Hebei Zhongyuan Steel Pipe Manufacturing Co., Ltd, we produce welded steel pipe professionally, owning advanced inspection equipments and passing PED、API Spec5CT, API Spec5L, GB/T9711.1, GB/T9711.2, GB/T8163, SY/T0413-2002 and other international certificates.
Spiral submerged-arc welded steel pipe: which the diameter isΦ219mm-Φ2420mm,wall thickness is 5.56mm-20.06mm ..