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HejianHuanyuPetroleumMachineryCo.,Ltd.specializesindrillbits,drillpipe,Mudpumpand stabilizersforwaterwell,oilfield,construction,geothermal,directionalboring,andunderground foundationworkallovertheworld.Ourpurposeistosellthebestqualityproductsatthelowest possibleprice.Weareaprofessionalsupplierofnewandused(rebuilt)drillbitsusedforoilfiled,waterwell.Includingtriconebits,PDCbitsanddrillpipe.Variousof modelanddimensionavailable.Goodconditionandreasonableprice. Drillpipe API and ISO standard (alloy steel E.X.G.S) OD:2 3/8,2 7/8,3 1/2,4. 4 1/2 ,5 INCH UPSET:IU EU IEU Drill pipes in diameters of 50/60/73/89/114/127 millmeters(API Certification) Drilling joints in diameters of 68/78/105/121 millmeters Drill collar in diameters of 121/146/159/178 Gelogical drill pipes in diameter of 45/50/60 millimeters,API Drilling joints in diameter of 57/165/75 millimeters sizeDia(OD)wallthicknessGradeinmminmm23/82.37560.30.287.11E,X,G,S27/82.875730.3629.19E,X,G,S31/23.588.90.2546.45E31/23.588.90.3689.35E,X,G,S31/23.588.90.44911.4E31/23.588.90.44911.4X,G,S44101.60.338.38E,X,G,S41/24.5114.30.2716.88E41/24.5114.30.3378.56E,X,G,S41/24.5114.30.4310.92E,X,G,S551270.2967.52X,G,S551270.3629.19E551270.3629.19X,G,S551270.512.7E551270.512.7E,X,G,S51/25.5139.70.3619.17E,X,G,S51/25.5139.70.41510.54E,X,G,S65/86.625168.30.338.38E,X,G,S65/86.625168.30.3629.19E,X,G,S