Cold-Rolled Seamless Steel Pipe

Cold-rolled Seamless Steel Pipe is made by Cold rolling process and is a kind of high-precision seamless pipe. Among the core pipe materials of precision machinery and hydraulic equipment, cold-rolled seamless steel pipes can be seen everywhere. With its outstanding precision performance, it has become a common choice in fields such as automotive manufacturing and aerospace, which have high requirements for size and surface quality.

The outer diameter tolerance of steel pipes is usually within ±0.1mm, and the wall thickness tolerance is approximately ±0.05mm, which can meet the needs of high-precision mechanical processing and assembly. The surface finish is excellent. The cold rolling process endows the inner and outer surfaces with a mirror-like smooth effect. The product has a low roughness, which can help reduce the resistance of fluid transportation while improving the transmission efficiency. High strength and toughness are another advantage of it. Cold-rolling deformation refines the internal grains of steel, thereby enhancing its strength and toughness, enabling it to withstand greater pressure and impact loads. Cold War seamless steel pipes also have excellent processing performance. Cutting, welding, bending and forming operations are all very convenient, making them suitable for the manufacturing of complex parts and high-precision piping requirements.

The production process of cold-rolled Seamless Steel Pipe mainly includes three links: Cold rolling, intermediate treatment and finished product inspection. Cold rolling is carried out at room temperature through reciprocating rolling by a rolling mill, gradually reducing the diameter and wall size to control dimensional accuracy and surface quality. The intermediate treatment stage can be annealing or pickling as needed to optimize the performance and surface condition of the pipe material. Finished product inspection strictly examines dimensions, mechanical properties and surface quality to ensure that the products meet relevant standards and customer requirements.

The product complies with a number of common execution standards, including GB/T 8163-2018 "Seamless Steel Tubes for Fluid Conveyance", GB/T 17395-2008 "Dimensions, shapes, Weights and Tolerances of Seamless Steel tubes", ASTM A53/A53M "Seamless and Welded Steel Tubes", and EN 10217-1 "Welded Steel Tubes". The product specifications cover an outer diameter of 4.0450mm, a wall thickness of 0.0460mm, and a length typically ranging from 3 to 12 meters. If you have any needs, you can also send us the drawings, and our team will customize them according to your requirements.