Malaysia KKB company DIA508-2500mm snail welding unit; put into production in 2011.

Spain HANNIBAL DIA508-2500mm

Malaysia Petro-PIPE (SABAH) SDN BHD Company

Cangzhou Shuanglong Steel Pipe Co., Ltd. DIA 508-1820mm

Liaoyang large steel pipe factory DIA720-2540mm

Yangzhou Tongya Steel Pipe Co., Ltd. DIA406-1422mm