... : SCH5-80 4.OD:1/2''-24' 5.ISO certified Part Namesteel /stainless steel pipe teeSize1/2"-24"Schedulesch5, sch10s,sch10s ... ,GOST,ETCCE and certificationISO9001:2000,BV,SGS,LOYIDApplications rangePetroulem,chemical,power,gas,metallegy,shipbuilding,construction water and nuclear power etc.