Seamless API Oil Casing Pipe (4-1/2"~20")

Date: 03 Sep 2010
1. Size: 4-1/2"~20"
Steel grade: J55, K55, N80, L80, P110, Q125
Thread Type: LTC, STC, BC
Production Standard: API SPEC 5CT\API SPEC 5B
Quality Control: ISO9001

2. Quality control
We have implemented stringent quality control tests system to inspect raw materials and examine products in every stage of the production:
*Size and surface inspection
*Non-destructive test
*Thread inspection
*Hydrostatic test
*Drifting test
*Physical and chemical analysis
*Hardness and pressure test.
Contact information:
Shandong Dongbao Steel Pipe Co., Ltd
North of the Crossway of Dongwaihuan Road and Luofu Street,Shouguang, China[262704]
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