![]() Upon the customer's request, The Break-in process is conduced to economize the rig handling time. All threads would be phosphated or copperized and the roots are cold rolled to improve the resistance of galling during initial break-in and drilling operation. All threads would be machined with CNC Lathes and inspected with related thread gauges in conformance with API Specification. ![]() The drill pipe undergo a full-length inspection that checks the defects especially the strict inspections on weldneck/upset region are preformed with our both manual and automatic inspection equipments to ensure the high quality.Ĥ The thread is the most important factor for drill pipes. Heat treatment programs are established on the basis of the actual chemical analysis of each heat of steel to ensure the materials meet or surpass the requirements of API Specification.ģ. Heat treatment must be uniform and deep enough to ensure required physical properties full length, especially in the critical sections of the connection and weld zone. Heat Treatment is a decisive process in the production of tool joints and pipe body. The residual elements such as sulphur and phosphorus are strictly controlled in the pipe body and tool joints material during the steel making process, which makes the kind of material with high physical properties.Ģ. Drill pipe are manufactured in according to or exceeds the requirement of API 5D, 7, and RP7G. ![]()
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