Our China Zhonghai Steel Pipe Manufacturing Corporation is producing API seamless pipe/API seamless pipes/API seamless pipe mill/API carbon seamless mill/seamless API pipe,API 5L seamless pipe,API hot rolled seamless pipe,API carbon seamless pipe,API pipe,welcome u and u team come to visit at any time.
Standard:API SPEC 5L,EN10216-1,ASTM A 106,ASTM A53