wire rope ferrule installation made in china

cable ferrules: Aluminum wire rope ferrule is made of aluminum material, fabricated by squeezing and machining, can be easily attached to wire rope directly by ferrule crimping tools. Hilifting can supply Din 3093 aluminum cable ferrules, conform to DIN 3093, also known as EN 13411-3 and oval aluminum ferrules wire rope meets the requirements of the US. The oval type ferrule is used to make an eye on the end of a wire rope sling or steel cable, while double wire ferrule makes a loop to supply a strong connection between two strands of wire rope.

Copper ferrule: Copper ferrules, aka copper sleeves, brass ferrules, they are made from brass, are a very economical wire rope ferrule connectors, can provide a strong joint in a wire rope assembly.

Ferrule stop: Ferrule stop is also a kind of wire rope ferrule, but it is a smaller wire rope ferrule, primarily used to keep one of the wire rope cable end from passing through other groove materials.

Determine the amount of wire rope needed for the project at hand. Include extra length for the intended application of the ferrule and stop. More rope is usually required for a side-by-side splice than for a small end loop.

Cut the wire rope to the correct size using a cable cutter or hacksaw. Use a sharp, fine hacksaw blade to make sure all cuts are clean. Keep the ends of the rope as compact as possible.

Slide the required number of ferrules onto the wire rope. For a splice, place the ferrules in a row with the ends of the two ropes passing through them in opposite directions. For a loop, pass the end of the rope back through the remaining openings in the ferrules, forming the appropriately sized loop.

Arrange the assembly carefully for swaging; once made, the connection is permanent. Leave the required amount of space between ferrules, as well as enough rope protruding from the last ferrule for the end stops. Place a stop on each of the cut ends of the wire rope to prevent the individual wires of the rope from unraveling.

Begin assembly with an end stop. Place the fitting between the jaws of the swaging tool and compress it firmly onto the wire rope. Swaging is the act of permanently attaching sleeves and fittings to wire rope. The swaging tool is a cold metal press that allows you to crimp ferrules and other attachments onto the cable. One swage, or crimp, is usually sufficient for smaller fittings.

Swage the ferrules by starting at one end and compressing the oval-shaped fitting sideways between the jaws. Use enough force to create a deep indentation. Ferrules require two or more of these compressions per fitting depending on the application.

aluminum cooper ferrule JIS type aluminum cooper ferrule & crimps Specifications: Commodity name aluminum cooper ferrule Origin China mainland Material aluminum Surface treatment oxidize Process extrude Size From 1mm inch to 32mm M.O. Delivery time 10-20 days after order confirmation Payment term T/T, L/C, Western Union Business type Manufacturer, trading ISO9001 , CE Advantage 1. Over 30 years experience of manufacturing and exporting 2. Professional service 3.Competitive price Notes Special specifications and marks can be made according to customers requirements; Different function, size and shape available. Main products Rigging hardware such as Turnbuckle, shackles, Link Chain, Hooks, Aluminum sleeve, Thimble Product show Size Service Professional team work with you in China market Translate and interpret for you keep record take picture and prepare the full lists All-round service and prompt reply Delivery on time Booking container and arranging the shipment Making shipping documents Contact

Of course ,we have to know your application firstly and a number of factors have to be considered, such as work load, safety abrasion, environment ,cycle life, flexibility, , cost, When we design the steel wire cable assembly.

DIN3039 aluminium wire rope ferrule are manufactured according to EN13411-3 from 2.5mm to 60mm. For safety in fabrication and application, our ferrules are made of strictly seamless material corresponding to the requirements of DIN3039. It can improve the quality of pressed wire rope products. And it is widely used in wire rope field according to it cheap price and high cost performance.

Wire rope is often used in slings because of its strength, durability, abrasion resistance and ability to conform to the shape of the loads on which it is used. In addition, wire rope slings are able to lift hot materials.

