... P91 size-1/2-24 inch thickness-sch10-160,XXS certificate-ISO,API,CE Seamless steel pipe material-alloy steel(A335P11 ... package-seaworthy package. wooden pallet application-boiler heat, exchange, shipbuilding, construction the third party inspection-BV,SGS,TUV certificate-ISO9001-2000,API,CE inspection ...