Specifications

gb20 seamless steel pipe:
1)OD:35--370mm
2)WT:2--80mm
3)API 5L and API 5CT certificate
4) ISO certificate

gb20 seamless steel pipe

(1) Product Name: Seamless Carbon or Alloy Steel Pipe

(2) Brand: Zhongzheng

(3) Business type: manufacturer and trading company

(4) Specification:

Outside Diameter	Wall Thickness
33.4mm – 355.6mm (1'' - 14'')	3.38mm-35.71mm (SCH40-XXS)

(5) Material and Standard:

Item	Chinese standard (GB)	American standard (ASTM)	German standard
1	10#	A53-A	St37	DIN1626
		A106-A	St37-2	DIN17175
		A179-C	St35.8	DIN17175
2	20#	A53-B	St42-2	DIN1626
		A106-B	St45-8	DIN17175
		A178-C	St45-4	DIN1629
3	45#	A1045	CK45
4	16Mn	A210-C	St52.4	DIN1629
			St52	DIN1629
5	37Mn5	J55

 (6) Tolerate:

          Outside Diameter +1% / -1%

          Wall Thickness +12.5% / -10%

          Length 20mm

(7) Techniques: hot rolled or cold drawn.

(8) Packing: in bundles/ varnish paint outside/ with plastic caps on both ends

(9) Any need, welcome to contact with me without any hesitate.