Wire rope used in slings can be made of ropes with either Independent Wire Rope Core (IWRC) or a fiber-core. It should be noted that a sling manufactured with a fiber-core is usually more flexible but is less resistant to environmental damage. Conversely, a core that is made of a wire rope strand tends to have greater strength and is more resistant to heat damage.

Wire rope may be manufactured using different rope lays. The lay of a wire rope describes the direction the wires and strands are twisted during the construction of the rope. Most wire rope is right lay, regular lay. This type of rope has the widest range of applications. Wire rope slings may be made of other wire rope lays at the recommendation of the sling manufacturer or a qualified person.

Wire rope slings are made from various grades of wire rope, but the most common grades in use are Extra Improved Plow Steel (EIPS) and Extra Extra Improved Plow Steel (EEIPS). These wire ropes are manufactured and tested in accordance with ASTM guidelines. If other grades of wire rope are used, use them in accordance with the manufacturer"s recommendations and guidance.

When selecting a wire rope sling to give the best service, consider four characteristics: strength, ability to bend without distortion, ability to withstand abrasive wear, and ability to withstand abuse.

Rated loads (capacities) for single-leg vertical, choker, basket hitches, and two-, three-, and four-leg bridle slings for specific grades of wire rope slings are as shown in Tables 7 through 15.

Ensure that slings made of rope with 6×19 and 6x37 classifications and cable slings have a minimum clear length of rope 10 times the component rope diameter between splices, sleeves, or end fittings unless approved by a qualified person,

Ensure that braided slings have a minimum clear length of rope 40 times the component rope diameter between the loops or end fittings unless approved by a qualified person,

Do not use wire rope clips to fabricate wire rope slings, except where the application precludes the use of prefabricated slings and where the sling is designed for the specific application by a qualified person,

Ensure that wire rope slings have suitable characteristics for the type of load, hitch, and environment in which they will be used and that they are not used with loads in excess of the rated load capacities described in the appropriate tables. When D/d ratios (Fig. 4) are smaller than those listed in the tables, consult the sling manufacturer. Follow other safe operating practices, including:

When D/d ratios (see Fig. 6) smaller than those cited in the tables are necessary, ensure that the rated load of the sling is decreased. Consult the sling manufacturer for specific data or refer to the WRTB (Wire Rope Technical Board) Wire Rope Sling Users Manual, and

Before initial use, ensure that all new swaged-socket, poured-socket, turnback-eye, mechanical joint grommets, and endless wire rope slings are proof tested by the sling manufacturer or a qualified person.

Permanently remove from service fiber-core wire rope slings of any grade if they are exposed to temperatures in excess of 180 degrees F (82 degrees C).

Follow the recommendations of the sling manufacturer when you use metallic-core wire rope slings of any grade at temperatures above 400 degrees F (204 degrees C) or below minus 40 degrees F (minus 40 degrees C).

Whether you work as an electrical technician, handyman, or a plumber, you know the importance of having the right set of tools by your side. Now there have sure been numerous times when you need a tool adequate for transform metal sleeves into the desired shape through pressure? It is the wire rope crimping tool that has saved the day all those times. As one of the essential tools on the market, it doesn"t come as a surprise that there are a variety of different models. Hence, making the right decision is a bit harder, but as long as you know the critical features and basic info on a good quality crimping tool, you shouldn"t have a problem.

What you should know is that while there are both budget-friendly and high-end models, our suggestion is not to go for wire rope tools that are below $50 – these are versatile and more durable, and you put trust in your tool kit. Without further ado, let"s dive in and learn more about

Wire rope is a common material used when a project needs better support. This means you need proper fastening techniques, and this often means installing a ferrule. This tool is used to swage the rope, which is one way of crimping and bending a material into the desired shape.

A wire rope crimper is a crimping tool that craftsmen and workers in the metalworking field use to shape wire ropes. Usually made of hardened steel alloys they can be designed to handle specific ferrules, sleeve, and fittings. The wire rope crimpers are widely used in railing and DIY projects.

