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1.Standard:ASTM, DIN, GB, BS, JIS, ASME, API, AISI,, ANSI 2.Packing:Bundles, Wooden ...
Products SUP9, SUP10: 20Cr, 40Cr, SCM410, 42CrMo,. The size depend on customer need....
Product No: 20Cr, 40Cr,42crMo,55CrMn,.. the size depend on customer need. For more d...