Material:J55,K55,N80,L80,P110, Thread:STC,LTC,BTC Standard:API 5ct ... Co.,Ltd professionally produces all kinds of casing pipes.Material:J55,K55,N80,L80,P110Thread:STC,LTC,BTCStandard:API 5ct ISO9001Size ... 5CT,ISO9001Length:R1 R2 R3 Grade: J55.K55.N80.L80.P110Packing:standard export bundle wrapped with strong steel strip Payment ... company! Expecting to cooperate with your company sincerely ! casing pipe