• Ministry of Commerce of the P.R.China China Commodity Net

    ERW Steel Pipe/LSAW Steel Pipe. H.S CODE73066100 ModelExport area:North America Central South America ASIA Europe Africa Oceania . Jiangyin Jianhe Steel , founded in 2005, is a leading manufacturer and distributor of steel structures, steel tubes and pipes in diverse fields such as infrastructure and construction industry

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  • Ministry of Commerce of the P.R.China China Commodity Net

    Green pipes, raw steel tubes, are processed through a number of steps to make them into drill pipes. First, the walls of green pipes are thickened by a process called upsetting through which a pipes exterior surface is pushed inward. Next, the pipes are threaded and receive a strength enhancing copper plating.

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  • 《世界买家网》数据查询 纵向潜弧焊管道,电阻焊管道,螺旋潜弧焊

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