1,carbide grade:GY03 GY01 2,threading form: round & buttress 3,coating:TiN TiALN AL2O3 TiCN 4,for oil pipe and ... .Specifications: 4 TPI, 5 TPI, 8 TPI, 10 TPI,Thread: ROUND THREAD, BUTTRESS THREADCoating: TiN, TiCN, Al2O3, TiALNApplication: J55, N80, P110 ...