ASTM A192/ASME SA192高压设备用无缝碳钢锅炉管
ASTM A53/ASME SA53黑色无缝钢管
ASTM A106/ ASME SA106高温用无缝碳素钢管
ASTM A179/ASME SA179热交换器和冷凝器用无缝冷拉低碳钢管
ASTM A192/ASME SA192高压设备用无缝碳钢锅炉管
ASTM A192/ASME SA192高压设备用无缝碳钢锅炉管
ASTM A53/ASME SA53黑色无缝钢管
ASTM A106/ ASME SA106高温用无缝碳素钢管
ASTM A179/ASME SA179热交换器和冷凝器用无缝冷拉低碳钢管
ASTM A192/ASME SA192高压设备用无缝碳钢锅炉管