Standard :

According to API SPEC7 and SY5146 Standard .

Material and description :

Made of AISI 4145H , the contents of trace elements in effective control . The thicker central part of the drill pipe, joints and thickening of the middle part of the outer surface of carbide wear welding zone to be effective protection against wear. According length

I (single length of 9300mm) and II (single length 13500mm) drill pipe elevator combined with threaded joints may demand or request made of 18 ?rectangular shoulder.

Types:

Slick and Spiral HWDP .