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廠家直銷河北76*3.5高壓鍋爐用GB5310無縫鋼管
2017-02-08
廠家直銷河北219*7普通流體輸送用SY5037螺旋管
2017-02-08
廠家直銷河北426*9石油天然氣用GB9711螺旋管
2017-02-08
廠家直銷河北88*4低壓流體用GB3091直縫鋼管
2017-02-08
廠家促銷DN32低中壓鍋爐用20#無縫鋼管
2017-02-08
廠家促銷DN40高壓鍋爐用12Cr1MoVG無縫鋼管
2017-02-08
廠家促銷DN50化肥設備用Q235B無縫鋼管
2017-02-08
廠家促銷DN65石油裂化用20#無縫鋼管
2017-02-08
廠家促銷DN300基礎樁用螺旋鋼管Q235B
2017-02-08
廠家促銷DN20低壓流體輸送用Q195直縫鋼管
2017-02-08
特價供應DN125結構用GB8162 10#無縫鋼管
2017-02-08
特價供應DN150流體用GB8163 20#無縫管
2017-02-08
特價供應DN200低中壓鍋爐GB3087 20#無縫管
2017-02-08
廠家直銷20#無縫鋼管 GB8162/8163/3087熱擴管
2017-02-08
廠家現貨供應20#無縫鋼管 GB8163/3087冷拔管
2017-02-08
廠價批發 河北20#無縫鋼管
2017-02-08
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