Schweres Bohrrohrelement

ZYTG's heavy weight drill pipe is made of whole rod of AISI 4145H after whole-length heat treatment and all physical properties is subject to API. SIZE AND TYPE OF HARDBANDING ON HEAVY WEIGHT DRILL PIPE To optimize wear resistance, hardbanding of ZYTG integral heavy weight drill pipe is standard on tool joint connections and the center upset. The width of the hardbanding on the box and pin connections are 4". Moreover, in accordance with the customers demand, ZYTG could weld1" width hardbanding on18°oblique plane of circular bead at the female button end, and 76mm width wearing belt on middle bulb. ZYTG not only can weld iron base powder alloy and granular tungsten carbide on the integral heavy weight drill pipe, but also can weld ARNCO 100XT wearing belt. INTERNAL COATING OF HEAVY WEIGHT DRILL PIPE ZYTG can lay DPC liquid coating on the integral heavy weight drill pipe in accordance with customers demand, which can prevent from formation of corrosion pitting as well as prolong service life of whole heavy weight drill pipe. PLEASE SPECIFY WHEN ORDERING OR INQUIRING: Conventional size of the product Overall Length Size and type of hardbanding Whether need internal coating Sub length API standard stress relief groove