... "--48" (DN15--DN1200) 4.THK: SCH5S--SCH160 XXS 5.API,ISO,CE Hebei Longrun Pipeline Group CO.,LTD We are manufacturer ... .28, GB, DIN,ANSI, etc.Certification ISO9001:2000, ISO90001:2008,ISO/TS16949Application rangPetroleum,Chemical,Election Power,Oil&Gas,Shipbuilding,Water-treatment ...