china pup joint coupling quotation

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OCTG Pup Joints is one kind of common accessories for connection with casing and tubing. Threaded pup joints are divided into male threaded ends, single male threaded and Female threaded. The size and material is the same as the casing or tubing.

China N80 Pup Joint Manufacturer Derbo Supplies N80 Pup Joint, Hot Rolled, 1.66 Inch, EUE 2.40lb/ft, Oiled, Painting Finish, for Oil & Gas Industries.

China J55, K55, N80, L80, P110 Pup Joint Factory Dervos Supplies J55, K55, N80, L80, P110 Pup Joint, 2 3/8 to 20IN, Length 0.61m, 0.91m, 1.22m, 1.83m.

China J55, K55, N80, L80, P110 Pup Joint Factory Dervos Supplies J55, K55, N80, L80, P110 Pup Joint, 2 3/8 to 20IN, Length 0.61m, 0.91m, 1.22m, 1.83m.

The pup joint is a commonly utilized fitting in industrial pipe connection. According to various connections, it can be normally divided into thread and flange types. The threaded type can be further categorized into two head external thread, single head external thread, and flat head external thread types. In addition, the item falls under tubing and casing types based upon various usages.

Compared with the tubing, it is simply different in length. We can produce a variety of flat end and external upset tubing pup joints with J, N, L, and other steel grades and different specifications.

1. Introduction of pup joint The pup joint is fixed length tubing or casing. The thread is EUE, NUE, NEW VAM. The Length is from 1feet to 10feet. 2. Specification 3. Property of material

Tianjin Soright is one of the largest api 5ct tubing/casing pup joints manufacturers and suppliers in China, who can offer you the free sample and the quotation consultation service. Welcome to buy the low price and high quality products made in China from us.

TianJin TianGang Special Petroleum Pipe Manufacture Co., Ltd (TianGang) is known as a professional petroleum pipe manufacture in China. Located in Jinnan development area, TianJin city, next ...

Adjustable Pup Joint Tubing API 5CT 4-1/2" P110 NUE End Type Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. TUBING ... Read More

L80 Pup Joint Tubing 4-1/2" , Oil Drilling Pipe Cold Rolled Processed Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. ... Read More

Seamless Pup Joint Tubing N80 Phosphoating Surface Treatment Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. TUBING ... Read More

Oil Field Perforated Pup Joint Red Green Color Paint K55 For Oil Transport Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole ... Read More

J55 Pup Joint Tubing Round Shape Thick Wall Non Secondary Condition Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. ... Read More

Plain End Integral Pup Joint Galvanized Treatment , P110 Oil Line Pipe Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. ... Read More

L80 Pup Joint Tubing Convenient Connection Durable Anti Rust Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. TUBING ... Read More

Customizable Npst Pup Joint Hot Rolled N80 Grade Low Carbon Steel Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. ... Read More

Threaded Pup Joint Tubing K55 , Oil Supply Pipe For Well Drilling Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. ... Read More

Industrial Crossover Pup Joints Anti Corrosion Petroleum Machinery Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools. ... Read More

API Coupling refers to the steel couplings that used in connecting casing pipe and tubing. Also known by OCTG coupling, it is usually manufactured in seamless type, material grade same with the pipe body (API 5CT K55/J55, N80, L80, P110 etc), same PSL or providing higher grades than requested. Same heat treatment also applicable, except there is an special requirements.

As we know steel pipe coupling is a short pipe or tube that with threads on both ends, used to connect pipelines. So It is a kind of pipe fittings that with threaded connection, the advantage is easy for pipeline maintenance or to replace the broken pipe.

With this purpose, API 5CT standard coupling plays an important feature in connecting casing and tubing line pipes. On the contrary, the biggest different with general steel pipe coupling is: API coupling manufacturing processes is more rigorous, requires a precisely control in the different processes as blew listed.

As we told, one of the important figure of API coupling, that it shall be made of seamless, another is the same grade as the casing or tubing pipe body, and these materials are used for manufacturing the blank coupling.

Coupling should be processed from coupling blanks or from coupling stock, including manufactured in hot forging. (Except Grade C110 and Q125 couplings shall not be in hot forging. These two grades material are typically different from other grades, so if you are purchasing couplings in this grades, should pay more attention to read regulations in API 5CT spec.)

In case purchase order did not specified heat treatment types, J55/K55 casing or tubing coupling shall be furnished either in as rolled, normalized, normalized and tempered, or quenched and tempered.

Mechanical properties of casing or tubing coupling shall comply to the clauses 7 and 10, covers test frequency, retest provision, etc. And this test records could be shown to third party inspector assigned from the client.

There are several types covered in API 5CT standard for coupling specifications, classified in regular couplings, special clearance couplings, combination couplings, reducing couplings, seal ring couplings, and special bevel tubing regular couplings.

Regular couplings diameters complied with API 5CT Tables C.32 to C.35 or Tables E.32 to E.35. Coupling bearing contact face inside and outside edges shall be rounded or broken, but shall not significantly reduce the width of the bearing face (dimension b), since less thickness will not be safe to support the pipe weight. The ends of couplings shall be faced exactly at right angles to the axis.

