The Chrome Plated C20 Tube is a non-heat-treated hollow piston rod made from C20 low-carbon seamless steel tube, known for excellent weldability and good ductility. Available in OD φ25–300 mm, up to 8000 mm long, it features ISO f7 tolerance, a hard chrome layer of 850–1150 HV, welded hydraulic cylinders and fluid-passage applications, it offers full customization of dimensions, wall thickness, heat treatment and surface finishing.

The Carburized C20 Rod features a case-hardened surface of 58–64 HRC (effective depth 0.5–2.0 mm) with a tough low-carbon core (≤170 HB). Available in φ6–300 mm, up to 8000 mm long, it meets ISO f7 tolerance with a precision ground finish. Its “hard case, tough core” structure provides excellent wear and impact resistance for medium/low-pressure hydraulic cylinders and general industrial equipment. Full customization of dimensions, case depth and additional surface treatments is supported.