In oil field drilling projects, drill pipe are the main component connecting ground rotating system, hoisting system and circulatory system with drill collars and drill bits. Through them, the rotary table revolves drill bit, the hook lifts the bit, and mud is sent to the well bottom to form a cycle so as to realize that the bit crushes rock stratum for continuous drilling. (Specifications, nominal weight, plain end calculated weight, outside diameter, wall thickness, steel grade,
upset form, external upset, internal upset, internal-external upset)
Connection Type:NC26,NC31,NC38,NC40,NC46,NC50,2 3/8IF,2 7/8IF,3 1/2IF,4FH,4IF,4 1/2IF
Steel Grade:E-75,X-95,G-105,S-135
