... 4)wt:sch10-sch160 5)API,ISO,CE,etc pipe fitting 90degree LR elbow carbon steel sizeSeamless:from 1/2" to ... WP9,WP91, ect)qualificationISO9001:2008 ,ISO 14001 OHSAS18001 , API ,etcpackingin wooden cases, pallets,or as for clients'requirementsapplicationPetroleum, chemical, machinery, electric ... testing,Super living inspection,Magentic particle inspection,etc pipe fitting 90degree LR elbow carbon steel