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Petroleum drill stem joint (butt joint) is the use of oil, natural gas drilling in the tube body on the welding head with the drill pipe, including internal and external thread joint. Drill pipe joints the company producing all kinds of specifications, can provide a variety of drill pipe blank, light green and finished products according to user needs. The joint is made of high quality alloy steel, with a special heat treatment, high strength, good toughness, long service life. Thread surface by copper or phosphating treatment, excellent anti sticking properties, mechanical properties of SY/T 5290 and API Spec7 requirements
The mechanical properties of drill pipe joint
The mechanical properties
Tensile strength
Yield strength
Elongation %
Impact work 21(J)
Brinell hardness
API Standard
≥965.3
≥827.4
≥13
≥54
≥285
Table parameters of drill pipe joint:
Drill pipe joint code
Specification and type
Nominal quality
Grade
Internal, external thread joint diameter
The inner diameter of the joint
Internal and external threads, shoulder joint chamfer diameter
According to customer requirements, production to meet customer requirements of non-standard drill pipe and tool joint.
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Changzhou Oilfield Petroleum Equipment Co., Ltd. is located in Changzhou high tech Industrial Development Zone, with the advantage be richly endowed by nature. It is east to Shanghai, Wuxi, West Nanjing, North pillow Yangtze River, has the lead in all directions of tra... Changzhou Oilfield Petroleum Equipment Co., Ltd. is located in Changzhou high tech Industrial Development Zone, with the advantage be richly endowed by nature. It is east to Shanghai, Wuxi, West Nanjing, North pillow Yangtze River, has the lead in all directions of tra...
