代表材質(zhì):20G,12Cr1MoVG,15CrMoG,P5,P91,T91,T22等
執(zhí)行標準:GB/T5310,ASTM A335M,ASTM A213M
咨詢熱線:400-107-4421咨詢電話:022-59814151
微信號:13512984006