TUBING COUPLINGS; SMLS; EUE &NUE COUPLINGS; OILFIELD TOOLS;COUPLING STOCK MATERIAL

Oil pipe/short joint thickening/pier thickening process:

After the oil pipe end is heated, it is sent to the thickening equipment for upsetting.

Make the tubing end plastically deformed (the inner diameter of the pipe end does not change, and the wall thickness of the pipe end and the effective length of the thick wall section are increased).

In order to achieve the purpose of thickening the pipe end.

The external thickening process is a complex composite process of upsetting, diameter expansion and extrusion.

The purpose of thickening is to enhance the strength of the threaded connection of the oil pipe, increase the service life of the threaded connection, avoid breakage at this place, and prolong the life of the oil pipe and prevent accidents!

Product Name: Tubing Coupling, Oil Tubing Coupling ,EUE Coupling ,NUE Coupling

Standards: API SPEC 5CT, API SEPC 5B, API-7

Material/Steel Grade: J/K55, N80, L80-1, 80SS, L80-3Cr, L80 13Cr, L80-9CR, Super 13Cr, P110, P110-13CR, TP110S, etc.

Specifications: OD-55.88mm-141.3mm (1.9''-4-1/2'')

Thread buckle type: no thickening (NUE), thickening (EUE), special clearance (SCC)

The types are divided into: common shorts are divided into ordinary shorts, double male shorts, and overall thickened shorts

Ordinary short connection: divided into flat type (NUE) oil pipe short connection and thickened (EUE) oil pipe short connection.

The processing is to directly process threads at both ends, and the thickened short connection is to pass through the thickening of the nozzle, the outer diameter of the nozzle becomes larger, the wall thickness is thickened, and then the thread is processed.

This in turn increases the strength and torque of the threads.

Double male short connection: one end of the standard short connection is a male thread, and the other end is a female buckle (coupling or direct processing), while the duplex short connection is a male thread at both ends, without a coupling or without a female buckle.

  SWS offers a range of premium API casing accessories and OCTG to meet the challenging demands of oilfield and E&P companys operatiing

world widely.

  To meet these demands, sws has established a manufacturing facilitu of 78000sq ft. This facility has modern CNC maching, fabrication and

procssing equipment, testing and inspection facilities, together with raw material and production storage.

  To satisfy our customer’s expections, sws offers advanced production facility, complete and systematic production, as well as groups of

management, design and manufacturing.

  SWS's main facility is located in a major industrial area, with convenient transportation and science industry around there.

  The demands of customer can be met rapidly anf concisely with the competitive advantage of technology, talent, raw material, together with

geography and transportation.

  SWS has partners all over the world to support our clients on global supply and support in anytime. 

  Qualification obtained: 

sws is committed to provide competitively advanced technical facility that has been designed, manufactured and tested to get the approval of

industry standard API, along with international systematic standards( API Q1, 14001, 18001)