... it with clients request sepc. details We are the gold supplier of alibaba. Our company CangZhouTianYi Co.Ltd located in the ... ,Cangzhou City,Hebei Province,China,which is the base of steel pipe ,our company occupies an area of 80,000 sq ... STPG370/410,JIS G3444 STK400,JIS G3452 SGP seamless steel pipe,hot galvanized..steel..pipe,stainlesssteel..pipe,etc.according..to..the..customer ...