Seamless steel pipes with the largest output rolled from ordinary carbon structural steel, low alloy structural steel or alloy structural steel and mainly used as pipelines for conveying fluids or general structures.
Seamless steel pipe is a steel pipe that is perforated by a whole round steel and has no welds on the surface. According to the cross-sectional shape, seamless steel pipes can be divided into round and special-shaped pipes. Special-shaped tubes include square, oval, triangle, hexagon, melon-shaped, star-shaped, finned tubes and other complex shapes. Thick-walled seamless steel pipes and thin-walled seamless steel pipes are divided into different uses.
Applications of seamless steel pipes
1. Seamless steel pipes with the largest output rolled from ordinary carbon structural steel, low alloy structural steel or alloy structural steel and mainly used as pipelines for conveying fluids or general structures.
2. It can be divided into three categories of supply according to different uses: (1) Chemical composition and mechanical properties (2) Mechanical properties (3) Hydrostatic test. Steel pipes supplied under (1)(2)(3), if used to withstand liquid pressure, shall also be hydrostatically tested.
3. Special purpose seamless steel pipes include seamless steel pipes for boilers, seamless steel pipes for chemicals, seamless steel pipes for geology and seamless steel pipes for petroleum. Seamless steel pipes have hollow sections and are widely used as pipelines for transporting fluids, such as pipelines for transporting oil, natural gas, coal gas, water and some solid materials. Compared with solid steel such as round steel, steel pipe is an economical cross-section steel with the same torsional strength and lighter weight. It is also widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames and construction steel scaffolding. It can improve material utilization, simplify the manufacturing process, and save materials and processing time.
What should you pay attention to when buying seamless steel pipes?
1. Purchased from a large conventional steel pipe company. Regular large companies generally purchase or act as agents from well-known domestic large-scale seamless steel pipe companies, and the quality is guaranteed.
2. Check the product quality certificate issued by the seamless steel pipe manufacturer and the certificate number for the implementation of production license management.
3. Choose appropriate specifications, because seamless steel pipes used in different fields have different specifications and different functions.
4. Choose seamless steel pipes with different processes, because seamless steel pipes can be divided into cold rolling and hot rolling. Different production processes have different steel pipe characteristics and different application fields.
5. For seamless steel pipes of the same specifications, different manufacturers can refer to them and compare them repeatedly. If it's far below the average, you can't buy it.
6. Pay attention to the observation that the surface of the seamless steel pipe is not allowed to have cracks, scars, folds and other defects.
7. Bulk purchasing from manufacturers is the first choice. If you want to wholesale seamless steel pipes, it is best to go directly to other manufacturers. After all, you can still enjoy certain benefits without the need for intermediate links, and you can also save more expenses.
