... -1/2"~20" Steel grade: J55, K55, N80, L80 Thread Type: LTC, STC, BC Quality Control: ISO9001Product Descriptionoil pipeCasing is a ... /2"~20"Steel grade: J55, K55, N80, L80, P110, Q125Thread Type: LTC, STC, BCProduction Standard: API SPEC 5L\API SPEC 5B ... Price/Payment: T/T,L/CPackingae:Bulk,bundle or seaworthy wooden case.With or without edge protector,steel hoop and seals.seamless ...