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NEWS一、ASTM美标标准介绍:美标H型钢执行标准:ASTM标准:美国材料与试验协会,其英文全称为American Society for Testing and Materials,英...
欧标H型钢HEA100*96*5*8S355J2/S355NL12米欧标H型钢HEA100*96*5*8S355J0/S355JR/S235J012米欧标H型钢HEA100*96*...
欧标H型钢HEA100*96*5*8S355J2/S355NL12米欧标H型钢HEA100*96*5*8S355J0/S355JR/S235J012米欧标H型钢HEA100*96*...