Shandong Zhongzheng Steel Pipe Manufacturing Co. , Ltd, Our company is located at the west of Shandong province, It is one of the largest pipe production bases in China , Our main product is seamless steel pipe. Our company has had ISO9001: 2000 certification and the American Petroleum Institute (API) certification.

Here are the detail instructions of our products:

(1) Produce Name: Seamless Steel Pipe

(2) Brand: Zhongzheng, OEM, Blank

(3) Specification: OD 21. 3mm - 355. 6mm ( 1/ 2'' - 14'')

(4) Standard:

ASTM A106 GR B , ASTM A53 GR B
SAE1020 SAE1045
JIS G4051 S 20C JIS G4051 S 45C
JIS G3454 STPG370 JIS 3454 STPG42
DIN ST 45- 8 DIN ST 52

(5) Technics: Cold drawn and hot rolled

(6) Packing: Bundle packing

Paint varnish coating on the pipe

Plastic covers at ends.

(7) Tolerate

OD +1% / - 1%

Length: + / - 2. 0%

Thickness +12. 5% / - 10%

The Max length is 13M .

Please feel free to let us know if you have any ...[More]on or need.