Welded steel pipe

Welded Steel Pipe

Welded steel pipe is a kind of pipe made of steel plate or strip material which is welded after being rolled and formed. These steel pipes have high accuracy and surface quality, and have smooth wall, small size and weight, good economy, and are widely used in oil, gas, water and other fluid transportation, mechanical structure and line pipe for oil and natural gas industry, which can meet various needs of customers for plumbing and welding.

Welded steel pipes have strong welding performance and good airtightness. The welding quality of welding steel pipe lies in a good melt welding and heat preservation treatment. Therefore, when welding steel pipes, it is necessary to prevent the oxidation of molten iron and the loss of fusion liquid during the welding process.

The production process of welded steel pipe is generally divided into two welding processes - electric welding and submerged arc welding. According to its cross-sectional shape, it can be divided into round welded pipe, square welded pipe and special-shaped welded pipe. According to different materials, it can be divided into carbon welded pipe, alloy welded pipe, high-pressure boiler welded pipe, alloy steel welded pipe, stainless steel welded pipe and other high-grade welded pipe.

The welded steel pipe is composed of a steel plate from a steel strip body and a weld. The material of the welded steel pipe is divided according to the national standard and the applied pressure is also different. According to the different wall thickness of the steel pipe, it is divided into three types: light wall thickness, medium wall thickness and heavy wall thickness. Welded steel pipe has many advantages, including low cost, high precision, convenience in production and installation, non-polluting environment and no need of inspection and maintenance.

It has a wide range of applications in industrial production and construction, such as pipe production of chemical and petroleum industry, auto parts manufacturing, railway vehicle manufacturing, steel structure construction, housing construction, pipe network construction, mineral water supply, gas transportation and so on. With the development of modern industry, the application of welded steel pipe is becoming more and more widespread. With its good corrosion resistance, abrasion resistance and low cost, welded steel pipe becomes an important pipe for industrial development.

Welded steel pipe has there main advantages: high pressure resistance, good toughness, corrosion resistance and strong vibration resistance. It also has excellent thermal insulation, environmental protection and energy saving performance. The pipe wall is smooth, it can be used with no internal or external rust-proof coating, and has high pressure bearing capacity.It is an ideal pipeline for transportation in factories, power plants, urban and rural districts.

Welded steel pipe is mostly used for water supply, gas transportation and various engineering projects. The production methods of high-frequency electrical resistance welding, submerged arc welding, furnace welding and molding can be used to produce welded steel pipes with different wall thicknesses, uses and materials.

Welded steel pipe is mainly used in construction, oil industry, chemical industry and other industries. When it is used for gas transportation, the best temperature and pressure range is 20℃~200℃ and 0.9~2.2MPa respectively. The production process of welded steel pipe has simple equipment, stable performance, easy operation, low cost and environmental protection, so it is increasingly used in cabin construction, municipal engineering, highway construction and agricultural and stock breeding industries.

In order to ensure the quality of welded steel pipe, the technology used in production and production should be constantly improved and improved. In the welding process, the welding parameters should be selected correctly and the welding process should be strictly controlled. In addition, the inspection of welded steel pipe should also be performed in accordance with regulations. Only by ensuring the quality of welded steel pipe, can the actual use effect be achieved.

Welded steel tubes (or pipes) are widely used in modern life, especially in architecture and construction. Welded steel tubes are a kind of round carbon steel pipes, which are made by bending and welding steel strips or steel plates.

Welded steel tubes are produced using a variety of welding technologies, depending on the application and the materials used. Arc welding is often used in the production of welded steel tubes because it is the most cost-effective way to join the two materials. During arc welding, an electric arc is used to melt the surfaces of the two pieces of material to be joined. After the two pieces of material have been successfully joined, the weld is then cooled and polished.

Welded steel tubes come in a variety of grades, sizes, and shapes, depending on the applications for which they are used. Commonly used grades for welded steel tubes include carbon, stainless steel, and alloy steel. The size of welded steel tubes is determined by the inner diameter and the wall thickness of the tube. The shape of the welded steel tubes can be customized to meet the needs of any application, including round, oval, square, and rectangular shapes.

Welded steel tubes are used in a range of applications, from structural to plumbing and general engineering to construction. The welded steel tubes are suitable for onshore and offshore applications, and are used in oil and gas, agriculture, water and wastewater, and many other industries.

The production of welded steel tubes is relatively easy and versatile as it does not require complicated tools and machineries. The production process is relatively quick and requires less labour. As the production of welded steel tubes does not require high temperatures, there is no risk of compromising the quality of the end product. The strength of the welded steel tubes is also higher than that of other materials, making them a preferred choice for many industrial applications.