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 表2-33输送流体用无缝钢管(摘自GB8163—87neqISO559—77)结构用无缝钢管(摘自GB8162—87neqJISG3444—82) mm热轧(挤压,扩)钢管外径壁厚外径壁厚外径壁厚外径壁厚322.5~8.0763.0~19.01524.5~36.03779.0~75.0382.5~8.0833.5~24.01594.5~36.04029.0~7 (共 5329 字) [阅读本文] >>