This long handle wire rope crimper is crafted with high-quality steel jaws that make for a clean and tight compression when crimping. Depending on the size you get, you will have 5 crimping sizes available to you:

Much like the previous one and any high-quality tool of this type, it can work well with stainless steel sleeves, along with stop sleeves on wire ropes. It is a well-crafted tool being constructed of high-grade carbon that has been polished to create a high-performance jaw that offers outstanding crimp capability and durability to boot. You will have 4 crimping sizes available to you:

This model is a pneumatic built crimping tool that will allow for heavier duty crimping needs. It is good to use on multiple sleeves, ferrules, and fittings. It is well built with high-grade materials that will enhance its overall durability and lifespan.

Sleeves are important as they are required to make loops at the end of the wire ropes. They come in a number of different material choices, with the cheapest and most common kind being aluminum. If you prefer using copper sleeves, they are available in plain or with zinc or tin plating. They are also available in stainless steel, but this is usually upon request.

Aluminum duplex sleeves are metal pieces that are extruded from high-quality aluminum and treated with heat to prepare them for cold forming, These pieces of swaging kit are the little pieces used to thread the wire or rope through before crimping. These pieces hold the rope in place, giving the metalwork more security.

These are fittings that are used when swaging with wooden materials. Often used to prevent the wire rope from chipping away at the softwood of the already drilled hole. These can also be used to make a drilled hole look more presentable and are good with hand swaging tasks.

These rigging and crimping accessories are sleeves used to hold the wire in place after crimping. They look like small double-barrel shotgun barrels, and that is why they are called such. They can come in many different materials from copper to aluminum and steel. Some even try to help with aesthetics by offering an anodized option as well.

Another version of a double-barrel sleeve this model is easy to use and doesn"t take much effort to get in place. They are intended to hold the wire rope or cable in place by locking both sides firmly in place. This is done by crimping both ends. Aluminum is an excellent choice as it is good with high humidity and salt environments, which means less chance of corrosion.

This is determined by how often will you be using that hand swagger tool or wire rope machine. If you need it no more than a few times a year, we recommend you invest in a multi-purpose hand crimper that is perfect for small repair shops and DIY. It is more affordable and still provides excellent performance. On the other hand, if you will be dealing with crimper tools regularly, you should invest in a pneumatic or automatic model that is easier to use and provides excellent long-term performance.

At the end of the day, it all comes down to what Is your profession and do you need a set of wire rope tools. In our opinion, getting yourself a set of crimpers and a hand swagger tool or even a pneumatic machine is an excellent investment if you are dealing with sleeves, railing fittings, daily. So what are you waiting for? Head out and make the best decision for your needs.

3M then draws the preform, via a drawing tower, into an extremely thin optical glass fiber. The resulting diameter of the optical fiber is 0.004 inches. The drawing also melds the core and glass sleeve into one integrated product, giving the optical fibers required optical properties. 3M refers to this optical fiber as “glass, glass, polymer,” or “GGP”. 3M owns a patent, in the U.S. and in several other countries, on the GGP process.

3M purchases a ceramic ferrule in Japan. This ferrule, a hollow cylinder, is used to align the ends of the optical fibers as the fibers are inserted into the connectors. The hollow center of the ferrule contains one channel that is designed to fit the optical fiber and to align the fiber ends, enabling light to pass through the connection.

In China, the ceramic ferrule, the metal ring, and the plastic parts are assembled into a connector for the ends of the cable assemblies. The fiber optic cable is also cut-to-length and assembled with the connectors. Specifically, the steps involved in the assembly process are as follows:

3M purchases a Japanese made ceramic ferrule which it provides to the assembler. This ferrule is a hollow cylinder, used to align the ends of the optical fibers as the fibers are inserted into the connectors. The hollow center of the ferrule contains one channel that is highly engineered to fit the optical fibers exactly and to provide a precise alignment of the optical fiber ends to minimize the loss of light in the connection.

