Manufacturing Q235 Cold Rolled Black Annealed Steel Pipe Hollow Steel Section Square Tube

Product Detail

Standard:		ASTM, bs, GB, API, ASTM A53-2007, BS 1387, GB/T3901, API 5L
Grade:		Q195-Q345, ST35-ST52, A53-A369, Q235, Q195, St37-2, A53(A,B), A106(B,C)
Thickness:		0.5 - 20 mm
Outer Diameter:		8 - 630 mm
Place of Origin:		Shanghai, China
Application:		Structure Pipe
Surface Treatment:		oiling/paint
Special Pipe:		Thick Wall Pipe
Packing:		customized packing for GI round steel pipe
Production technology:		ERW
Round Pipe				Rectangular Pipe		Square Pipe
Speciaification	Outer diameter		Wall thickness range	Speciaification	Wall thickness range	Speciaification	Wall thickness range
1/2''	20		0.8-2.2	20x40	0.8-2.0	16x16	0.8-1.5
3/4''	25		0.8-2.2	25x50	0.8-2.0	19x19	0.8-2.0
	25.4		0.8-2.2	30x40	0.8-2.0	20x20	0.8-2.0
1''	32		0.8-2.2	30x50	0.8-2.0	25x25	0.8-2.0
	38		1.0-2.3	35x55	0.8-2.0	30x30	0.8-2.0
1 1/4''	40		1.0-2.3	37x57	0.8-2.0	32x32	0.8-2.0
	42		1.0-2.3	40x60	0.8-2.0	35x35	0.8-2.0
1 1/2''	47		1.0-2.3	37x77	0.9-2.0	38x38	0.8-2.0
	48		1.0-2.3	25x75	1.0-2.2	40x40	0.8-2.0
2''	59		1.0-2.3	40x80	1.0-2.2	50x50	0.8-2.0
	60.3		1.0-2.3	50x100	1.0-2.2	60x60	1.0-2.2
2 1/2''	75		1.0-2.3	50x75	1.0-2.2	75x75	1.0-2.2
3''	87		1.0-2.3	38x75	1.0-2.2	80x80	1.0-2.2
4''	113		1.0-2.3	50x150	1.3-2.2	100x100	1.2-2.2