In case specified in the contract, special-clearance (reduced outside diameter Wc) couplings for buttress (BTC connection) casing and external upset (EUE connection) tubing shall be furnished. Unless otherwise specified, special-clearance external upset tubing couplings shall have a special bevel on both ends. The inside and outside edges of the bearing face shall be rounded or beveled. The ends (or root face when beveled) of couplings shall be faced at right angles to the axis.

Special-clearance coupling dimensions and tolerances shall comply to as given in Tables C.33 and C.35 or Tables E.33 and E.35 and as shown on Figures D.3 and D.5. Color identification see clause 11.

Combination couplings with different types of thread of the same specified size shall be furnished when specified on the contract. The minimum length and minimum OD of this coupling shall be sufficient to work with the specified size specified threads.

on the two ends. Same with combination coupling, minimum length and minimum diameter of reducing couplings shall be sufficient to support the specified size and threads.

Sealing-ring couplings conforming to the requirements shall be furnished when specified in the PO. Grooves may be cut before or after threading at manufacture’s option. Grooves and threads shall be free of fins, wickers and ribbons that are loose or can become loose and fold into the thread dorm. Couplings shall be inspected after final machining of the groove.

Reducing coupling are used to connect two pipes of different diameter with the same or different types of thread on the two ends, and shall be furnished when specified on the agreements. The minimum length and minimum diameter of reducing couplings shall be sufficient to accommodate the specified size and type of threads.

There are couplings for casing and couplings for tubing, the function is the same that to connect the pipe each other. On the other hand, still there are some differences between the two.

Normally tubing coupling OD maximum is 4 1/2”, as the tubing pipe is applied for the drilling activities (Inside the tubing is the sucker rod to drill/pump the oil), couplings type is more various and rigorous than casing, mostly used is thicken type upset coupling (Internal upset and external upset), for short is EUE coupling, it is the most favorable in tubing connections. Tubing with EU end (EUE) coupling connection also called UPTBG. Because of the end of the tubing is thickened (upset), the connecting stress is better than buttress coupling.

The oil tubing coupling can solve the problem of fatigue fracture in the existing coupling due to stress concentration. Oil tubing end is connected to the inside wall of the coupling in a tapered thread. The coupling body end and oil tubing are connected with same thread pitch flat thread. The coupling is not easy to produce fatigue fracture, and has good connection effect. It can prevent the accident of oil well pipe string break effectively.

Casing coupling is for the dimensions more than 4 1/2 inch. Differently than tubing coupling is, casing coupling normally does not need to be thickened (Non-upset), which means no upset casing coupling, so it has following types:

The oil casing coupling is a necessary piece used to connect the two casing. The coupling manufacturing method is the same as seamless pipe. The steel pipe ends with internal thread to connect with the upper and lower casing. In order to ensure the joint tightness, the precision of screw thread is strictly required.

API Threads is for the threads manufactured and inspected under API 5B. Couplings shall not be expanded to provide required threads taper under API specifications.

(NOTE Couplings with API threads may not have a leak resistance as high as the internal yield pressure of the pipe body, due to inadequate bearing pressure between the coupling and pin.)

Premium couplings and premium threads are the patent product that only with manufacturer authorization it can be produced or sold. Below are common brands or models for the premium connections.

API casing and tubing coupling dimension ranges from OD 1.05 inch to 20 inch (26.7 mm to 508 mm), wall thickness normally ranges from 0.16 inch to 1 inch (4.2 mm to 22 mm).

For Group 1, 2 and 3, Unless specified in the purchase agreement, coupling dimensions and tolerances shall be complied to API 5CT table C.32 to C.35 or tables E.32 to E.35.

For Group 4: Not only internal machining could be done to Coupling, external machining also could be done to. Except API couplings and threads shall comply to C.32 and C.33, or E.32 and E.33, in case other connections couplings or threads (Premium connection), couplings sizes shall be specified in the agreement.

According to API 5CT specification, the internal and external surface of coupling shall not have folding, cracks, separation, scaling and other defects.

Tests for making couplings is similar with the casing and tubing, which includes: Tensile test, flattening test, hydrostatic pressure test, sulfide stress corrosion cracking test, grain size determination, transverse impact test and hardness test.

Octal supplies API couplings for casing and tubing connections, feel free to contact us for any of the request refer to the API or premium connections.

One is a short Drill Pipe used to adjust the length of the Drill String; The other one OCTG Pup Joint is a pipe of non-standard length, which is used to adjust the length of tubular strings to its exact requirement.

Vigor can manufacture the Tubing Pup Joints by different technology - Upsetting and Machining process. if you have a special requirement on the Pup Joint production process, please just specify.

If you are looking for a competitive, high quality and fast delivery oilfield pup joint in stock, or if you are planning to buy pup joint API from one of the leading casing and tubing pup joint manufacturers, API 5CT pup joint in stock, l8013cr pup joint, nue/nue tubing pup joint manufacturers and suppliers China, please feel free to contact VIGOR.Details  of  API  Spec.  5CT  Oil  Tubing  Pup  Joint

We"re well-known as one of the leading pup joint manufacturers and suppliers in China. Our factory offers high quality pup joint made in China with competitive price. Welcome to buy. Contact us for quotation and discount inforamtion. API 5L ERW Steel Pipe, Oil Country Tubular Goods, API 5L LSAW Welded Pipe