45# Precision Steel Tube is a high-precision steel material processed through cold drawing or cold rolling. Due to its lack of oxidation layer on the inner and outer walls and high precision, 45# Precision Tube is primarily used for manufacturing pneumatic or hydraulic components such as cylinders, which can be seamless. The chemical composition of precision steel tubes includes carbon (C), silicon (Si), manganese (Mn), sulfur (S), phosphorus (P), and chromium (Cr). The chemical composition of 45# Precision Steel Tube: It contains 0.42~0.50% carbon (C), 0.17~0.37% silicon (Si), 0.50~0.80% manganese (Mn), and <=0.25% chromium (Cr). Currently, we are mainly selling precision steel tubes nationwide with W(kg/m) = 0.02466 * wall thickness * (outer diameter - wall thickness). Features include non-oxidized inner and outer walls, high pressure resistance, no leakage, high precision, high luster, cold bending without deformation, no cracks during expansion or flattening, and surface anti-rust treatment. They are widely used in precision steel tubes for hydraulic systems, injection molding machines, hydraulic presses, steel ship manufacturing, EVA foam hydraulic machinery, seamless steel tubes for precision oil cutting machines, shoe-making machinery, hydraulic equipment, high-pressure oil tubes, hydraulic oil tubes, sleeve fittings, pipe joints, rubber machinery, forging machinery, die casting machinery, construction machinery, concrete pump trucks, waste collection vehicles, automotive industry, shipbuilding industry, metal processing, military industry, diesel engines, internal combustion engines, air compressors, construction machinery, agricultural and forestry machinery, etc. They can fully replace imported 45# Precision Steel Tubes of the same standard. We offer a complete range of specifications with guaranteed quality. Our steel tubes are used by machinery that requires high precision and luster, and current users not only demand high precision but also high luster. [1] Due to the high precision of bright seamless steel tubes, many machining users are gradually switching from seamless steel tubes or round steel to bright seamless steel tubes to save on labor, materials, and time. Our products are produced by top-quality manufacturers, offering reasonable supply prices.