We are supplier(email:lv-xxxxx) to offer the below item::steel tube,black steel, seamless, BF, API-5L. Grade B,please contact me if you ask for these products:086-13817950874,E-mail:lv-xxxxx,hope coorperate successfully! ...

We,Zhejiang Ningsheng Steelpipe Co.,Ltd. is a professional manufacture of SAWL(submerged arc weld Longitudinal) steel pipe by JCOE forming based in Ningbo,China. Our company shortly presentation as following: 1), Manufacture standard: API.5L PSL1 and ...