Cold Drawn Seamless Pipe

Cold drawn seamless steel pipe is a precision cold drawn seamless pipe with high dimensional accuracy and good surface finish used in mechanical structures and hydraulic equipment. The use of seamless steel pipes to manufacture mechanical structures or hydraulic equipment can greatly save machining hours, improve material utilization, and at the same time help improve product quality.

If you want to obtain small-diameter seamless steel pipes with smaller size and better quality, you must use cold rolling, cold drawing or a combination of the two. Cold rolling is usually carried out on a two-roll mill, and the steel pipe is rolled in an annular pass composed of a variable cross-section circular groove and a fixed conical head. Cold drawing is usually performed on a 0.5 to 100T single-chain or double-chain cold drawing machine.

High-quality carbon structural steel cold-drawn seamless pipes are mainly made of No. 10, No. 20, No. 35, and No. 45 steel. In addition to ensuring the chemical composition and mechanical properties, hydrostatic testing, curling, flaring, flattening, etc. test.

• High Strength and Durability: Cold rolled seamless steel pipes exhibit high strength and hardness, allowing them to withstand greater pressure and weight. This makes them ideal for high-pressure, high-temperature, and high-strength environments, such as oil and natural gas pipelines and transmission shafts in machinery manufacturing.

• Good Processing Performance: These pipes are easy to cut, weld, and bend, making them versatile for various processing operations. They can be fabricated into pipes of different shapes and sizes to meet specific engineering needs. The manufacturing process is relatively simple and cost-effective, which supports large-scale production.

• Economical and Cost-Effective: Compared to seamless pipes made from stainless steel, alloy steel, or other high-performance materials, seamless carbon steel pipes are more affordable. They offer a higher cost-efficiency, making them a great choice for applications where corrosion resistance is not a primary concern, helping to reduce overall project costs.

• Good Thermal Conductivity: Carbon steel has excellent thermal conductivity, making it well-suited for applications requiring efficient heat transfer, such as heat exchangers, boilers, and other industrial equipment. This enhances energy efficiency by effectively transferring heat.

Round tube → heating → perforation → Heading → annealing → pickling → oiled (copper) → multi-pass cold drawn (cold rolled) → blank tube → heat treatment → straightening →hydrostatic testing (testing) → mark → storage.

• Machinery Manufacturing: These tubes are extensively used in manufacturing components such as transmission shafts, gears, and reducers.

• Automotive Components: In the automotive industry, cold-drawn seamless steel tubes are used in critical parts like the chassis, exhaust systems, and braking systems.

• Aerospace: The aerospace industry relies on cold-drawn seamless steel tubes for manufacturing key components such as engines and fuselage parts.

• Petrochemical Industry: These tubes are used in pipelines for transporting oil, natural gas, and other fluids. Their corrosion resistance and ability to withstand high temperatures ensure the stable operation of petrochemical facilities.

• Hydraulic Systems: Cold-drawn seamless steel tubes are ideal for hydraulic cylinders and lines due to their ability to withstand high pressure. Their precise dimensions and smooth surface finish are crucial for the efficient operation of hydraulic systems.

• General Industrial Use: Cold-drawn seamless steel tubes are also used in general industrial applications where high tolerance and surface smoothness are required. They can be found in a variety of equipment and machinery.