海量資源,盡在掌握
 表2-33輸送流體用無(wú)縫鋼管(摘自GB8163—87neqISO559—77)結(jié)構(gòu)用無(wú)縫鋼管(摘自GB8162—87neqJISG3444—82) mm熱軋(擠壓,擴(kuò))鋼管外徑壁厚外徑壁厚外徑壁厚外徑壁厚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) [閱讀本文] >>