We can provide the following drill pipe acc to API 5D: Size: 2 3/8", 2 7/8", 3 1/2", 4", 4 1/2", 5", 5 1/2" Grade: E, X, G, S End Type: EU, IU, IEU, Wall thickness: 7.11mm---10.54mm If you need my help, pls contact me by e-mail or message here.