Process：ERW and Seamless

Standard：API 5CT

Certificate：LTC, STC, BTC, PREMIUM CONNECTION.

OD：4 1/2’’ – 20’’ (114.3mm-508mm)

Wall thickness：0.205’’- 0.635’’

Length：R1, R2, R3

Grade：H-40, J55, K-55, N-80, C-75, L-80, C-90, T-95, Q-125

End：Beveled, Square cut. And pipe protection cap especially for casing and tubing.

API CASING COUPLINGS - BUTTRESS THREAD (BTC)
API Casing Couplings Buttress Thread	Casing Size OD (inches)	Coupling Size OD (inches)	Length (inches)	Weight per Coupling (lbs)	Palletized Carton Quantity	Palletized Carton Weight
	2004/1/2	5	8.875	10.11	196	2007
	5	5.563	9.125	12.99	144	2840
	2005/1/2	6.05	9.25	14.14	144	2061
	2006/5/8	7.39	9.625	24.46	92	2295
	7	7.656	10	23.22	80	2068
	2007/5/8	8.5	10.375	64.84	64	2221
	2008/5/8	9.625	10.625	45.94	48	2414
	2009/5/8	10.625	10.625	50.99	40	2256
	2010/3/4	11.75	10.625	56.68	36	2307
	2011/3/4	12.75	10.625	61.74	24	2179
	2013/3/8	14.375	10.625	69.95	20	1429
	16	17	10.625	87.56	16	-
	2018/5/8	20	10.625	138.03	8	-
	20	21	10.625	110.33	8	-