... , pls check the below infor regarding to the products. professional oil pipe supplier: SEAMLESS API5CT casing:4 1/2" - 20", GRADE:,K ... . ENDING: EUE, NUE API 5L products is common SEAMLESS line pipe:1.02“ - 24”, :GR.B, X42, X46,X52,X60,X70 ... . COATING:PE/3PE/FBEAPI 5D products.(as below pictures ) drill pipe:2 3/8"-5 1/2", GRADE: E75,X95.G105 ... 1/8" GRADE:material alloy steel 4330/4620/4130. api oil pipe