Seamless steel pipes are steel pipes made of a whole round steel with holes and 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 pipes have a variety of complex shapes, such as square, oval, triangle, hexagon, melon seed, star, finned tubes, etc. Thick-walled seamless steel pipes and thin-walled seamless steel pipes are divided according to different uses.
First, the application of seamless steel pipes
1. The largest-volume ordinary carbon structural steel, low-alloy structural steel, or alloy structural steel is rolled and is mainly used as a pipe or general structure for conveying fluids.
2. According to different uses, it can be divided into three categories of supply:
(1) Chemical composition and mechanical properties
(2) Mechanical properties
(3) Water pressure test.
According to (1), (2), (3), if the steel pipes supplied are used to withstand liquid pressure, they should also be subjected to a water pressure test.
3. Special-purpose seamless steel pipes include seamless steel pipes for boilers, chemical applications, geology, and petroleum applications. Seamless steel pipes have a hollow cross-section and are widely used as pipelines for transporting fluids, such as oil, natural gas, coal gas, water, and some solid materials. Compared to solid steel, like round bar, steel pipes offer an economical cross-section with comparable torsional strength and reduced weight.
They are also widely used in the manufacture of structural and mechanical parts, such as oil drill pipes, automobile drive shafts, bicycle frames, and steel scaffolding for construction. They improve material utilization, simplify manufacturing processes, and save both material and processing time.
Second, what should you pay attention to when purchasing seamless steel pipes?
1. Purchase from a large, conventional steel pipe company. Reputable, large companies generally source from or are agents for well-known, large domestic seamless steel pipe companies, ensuring quality.
2. Check the product quality certificate and production license number issued by the seamless steel pipe manufacturer.
3. Choose the appropriate specifications, as seamless steel pipes used in different applications vary in specifications and functions. 4. Choose seamless steel pipes produced using different processes, as seamless steel pipes can be cold-rolled or hot-rolled. Different production processes result in different steel pipe characteristics and applications.
5. For seamless steel pipes of the same specification, refer to and compare them with those of different manufacturers. If the performance is significantly below average, do not purchase.
6. Observe the surface of the seamless steel pipes carefully; do not allow for defects such as cracks, scars, and folds.
7. Bulk purchases from manufacturers are preferred. If you want to wholesale seamless steel pipes, it is best to contact other manufacturers directly. After all, eliminating the need for intermediaries can provide certain benefits and save you money.
Threeway Steel is known as a professional supplier engaged in manufacturing and distributing a wide range of steel pipe, and our headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
