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Description:Commonly used in drilling, cementing and workover services as flexible connectors between standpipe and swivel or between pump and standpipe to deliver water-base mud, oil-base mud,cement slurry and washing fluid at high pressure in large volume. Currently below specification available from us: 1. Rotary drilling hose (I.D. 3", W.P.4000psi, up to 18m long, coupled with API LP thread) 2. rotary drilling hose (I.D. 3", W.P.5000psi, up to 21mlong connect with API NPT thread) 3. Rotary drilling hose (I.D.2", W.P.2000psi, up to 21m, with swaged fittings) Coupling: Swaged fitting with API LPmale thread, also availabel with Hammer unions, hubs or flanges. Special end fitting upon customers request, such as GOST BSPT, VICTAULIC . Standard: API Spec 7K License number 7K - 0078