Wholesale price! API 5ct 3 1/2" N80 NUE tubing coupling/tubing collars

Feature:

1.Type:coupling

2.Material:J55, K55, N80-1,N80,L80,P110

3.Size:from 2-3/8" to 4-1/2"

4.Standard reference:API 5CT&5B

5.Placement:female

6.Technics:hot rolling

7.Surface treatment: Whole phosphating, or inside phosphating and outside coating

8.Packing: By carton, wooden case, wooden pallet, or by requirements of customers

Technical Parameter

Package information

Certification

Detailed Pictures

Production Process

Workshop photo

RFQ for your information

1. Q : are you a factory or a trade company?

A : Yes,we are a specilized petroleum machinery products factory for 12 years

2. Q:Where are your factory located in?how can i reach it?

A: our factory is located in PuYang City,HeNan province,you can take the High-speed

rail from Beijing or Shanghai , or by plane to Zhengzhou airport.

3. Q: do you have API 5CT certification or other certification?

A: we have API 5CT &API 11b certification ,and ISO 9001 quality control certification

4.Q:for the quality control,how do your factroy control?

A: Firstly,all our seamless tubes,such as J55,K55,N80,L80,P110 are from china biggest

seamless factory,so Tensile Strength & Yield Strength can be assured

B: Secondly,each procedure strictly controlled,and the threads are conntrolled by lathe

and import molding cutter.