1. AbstractChina Vigor’s Polished Rod is produced with API Specification 11B, polished rods are available for different material grade option such as AISI 1045,AISI 4140, AISI 8620, SS431 etc,AISI 1045 with hard metal spraying also available.2.Product introductionChina Vigor’s Polished Rod with an optimal surface finishing to ensure an appropriate sealing in the stuffing box, polished rods and couplings are furnished with cold formed fully rolled threads.China Vigor’s polished rods are available for different material grade option such as AISI 1045,AISI 4140, AISI 8620, SS431 etc. The SS431 polish rod minimum tensile strength is 793Mpa,on the corrosion resistance and torque strength it also has better performance than AISI 1045 or AISI 4140,it's ideally suited for use with Drive Rods in Progress Cavity Pump(PCP) application. China Vigor Drilling provides diameters of 1 1/8 through 1 3/4″ with lengths from 8 to 40′.3.FeaturesPolished Rod is available for different material grade option such as AISI 1045,AISI 4140, AISI 8620, SS431 etc,AISI 1045 with hard metal spraying also available.4. ParameterTypeCMnSiPSCrNiMo1045 Piston Steel0.43-0.500.60-0.900.25 max0.040 max0.050 max///4140 Alloy Steel0.38-0.430.75-1.000.20-0.35 max0.035 max0.040 max0.80-1.10/0.15-0.258620 Norloy Steel0.18-0.230.70-0.900.15-0.35 max0.035 max0.040 max0.40-0.700.40-0.700.15-0.25431 Stainless Steel0.20 max1.0 max1.0 max0.040 max0.030 max15.0-17.01.25-2.50/If you are looking for competitive, high quality and fast delivery oilfield drilling jar in stock, or if you are planning to buy drilling jar API from one of the leading hydraulic drilling jar, machenical drilling jar, double acting hydraulic-mechanical drilling jar, 8"drilling jar spare parts, mandrel sub for drilling jar manufacturers and suppliers China, please feel free to contact VIGOR.