- Haibao Steel Grou
- oiler tube, boiler pipe, flange, steel wire rope.
- Address:A, 6F, Times Plaza, Renmin Road (M), Zhangjiagang Suzhou, Jiangsu
- SIAM STEEL PIPE COMPANY LIMITED
- api 5ct seamless steel casing and tubing, api 5l seamless line pipes, boiler pipe.
- Address:CHANGCHUN, Handan, Hebei, China
- Wuxi Oulong Special Steel Pipe Co., Ltd
- seamless carbon&alloy steel tube, pipe for liquid, structure, pressure boiler, oil casing&drill use.
- Address:No.8 lutong Rd,luqu town,huishan district, wuxi, jiangsu, China