OCTG,OCTG pipe,OCTG steel pipe

Classify	Specifcation	Length	Material/Steel Grade	Specification
Common liquid Conveyance pipe	Ф114.3-Ф323.9X4.0-14.0	6-13.5m	Q215A、Q215B、 Q235A、Q235B、 Q295A、Q295B、 Q345A、Q345B	GB/T309-2001
			Grade A Grade B	ASTMA53/A53M-06
Petroleum line pipe	Ф114.3-Ф323.9X4.0-14.0	6-13.5m	L175、L210、L245、 L290、L320、L360、 L390、L415、L485、 A25、X42、X46、 X52、X60、X65	GB/T9711.1-1997
				API5L
Petroleum casingpipe	Ф139.7-Ф339.7X4.0-14.0	6-13.5m	H40、J55	API5CT
				SY/T5898-1994
Structure pipe	Ф114.3-Ф323.9X4.0-14.0	6-13.5m	Q235、Q295、Q345	GB/T6728-2002

Tolerances on dimensions
Standard	O D Tolerance		W T Toerances
API Spec 5L	D<60.3mm	+0.41mm,-0.8mm	+15%-12.5%
	≥60.3mm	±0.75%

Chemical composition(%)
Standard	Grade	C	Mn	P	S
Standard	Grade	Max	Max	Man	Max
API SPEC 5L	PSL1
	A25I	0.21	0.60	0.03	0.030
	A25II	0.21	0.60	0.045-0.08	0.80
	A	0.22	0.90	0.030	0.030
	B	0.28	1.20	0.030	0.030
	X42	0.28	1.30	0.030	0.030
	X46.X52.X56	0.28	1.40	0.030	0.030
	X60.X65.X70	0.28	1.40	0.030	0.030
	PSL2
	B	0.24	1.20	0.025	0.015
	X42	0.24	1.30	0.025	0.015
	X46.X52.X56	0.24	1.40	0.025	0.015
	X60.X65.X70.X80	0.24	1.40	0.025	0.015

OCTG steel pipe are mainly used in the drilling and transportation for oil or gas . It includs petroleum drill pipe, petroleum casing pipe and pumping pipe for oil. Petroleum drill pipes are mainly used in the connecting drill collar and drill in order to supply the power for well. Petroleum casing pipes are used for ensuring the process of drilling and the the normal operation after the completion of oil well,withing the supporting for well wall in and after the the process of drilling. Pumping pipe for oil are used for the transportation of oil and gas from underground to the ground.