Chrome Plated 27SiMn Tube
The Chrome Plated 27SiMn Tube is a non-heat-treated hollow piston rod made from 27SiMn silicon-manganese alloy steel seamless tube, offering high strength and good toughness. Available in OD φ25–300 mm, up to 8000 mm long, it features ISO f7 tolerance, an 850–1150 HV hard chrome layer, and 96-hour salt spray rating 9. Ideal for ultra-high-pressure, heavy-duty or fluid-passage hydraulic cylinders, it supports full customization of dimensions, wall thickness, heat treatment and surface finishing.