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• 1.4021 round bar steel round bar
• S235JR Steel Round Bar
• 4140 hollow bar hot rolled
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• 180mm seamless steel pipe tube
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• Mild Carbon Weld Black Steel Square / Round / Rectangular Tube / Pipe
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• En10305 DIN17175 St35 St52 A519 4130 Seamless Carbon Precision Steel Tube
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• China's Professional Manufacturer Prime Quality Carbon Steel Welded (seamless) Steel Pipe

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• ASTM A179 Cylinder Tube Carbon Steel Seamless Tube

• Hot rolled bearings steel tube 52100
• Seamless Steel Pipe for Automobile Shock Absorber
• ISO2531/En545 Ductile Iron Pipe K9/Class C for Water Supply
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• Heavy Wall Thickness Seamless Steel Pipe 219X50
• DIN1626 St42-2 Cold Drawn Carbon Steel Seamless Tube
• ASTM A106 Gr. B Mild Steel Hydraulic Cylinder Tube
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• Bearing Steel Pipe (SAE 52100)
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• ASTM A36 Steel Pipe Seamless Carbon Steel Pipe Galvanized Boiler Tube 20G
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• ASTM A53 schedule 40 Black ERW Water and Construction Hollow Steel Pipes
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• 4"Seamless Steel Tube in China Supplier
• Cold Drawn Seamless Steel Pipe with High Precision Size