106B无缝钢管 选购指南
ASME SA210 Gr.A1锅炉和过热器用无缝中碳钢管
ASTM A53/ASME SA53黑色和热浸镀锌焊接及无缝钢管 ASTM A106/ ASME SA106高温用无缝碳素钢管(Gr.A Gr.B Gr.C) 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 A199/ASME SA199热交换器和冷凝器用冷拔无缝合金钢管 ASTM A200/ASME SA200炼油厂用无缝中合金钢炉管 ASTM A210/ASME&n......