أنابيب ومواسير فولاذية - الصين

DURANICE APPLIED MATERIALS (DALIAN) CO.,LTD

CANGZHOU SYNDA STEEL PIPE GROUP

QINHUANGDAO ZHONGYAN MACHINERY CO. LTD.

HANDAN DEQI METAL MACHINE MANUFACTURING CO.,LTD

HUNAN GREAT STEEL PIPE CO.,LTD

OTRISH GMBH - SHANGHAI REPRESENTATIVE OFFICE

TIANJIN YOUFA STEEL PIPE GROUP

ZJG JK MACHINERY CO.,LTD.

ZHAOQING CITY FEIHONG MACHINERY & ELECTRICAL CO., LTD

SHANDONG LIAOCHENG ZGL METAL MFG CO.,LTD

HENGTONG TUBING CO.,LTD

HEBEI SENHAI PIPELINE CO.,LTD.

CHANGZHOU CHENGXIN METAL PRODUCTS CO.,LTD

TIANJIN BINHAI GUANGHAO PIPE FITTING CO. LTD

TIANJIN PB STEEL PIPE & TUBE CO.,LTD.

EATHU CASTING AND FORGING CO., LTD.

BAOSHENG INTERNATIONAL CO., LTD

SHANDONG JIANNING METALS CO.,LTD

CANGZHOU JUNENG STEEL PIPE CO.,LTD

JIANGYIN DINGRUN PRECISION STEEL TUBE CO., LTD

HANDAN ZHENGDA STEEL PIPE CO.,LTD

ZHEJIANG YINGSHENG STAINLESS STEEL CO.LTD

SHANGHAI SHENHUA STEEL TUBE CO., LTD

JIANGYIN SUNDREAM PRECISION STEEL TUBE CO.,LTD

ZHONGYOU TIPO GROUP INTERNATIONAL SALES CO.,LTD

BEIJING SHENGSHIHUANENG INTERNATIONAL TRADE CO.,LTD

WENZHOU LONGWAN NANYANG STEEL PIPES FACTORY

WEIFANG EAST STEEL PIPE CO., LTD

JIANGSU RONTECH PETROLEUM TECHNOLOGY INCORPORATED COMPANY

CNPC BAOJI PETROLEUM STEEL PIPE CO., LTD.