Steel Pipe
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API SPEC 5CT Casing GB/T 19830 Petroleum and Natural Gas Industries Casing for Oil and Gas Wells Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the whole well after drilling and completion. Several layers of casing are used for each well depending on the drilling depth and geological conditions. Cement shall be used for well cementing after casing running.
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API SPEC 5CT tubing GB/T 19830 Steel Tubes for Petroleum and Natural Gas Industries Tubing is a device used to extract oil from the underground oil layer, usually connected by a multi-section structure, including pipe piles, casing, well depth, tail pipe and other devices, made of H40, J55 and other special materials, with pressure resistance, wear resistance and corrosion resistance, play the role of oil and gas extraction, transportation, support the well and oil well stability.
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API SPEC 5L Sleeve GB/T 9711 Petroleum and Natural Gas Industries-Steel Pipes for Pipeline Transportation Systems GOST 20295 welded steel pipe for oil and gas pipeline Line pipe is a kind of pipeline mainly used for oil, natural gas, hydrogen, carbon dioxide and other fluid transportation. It is usually made of L245 ~ L480 and other steel grades. It has high pressure resistance, low temperature resistance, corrosion resistance and other properties. It can adapt to high cold, hot and humid and marine environments. At the same time, it is connected by welding, threads, flanges and other methods to achieve long-distance transportation.
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Fire‑fighting piping refers to pipelines used in automatic sprinkler fire‑suppression systems to convey fire‑extinguishing water, gases, or other media. These pipes are typically joined by welding, grooving, notching, or threading and must withstand a rated working pressure of no less than 1.2 MPa. Due to their specialized applications, fire‑fighting pipelines are subject to stringent requirements regarding sealing performance, corrosion resistance, reliability, and ease of installation.
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The axle tube is an important part of the axle of automobiles and semi-trailers. It is mainly used to connect and support various parts of the axle, and to transmit various forces and torques during the driving of the vehicle. With the development of lightweight automobiles, the steel grade of axles has also been continuously improved, using carbon steel or alloy steel through tempering, forming and machining processes. Good strength, toughness and fatigue resistance are required. Commonly used strength grades are 500MPa, 600MPa and 700MPa.
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Boiler and heat exchanger tubes
GB/T 28413 Welded steel tubes for boilers and heat exchangers Boiler and heat exchanger tubes can be divided into high pressure and medium and low pressure boiler tubes according to the operating temperature. Their sizes range from small diameter capillary tubes to large diameter tubes with a diameter of several meters. They are mainly used to transfer heat or separate fluids. They are widely used in HVAC, chemical, electric power and other industries. Because of its particularity, it is usually made of high-quality carbon steel or alloy steel, and its quality is guaranteed by flattening, flaring, pressure test and so on.
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Anticorrosive steel pipe is suitable for coal mine underground water supply and drainage, underground shotcrete, positive and negative pressure ventilation, gas drainage, fire sprinkler, etc. The thermal power plant process water waste residue and transportation pipeline have excellent applicability to the water supply pipeline of fire sprinkler and sprinkler system.
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Anticorrosive steel pipe has the characteristics of corrosion resistance, high toughness, good flexibility, good scratch resistance and rapid crack resistance. Generally, the inner and outer walls of the steel pipe need to be treated with anti-corrosion, and their respective anti-corrosion treatment methods are different.
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API steel pipe is a kind of low carbon steel pipe, because of its easy processing, it is widely used in structural pipes and fluid pipes. However, the common problem of API steel pipe is that there are pits and pits on the surface, or it is easy to crack in the later bending, flattening and other processing.
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High-frequency welded steel pipe: it is a product produced by using the skin effect and proximity effect of high-frequency current to heat and melt the edge of the tube blank after the hot-rolled coil is formed by the forming machine, and pressure welding is carried out under the action of the squeezing roller.
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Anticorrosive steel pipes are suitable for high-rise building water supply, heating network, tap water engineering, gas transportation, buried water transportation and other pipelines. Oil transportation pipelines, chemical and pharmaceutical industries, printing and dyeing industries such as transportation of corrosive media process pipelines.
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Anticorrosive steel pipe is suitable for coal mine underground water supply and drainage, underground shotcrete, positive and negative pressure ventilation, gas drainage, etc. Thermal power plant process water waste residue, escort pipeline; Water supply pipeline for fire sprinkler and sprinkler system has excellent applicability.
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The main products are casing, oil pipe, line pipe, fire pipe, transmission shaft pipe, axle pipe, bus rectangular tube, compressor tube, roller tube, solar torque shaft tube, boiler and heat exchanger steel pipe, slotted pipe, structural pipe and pile pipe, etc.
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No.16 Hengtai Road, Industrial Park, Daqiuzhuang Town, Jinghai District, Tianjin
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