ASTM A193 B7 / ASTM A194 2H
ASTM A193-B7M / A194-2HM
ASTM A320 L7/ASTM A194 GR.7
ASTM A320 L7M/ASTM A194 GR7M
MATERIAL: 1040，1045，4140，4142
FINISH: AVAILABLE IN VARIOUS FINISYONGDING INDUSTRY CO.,LTD
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