Large-diameter plastic-coated steel pipes are used in pipeline installation. There are many installation methods and good use effects. Large-diameter plastic-coated steel pipes are used in fire-fighting pipelines and power pipeline installations. They all play an important role in underground mining

Hot-rolled seamless steel pipe: Hot rolling is relative to cold rolling, cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling above the recrystallization temperature.Advantages of hot rolled seamless steel pipe:It can destroy the casting structure of the steel

The stages of the mechanical expansion process of large-diameter steel pipes:The steel plate is first pressed into a U shape and then into an O shape in the forming mold, and then internal and external submerged arc welding is performed. After welding, the diameter is usually expanded at the end of

With the continuous development of our country's economy, the country is vigorously developing the energy industry. Long-distance API oil and gas pipelines are an important way to ensure energy security. During the anti-corrosion construction process of oil (gas) pipelines, the surface treatment of

Thin-walled seamless steel pipes are made of steel ingots or solid tube blanks that are perforated into capillary tubes and then made by hot rolling, cold rolling, or cold drawing. Thin-walled seamless steel pipes play an important role in my country's steel pipe industry. Thin-walled seamless steel

Adjustment of the position of the high-frequency induction coil of the straight seam steel pipe:The excitation frequency of straight seam steel pipe is inversely proportional to the square root of capacitance and inductance in the excitation circuit or proportional to the square root of voltage and

3PE anti-corrosion steel pipe is a high-level anti-corrosion steel pipe. It is composed of primer + glue + PE three-layer anti-corrosion. It has high corrosion resistance and high wear resistance. The normal service life is about 30 years. Well, once the anti-corrosion layer is damaged, it will corr

1. Different pressure bearing capacity:The working pressure that the seamless steel pipe can generally withstand is within 20 kg, which is the safest use range. It is generally used for low-pressure fluids such as water, gas, and compressed air; seamless steel pipes can withstand ultra-high pressure

The wall thickness of the spiral welded steel pipe is uniform, it looks good, the force is uniform, and it is durable. The wall thickness of the spiral welded steel pipe is uneven, and the steel pipe is unevenly stressed. A phenomenon that easily occurs during the steel pipe rolling adjustment proce

1. Welded steel pipes for low-pressure fluid transportation (GB/T3092-1993) are also called generally welded pipes, commonly known as clarinet pipes. It is a welded steel pipe used for conveying water, gas, air, oil, heating steam, and other general lower-pressure fluids and other purposes. The wall