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We produce: - Carbon Steel Pipes & Fittings A106 /A53 Gr. B - Cylinder Rod & Honed Tubes ST52,BK S,DIN2391,ASTM A 106 - Alloy Steel Pipes & Fittings - Boiler tube ASTM A179/A192/A210C/ A210/A213/16Mo3 Email：sale@ WhatsApp and WeChat: : 8618713738505