Standard: ASTM A53, ASTM A500,BS1387,BS EN10219,EN10217 GB/T3091-2001 Material: Q195,Q235,Q345,GRA GRB,S235JRH,S275JOH,S355JOH ETC, Outdiameter: 6mm-813mm(1/4”to 32”)
Standard: ASTM A500, BS EN10219,EN10210 GB/T3094,GB6728,JIS G3466-2010 Material: Q195,Q235,Q345,GRA GRB,S235JRH,S275JOH,S355JOH,STKR400,SS400 ETC, Outdiameter: 10*10mm-600*600mm
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