragraph (c) must not apply.

Option (2). Wire rope must be designed to have, in relation to the equipment"s rated capacity, a sufficient minimum breaking force and design factor so that compliance with the applicable inspection provisions in § 1926.1413 will be an effective means of preventing sudden rope failure.

Type I rotation resistant wire rope ("Type I"). Type I rotation resistant rope is stranded rope constructed to have little or no tendency to rotate or, if guided, transmits little or no torque. It has at least 15 outer strands and comprises an assembly of at least three layers of strands laid helically over a center in two operations. The direction of lay of the outer strands is opposite to that of the underlying layer.

Type II rotation resistant wire rope ("Type II"). Type II rotation resistant rope is stranded rope constructed to have significant resistance to rotation. It has at least 10 outer strands and comprises an assembly of two or more layers of strands laid helically over a center in two or three operations. The direction of lay of the outer strands is opposite to that of the underlying layer.

Type III rotation resistant wire rope ("Type III"). Type III rotation resistant rope is stranded rope constructed to have limited resistance to rotation. It has no more than nine outer strands, and comprises an assembly of two layers of strands laid helically over a center in two operations. The direction of lay of the outer strands is opposite to that of the underlying layer.

Type I must have an operating design factor of no less than 5, except where the wire rope manufacturer and the equipment manufacturer approves the design factor, in writing.

When Types II and III with an operating design factor of less than 5 are used (for non-duty cycle, non-repetitive lifts), the following requirements must be met for each lifting operation:

A qualified person must inspect the rope in accordance with § 1926.1413(a). The rope must be used only if the qualified person determines that there are no deficiencies constituting a hazard. In making this determination, more than one broken wire in any one rope lay must be considered a hazard.

Each lift made under § 1926.1414(e)(3) must be recorded in the monthly and annual inspection documents. Such prior uses must be considered by the qualified person in determining whether to use the rope again.

Rotation resistant ropes may be used as boom hoist reeving when load hoists are used as boom hoists for attachments such as luffing attachments or boom and mast attachment systems. Under these conditions, all of the following requirements must be met:

The requirements in ASME B30.5-2004 sections 5-1.3.2(a), (a)(2) through (a)(4), (b) and (d) (incorporated by reference, see § 1926.6) except that the minimum pitch diameter for sheaves used in multiple rope reeving is 18 times the nominal diameter of the rope used (instead of the value of 16 specified in section 5-1.3.2(d)).

The operating design factor for these ropes must be the total minimum breaking force of all parts of rope in the system divided by the load imposed on the rope system when supporting the static weights of the structure and the load within the equipment"s rated capacity.

Wire rope clips used in conjunction with wedge sockets must be attached to the unloaded dead end of the rope only, except that the use of devices specifically designed for dead-ending rope in a wedge socket is permitted.

Prior to cutting a wire rope, seizings must be placed on each side of the point to be cut. The length and number of seizings must be in accordance with the wire rope manufacturer"s instructions.

Made of multiple strands wound together, the steel Wire Rope is one of the most crucial components in a Crane. Each strand has a tensile strength ranging between 1470 N/mm2 and 2160N/mm2.As the load carrying rope used in the Hoisting Mechanism, it can be sent through different surface treatment to suit specific environmental condition.

Designed for higher breaking strength and better strength to weight ratio, our Crane Wire Rope is made of high-toughness steel wires that have been stretched to their tolerance limit prior to being stranded together to form a rope with optimum spacing between each strand.

Even if wire strands are tightly twisted, there still be spaces in places where the strand touches with each other. To improve the fill factor of the wire rope, we have added irregularly-shaped wire strand to the rope and sent it through rotary swaging process. Steel wires that are laid in a parallel pattern increase the cross section of the rope.

Special-purpose steel rope is commonly seen in various engineering projects. Via precision design and rigorous test, the rope usually can meet very high safety standards.