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特價(jià)供應(yīng)DN900流體SY5037 Q235B螺旋管
螺旋鋼管是以帶鋼卷板為原材料，經(jīng)常溫?cái)D壓成型，以自動(dòng)雙絲雙面埋弧焊接而成的螺旋縫鋼管。螺旋鋼管是采用雙面自動(dòng)埋弧焊制成的 		2017-02-08
特價(jià)供應(yīng)DN1000樁用SY5040 Q235B螺旋管
螺旋管的常用標(biāo)準(zhǔn)一般為:SY/T5037-2000（部標(biāo)、也叫普通流體輸送管道用螺旋縫埋弧焊鋼管）、GB/T9711.1-1997（國標(biāo)、也叫石油天 		2017-02-08
特價(jià)供應(yīng)DN1100天然氣GB9711 X42螺旋管
口徑: 219-3620mm 壁厚: 5--30mm材質(zhì):L245-X70標(biāo)準(zhǔn): GB9711應(yīng)用: 外部做防腐處理或黑漆，常用于石油，天然氣輸送用管線鋼管.其中 		2017-02-08
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