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Diameter:
standard : | Aisi,Astm,Bs,Din,Gb,Jis |
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وصف المنتج
Tianjin Youfa Steel Co., Ltd. is a
manufacturer specializing in the research and development, production, sales
and service of carbon steel coils, galvanized sheet coils, carbon steel pipes,
galvanized pipes, alloy pipes and seamless
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