Precision cold-drawn tube weight formula: [(outer diameter wall thickness)*wall thickness]*0.02466=kg/M (weight per meter), suitable for accuracy and flatness of automobiles, motorcycles, refrigeration equipment, hydraulic parts, cylinders, etc. Customers with higher requirements, the cleanliness and mechanical properties of steel pipes. Strict requirements are put forward for the mechanical properties of precision cold-drawn steel pipes, such as tensile strength, yield strength or yield point, and elongation. In addition to ensuring the mechanical properties, the chemical composition must also be guaranteed. Before leaving the factory, it must pass the hydrostatic test, crimping, flaring, flattening and other tests.
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