API 7-1 бурильных труб

ZJSB heavy weight drill pipe is made of whole of AIS14145H after whole-length heat treatment, and all physical properties is subject to SY/T5146-1997. WEARING BELT ZJSB integral heavy weight drill pipe welds standard wearing ring at both ends andmiddle bulb, among which 101mm width wearing belt at both ends of male and female button (in accordance with the customers demand, ZJSB could weld 25.4mm width wearing belt on18°oblique plane of circular bead at the female button end), and 76mm width wearing belt on middle bulb. ZJSB 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 ZJSB 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: l Conventional size of the product l Length range l Size and type of wearing belt l Whether need internal coating l Sub length l API standard stress scattering groove STANDARD SIZE OF INTEGRAL HEAVY WEIGHT DRILL PIPE SizeOutsidediameterCInsidediameterEAdapterPipeSingle mass kgkgFormOutsidediameterAPin and box shoulder bevelDFmmUpset lengthMiddle partDmmEndBmmmminmminmm inI type (single length 9300mm)ZH-JZ55-51/2FH-I139.751/292.135/851/2 FH177.87170.7152.4144.5730ZH-JZ50-NC50-I127.0576.23NC50(41/2IF)165.161/2154.0139.7130.2700ZH-JZ45-NC46-I114.341/271.4213/16NC46(4IF)158.861/4145.3127.0117.5585ZH-JZ35-NC38-I88.931/252.3921/16NC38120.743/4116.3101.692.1370 If you want to communicate with me for the integal heavy weight drill pipe, please send inquir y to me or contacrtme by phone. We are sure to satisfy you with our topping quality and aftersales service. For more details ,plese never hesited to contect us. Thanks and best regards! Ivy wang Sales Manger Jiyuan Zhongyuan Special Steel Drilling Equipment Co,Ltd Mobile: 0086+0391+13513819207 Tel: 0086+0391+6800189