... .1.Size:,3 1/2", 4",4 1/2", 5", 5 1/2",6 5/8"2.Products description:Our integral HWDP is made ... upset (fully flush on request).The types of Hardbanding include Iron-Matrix powder alloy, Tungsten Carbide particle, and Arnco 100XT.HWDP ... corrosion and extend using time. heavy weight drill pipe(integral,6-5/8")