Dear Sir or Madam::How are you!Have a good day!Hebei Xinlian Petroleum Machinery Co.,Ltd professional produces all kinds of casing pipes.1.Material:J55,K55,N80,L80,P1102.Thread:STC,LTC,BTC3.Standard:API 5ct ISO90014.Size:4 1/2â-20â5.Wall thickness:6.35-12.7mm6.Certificate:API 5CT,ISO90017.Length:R1 R2 R38.Grade: J55.K55.N80.L80.P1109.Packing:standard export bundle wrapped with strong steel strip 10.Payment term:FOB,CFR,CIF 11.Delivery time:20 days after the purchase order is confirmed Welcome to contact with me !Hoping to cooperate with your company sincerely !Joy Song