lybro 发表于 2009-7-23 08:57:22

ASTM A 179-1990热交换器和冷凝器用无缝冷拉低碳钢管

ASTM A 179-1990 Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
页: [1]
查看完整版本: ASTM A 179-1990热交换器和冷凝器用无缝冷拉低碳钢管