carbon steel pipe fitting full coupling

Our company, was founded in1999, with the location of the Intersection of 106 National High way and Jintian Road, East

 Industries Areas of Puyang, Henan, China. We have more than14 years of experience of producing, 

developing and selling oil pipes and their accessories, steel pipe fittings and other downwell tools,like pup 

joints, tool joins,and other down well tools that designed and developed by our own such as: High efficient 

cyclone separator, Tubing centralizer, Spiralflow sand setting device and so on. We have the ISO 9001Quality Control Certificate, API - 5CT Certificate with the NO. 5CT0837and API - 7 certificate with the NO. 7-0649.

We are the regular suppliers of Petrochina and Sinopec. From 2009, our market have expanded abroad out of China. Our products have already been used in USA, Brazil,Venezuela, India, Kazakhstan, Indonesia and so on.

We hope to cooperate with you by our high quality products and excellent service.

All our products are produced and processed according to API SPEC5B5CT, with the materials of steel grade including 

J55,K55,N80,N801, N80Q,L80,P110 and so on. The couplings have five types, namely BC (buttress) ,LC(long thread),SC(short thread),NU(nonupset) and EU(external upset). By numerically controlled lathe and import molding cutter, the processing of thread can be finished in one time,which ensures its commonality and interchange ability. We have complete testing abilities,  adopting a whole set of single testing apparatus of thread,including tape,pitch,tooth depth,profile and so on.Our products 

have already passed the identification of the Quality Testing and Inspection Centre of Oil Pipe of CNPC

(China National Petroleum Corperation)

Below are the sizes of the API 5CT Couplings  that we offer.

API TUBING COUPLINGS - EXTERNAL UPSET END (EUE)

API EUE Tubing Couplings	Casing Size OD (inches)	Coupling Size OD (inches)	Threads per inch	Length (inches)	Weight per Coupling (lbs)	Palletized Carton Quantity	Palletized Carton Weight
	1.90	2.500	10 Round	-	1.85	-	-
	2-3/8	3.063	8 Round	4.875	3.42	1,444	3942
	2-7/8	3.668	8 Round	5.500	5.29	792	4220
	3-1/2	4.500	8 Round	5.750	9.02	448	3860
	4	5.000	8 Round	-	10.62	392	-
	4-1/2	5.563	8 Round	6.500	13.31	252	3456

  API TUBING COUPLINGS - NON UPSET END (NUE)

API Non-Upset Tubing Couplings	Casing Size OD (inches)	Coupling Size OD (inches)	Threads per inch	Length (inches)	Weight per Coupling (lbs)	Palletized Carton Quantity	Palletized Carton Weight
	1.90	2.200	10 Round	3.750	1.85	-	-
	2-3/8	2.875	10 Round	4.500	2.82	1,512	4264
	2-7/8	3.500	10 Round	5.500	5.15	800	4120
	3-1/2	4.250	10 Round	5.625	8.17	502	4101
	4	4.75	8 Round	5.75	9.57	392	-
	4-1/2	5.200	8 Round	6.500	10.76	252	2712

3.API 5CT-0837 certificate

4.Business card