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API 5L Grade.B Steel Pipe Line,Seamless Steel Pipe时间:2019-11-02 Standard: API SPEC 5L Type: PSL1, PSL2 Material: carbon steel X42, X52, X60, L415, L485, L555, L6 Contact:Jose liu Email:jose@dlpoctg.com Skype:jose@dlpoctg.com Tel:+86-18722585559 WeChat:18722585559 |