| 3 R software solutions | Germany |
| Ajmal Steel Tubes & Pipes Industries LLC | UAE |
| ASMAG - Anlagenplanung und Sondermaschinenbau GmbH | Austria |
| atis GmbH | Germany |
| Atomat S.p.A. | Italy |
| August Blecher KG | Germany |
| Baoding Mingshuo Electric Co.,Ltd | China |
| Baoding Sifang Sanyi Electric Co., Ltd. | China |
| Birlik Makine San. Tic. Ltd. STI | Turkey |
| Brands Advertising LLC | UAE |
| China Petroleum Technology & Development Corporation (CPTDC) | China |
| D B Engineering Pvt. Ltd. | India |
| Dedico Tyre Co., Ltd | China |
| Dee Tee Industries Ltd. | India |
| Euromaquina S.L. | Spain |
| Formtek | USA |
| Gallium Industries Ltd | India |
| GMT Industries Limited | India |
| Gulf Development and Construction (INMA) | UAE |
| HBIS SUBSIDLARYA (Baikuan) Square & Rec Tube Manufacture Co., Ltd. | China |
| Hebei Xinfeng High-Pressure Flange and Pipe Fitting Co., Ltd. | China |
| Horen Industrial Co., Ltd. | Taiwan |
| Inductotherm (India) Pvt. Ltd. | India |
| International Tube Association e.V.(ITA) | Germany |
| Intras Ltd. | United Kingdom |
| Jiangsu Forged Pipe Fittings Co. Ltd. | China |
| Jiangsu New Victor Industrial Co., Ltd | China |
| Jiangyin Unique Flange Manufacturing Co. Ltd. | China |
| K.D Industries Inc. | UAE |
| M.T.C. Bamieh S.R.L. | Italy |
| Mair Research S.p.A. | Italy |
| Metallurgical Council of CCPIT | China |
| Milltech Co., Ltd. | South Korea |
| NEUMO GmbH & Co. KG | Germany |
| Nirmal Overseas Ltd. | India |
| Officine MTM SpA | Italy |
| PDS Profil Dilme sac Makina | Turkey |
| Perfect Trading (Shanghai) Co., Ltd. | China |
| Robert Röntgen GmbH & Co. KG | Germany |
| Schuler Pressen GmbH | Germany |
| Seokwang Industrial Co.,Ltd. | South Korea |
| SEUTHE GmbH | Germany |
| Shan Hua Plastic Industrial Co., Ltd. | Taiwan |
| Shandong Hongmin Roller Mould Co.,Ltd | China |
| Shandong Metallurgical Petroleum Machinery Co.,Ltd | China |
| Shanxi Dong Huang Windpower Flange Manufacturing Co., Ltd. | China |
| Sheng Chyean Enterprise Co., Ltd. | Taiwan |
| Shenyang Uniwel Machinery Co. Ltd. | China |
| Shijiazhuang Forever Machinery Co., Ltd. | China |
| SMACO (M) Sdn. Bhd. | Malaysia |
| Specta Group | United Arabia Emirates |
| Stappert Intramet SA | Belgium |
| Steamline Industries Ltd. | India |
| Surya Pipes | India |
| Suzhou Yuli Pipeline Industry Co. Ltd. | China |
| Tianjin Fuchen Machinery Manufacturing Co., Ltd. | China |
| Tianjin United Steel Pipe Co., Ltd. | China |
| Tianjin Xinyue Industrial And Trade | China |
| UFUK Boru Sanayi ve Ticaret A.S. | Turkey |
| Upcast Oy | Finland |
| Voli Fuar Hizmetleri A. S. | Turkey |
| Vollmer Italia s.r.l. | Italy |
| Wuxi Longda Metal Material Co,.Ltd. | China |
| Yingkou changxin Pipe Manufacturing Co. LTD | China |
| Yingkou Chengde Pipe Co., Ltd. | China |
| Yingkou Haitai Metal and Pipe Fittings Co., Ltd. | China |
| Yoder Member of the Formtek Group | USA |
| Zhejiang Eastar Steel Pipe Co., Ltd. | China |
| Zhejiang Pengye Stainless Steel Tube Industr | China |
Mr.张：15821106898 微信