GAGEMAKER single instrument male thread taper measuring instrument ET-7002

Petroleum Equipment Co., Ltd. Shanghai Jing Wang 15800691952 regulation buttress joint tensile properties than the circular nipple is much higher, but its poor sealing performance, equivalent to only 30 percent of the tubular body. Therefore can not be used for high-pressure gas well development in order to meet the needs of various special conditions to ensure the structural integrity of the well string and seal integrity, many famous oil well pipe plant have developed more than 100 kinds of patented technologies special threaded joint drill pipe joint thread gauge API SPEC 7, said tool joint thread is "rotary shouldered connections", is connected to the oil drilling industry leading mechanical drill string member institutions. This band has a taper thread by axial displacement to compensate for errors in diameter connecting portion characteristics, so a high degree of interchangeability, with close and easy assembly and disassembly. Internal thread flat (IF), consistent eye type thread (FH), regular type thread (REG), a digital type thread (NC) oil casing oil thread gauges mainly used for drilling oil wells during drilling and completion after on the wall of the support, and after completion to ensure the normal operation of the entire drilling process wells. Due to different geological conditions, underground complex stress state, pulling, pressing, bending, torsional stress acting on the combined effect of the tube, which is the quality of the casing itself made a higher demand. Once the casing itself is damaged for some reason, it could lead to the whole production wells, or even scrapped. Pipe thread gauge (TBG; UPTBG) casing thread gauge (CSG LCSG) Partial ladder thread gauge (BCSG) line pipe thread gauge (LP) special deduction oil gauge round nipple although the sealing performance is better, but the threaded portion tensile strength equivalent to only about 60 percent of the tubular body. Thus, round the nipple can not meet well, ultra deep development needs.