Our head group factory set up new big size production line for hot rolled black rectangular and square pipes and all technical properties reach the standard level. And for the size range to extend to 500*500mm for square pipes, and 400*600mm for rectangular pipes.

Dong Peng Bo Da is one leading manufacturer for the hot rolled rectangular and square pipes, also for ERW pipes, GI steel pipes, SSAW steel pipes etc. Our RHS/SHS steel pipes the OD sizes from 15*20mm to 400*600mm/15*15mm to 500*500.  And the thickness from 1.0mm to 17.5mm. The standard we can do: ASTM A500, EN10219, EN10210, GB/T6728, AS 1163, JIS G 3466 etc. 

Our group is located in Daqiuzhuang, Tianjin, which is the biggest welded pipe production base in the world.Group is founded in 2006, and the register capital is 205 million RMB. It has five subsidiary companies: Tianjin Tianfeng Steel Pipe Co., Ltd; Tianjin Tianwang Steel Pipe Co.,Ltd; Tianjin FWS Trading Co., Ltd; Dong Peng Bo Da (Tianjin) Industrial Co., Ltd; FIVE STEEL (TIANJIN) TECH CO., LTD. After years of hard work, we have formed a diversified investment pattern of development, and in accordance with the requirements of new industrialization, we have given full play to their own advantages to achieve the scale, structure, quality and efficiency overall promotion.