.Grade:J55, K55, N80-1, N80-Q, L80, C90, P110 2.We Also Supply Permium Thread Products By Customer's Request 3.Size: Tubing Pup Joint From 1.9" To 4-1/2",Casing Pup Joint Fro4-1/2"to 13-3/8" 4.Type: NU, EU(tubing Pup Joint), STC,LC,BTC(casing ...Read More

　　　The Implemental Standards For The Oil Casings Are API 5CT; The Specifications Include From 60.3 To 508mm; The Steel Grades Include J55, K55, N80, L-80, P-110, C-90, C - 95, T-95 And So On; The Merchantable Claspers Are STC , L ...Read More