API 3-1/2" NUE Tubing Couplings of Pipe Collar   

API 5CT, 5B Coupling

Material: API 5CT Seamless Steel Pipe

Usage: Well Drilling Machinery

Grade: J55, K55, N80-Q, L80-1, P110;

Size:2-3/8'-4-1/2"

Surface Treatment: Whole phosphating, or inside phosphating and outside coating
Packing: By carton, wooden case, wooden pallet, or by requirements of customers

Brand: KW

Color: white on surface and black inside thread

Supply Ability: 20000pcs per month

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And related spec of tubing couplingsgrade K55, J55, P110, N80Q, L80-1, type of buttress thread, long round thread, short round thread as follow for your reference as for your reference

About Us

Xi'an Kingwell Oilfield Machinery Co.,Ltd is a professional supplier for oilfield products according to the API standard. We exporting ALL KINDS OF OILFIELD MACHINERY AND TOOLS with super Quality and Competitive Price in CHINA.

With over 10 years developing, we were developed from the beginning drilling service to manufacture factory who produce OCTG, DST tools and Solid Control products.

KINGWELL have experienced team, stronger enough to meet any challenge, we do believe honest is the base of business and cooperation, our aim is to build solid relationship with any part of honest. kingwell can provide highly efficient services to its clients resulting in accurate and timely deliveries at the best prices.
is a professional supplier for oilfield products according to the API standard. We exporting ALL KINDS OF OILFIELD MACHINERY AND TOOLS with super Quality and Competitive Price in CHINA. 

Our tubing and casing couplings have exported to USA, Canada, Egypt, India and UEA , etc with 40 FCL contaniers per month.Now, with high quality and short supply and good service, our couplings has got good reputation home and abroad Here we got some prise as follows.

Our Tubing Couplings cover all API Standard scope from 2-3/8"-4-1/2with strickly inspection, which all the goods should be checked one by one before packing.   Euipped withthe world-class facilities and professional laboratory technicians, we pay more attention the quality of every products.

A well-established Quality System from Materials receipt to Products delivery ensures consistent quality at all levels of the activity. QMS Procedures & Measurements are tailored to establish high standards of Quality Assurance in the Operations. The Company maintains the 100% Traceability records as per API requirements&NACE MR 0175-2002 Standards and complies with all the legal, statutory and regulatory requirements.  









Any enquiry of above products or relative parts, Pls feel free contact back, and we will offer you a good price and show you our best service.