Customs held that, as the optical properties are imparted at the preform stage of production, the “essence” or character of the preform does not derive from the cane, but from the added cladding and its interaction with the core (cane). Therefore, we found that the production of the fiber preform resulted in a substantial transformation of the imported cane.

In HRL 561392 dated June 21, 1999, Customs considered the country of origin marking requirements of an insulated electric conductor which is an electrical cable with pin connectors at each end used to connect computers to printers or other peripheral devices. The cable and connectors were made in Taiwan. In China, the cable was cut to length and connectors were attached to the cable. Customs held that the cutting of the cable to length and assembly of the cable to the connectors in China did not result in a substantial transformation. In HRL 560214 dated September 3, 1997, Customs held that where wire rope cable was cut to length, sliding hooks were put on the rope, and end ferrules were swaged on in the U.S., the wire rope cable was not substantially transformed. Customs concluded that the wire rope maintained its character and did not lose its identity and become an integral part of a new article when attached with the hardware. In HRL 555774 dated December 10, 1990, Customs held that Japanese wire cut to length and electrical connectors crimped onto the ends of the wire was not a substantial transformation.

In the case of the FIP cable assembly, a Japanese-origin ceramic ferrule and fiber optic cable (purchased from an unrelated company in the U.S.), metal ring (purchased in the U.S.), and plastic parts (purchased in the U.S. or self-produced by 3M in the U.S.) are used during the assembly operation in China. First, the connectors are assembled using the ferrule, adhesive, plastic covers, and a metal ring. The ferrule gives the connector its form and function. The connectors are then attached to each end of the fiber optic cable. For purposes of this ruling, we are assuming that those components said to be purchased in the U.S. for use in making the FIP cable assembly are of U.S. origin.

In your submission, you state that the assembly operation for the FIP cable assembly is substantially similar to that described above for the GGP patch cord. You mention that the only major difference is that the FIP connectors include the Japanese-origin ferrule, which provides the structure and the enclosure for the cable at the point of connectivity. According to your submission, the ceramic ferrule is precisely designed to allow the joining of hair-thin fiber optic cables. The other parts of the connector are simply a means of affixing the ferrule in place. You assert that the assembly operation performed in China does not result in a substantial transformation of either the ferrule or the fiber optic cable. Therefore, you contend that the country of origin of the imported FIP cable assembly is the U.S. as the fiber optic cable imparts the essential character to the cable assembly or, alternatively, that the country of origin of the fiber optic portion of the assembly is the U.S. and the origin of the connector portion is Japan.

Similarly, in the instant case, we find that neither the U.S.-origin fiber optic cable nor the Japanese-origin ferrule undergoes a substantial transformation in China as a result of the assembly operations performed there to create the FIP cable assemblies. These are considered simple assembly operations involving only a small number of components. In considering the last country in which the FIP cable assembly underwent a substantial transformation, it is our opinion that the cable assembly’s characteristics are primarily imparted at the time that the fiber optic cable is manufactured in the U.S. The fibers making up the cable serve as the transmission medium through which light signals travel. Therefore, the country of origin of the imported FIP cable assemblies is the U.S.

In your submission, you state that the assembly operation for the ST MM Epoxy Connector is substantially similar to that described above for the FIP cable assembly connector. Based on the reasoning cited above and as found in HRL 556020, it is our opinion that the assembly is relatively simple and only involves a small number of components. Therefore, in considering the last country in which the connectors underwent a substantial transformation, we believe that the connector’s characteristics are primarily imparted by the ferrule which provides the structure and enclosure for the fiber optical cable at the point of connectivity. Therefore, the country of origin of the MM Epoxy Connector is Japan.

Based on the facts presented, the assembly of the ST MM epoxy connector in China does not result in a substantial transformation. Therefore, as the very essence of the connector is imparted by the ferrule, the connector is a product of Japan for government procurement purposes.

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A number of us have similar 3D printers, so the comments for this article were understandably lively, but one comment stood out by listing a number of best practices for wiring, including the use of ferrules. In particular, many 3D printers connect the heated bed, which draws a lot of current, with screw terminals to the motherboard. While not the cause of the fire in the original post, melted terminal blocks are a common complaint with many DIY 3D printer kits, and one reason is that simply jamming thick stranded wire into a screw terminal and hoping for the best can result in increased resistance, and heat, at the joint. In such situations, the absolutely right thing to do is to crimp on a ferrule. So let’s talk about that.

So what is a ferrule anyway? In general, any kind of band or clamp that’s used to attach, reinforce, or secure objects to each other. That’s a broad definition that covers everything from the aglets applied to shoelace ends to prevent unraveling to the stout metal clamps used to connect wire ropes together. But in the world of electrical wiring, ferrules have a more specific definition, and very different purposes than ferrules used for purely mechanical applications.

An electrical wiring ferrule is a soft metal tube that is crimped onto the end of a stranded wire to improve the wire’s connection characteristics. Most ferrules are made of copper, which is usually plated with tin. The ferrule is sized for a specific gauge of wire, both in terms of its diameter and its length. A ferrule is not just a simple cylinder, though — it has a lip or flare formed into one end that serves to collect and consolidate the individual strands of the wire as they are inserted into the ferruule.

The flare in most ferrules is not immediately apparent because it’s usually encased in a conical plastic cable entry sleeve. This sleeve acts as a transition between the insulation of the wire and the ferrule itself, and also serves to corral all those loose strands into the lumen of the ferrule. Unlike in more traditional crimp connections, the plastic sleeve of a ferrule is not compressed during installation. It stays intact around the insulation, and provides some measure of strain relief after installation by moving the bend radius of the wire away from the end of the insulation. Most ferrule sleeves are color coded for wire size in the DIN 46228 standard, which confusingly has two different codes, French and German, for the same cross-sectional area in square millimeters.

If it sounds like ferrules are more a European thing than an American one, that’s with good reason. In order to get CE certification, electrical equipment must terminate stranded wire entering a screw or spring terminal with ferrules. There’s no such regulation in the US, and so it’s not common to see ferrules used in American equipment. But ferrules have specific advantages that are hard to deny, and their adoption appears to be spreading because they make good engineering sense.

To understand the principle, clip a small piece of insulated stranded wire of any gauge. Stranded wire is flexible, which is one of the reasons it’s used rather than solid wire in mobile applications and where vibration can occur. But it’s still somewhat stiff thanks in part to the insulation, which wraps the strands of the conductor, keeps them all in intimate contact, and maintains the twist, or lay, of the separate strands. Now strip off a bit of insulation from one end. You’ll notice that in most cases, the lay of the strands is at least partially disturbed — they untwist a little. Strip off more insulation and the strands get more and more separated. Take off all the insulation and the conductor will lose all structural integrity, falling into individual strands.

There’s more to a ferruled connection than reduced resistance, though. Like other crimped connections, the strands inside a properly applied ferrule undergo tremendous pressure, in the process stretching axially and deforming radially. The stretching action tends to disrupt and displace surface oxidation on the strands, while the radial compression tends to remove the air spaces between the strands. These tend to make the crimped connection better at resisting oxidation than uncrimped wire, increasing the longevity of the connection.

So are ferrules the way to go for the home gamer? On the whole, I’d say yes. Ferrules have obvious advantages over plain stranded wire, and in high-current applications, I would insist on using them with screw terminals or anywhere that the strain relief into the shielding is helpful. Plus, they lend a clean, professional look to a project, so even if the application is non-critical, I tend to include them on my stranded wire connections. It’s not without its cost to tool up for ferrules, of course, but at $30 for a kit with an assortment of ferrules and a proper ratcheting crimp tool, it’s not too bad.

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.

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.

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 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 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.