Compression Springs
Black wire compression spring (300mm domestic 65Mn)
Dingli Spring offers black compression springs made from domestically produced 65Mn spring steel, featuring round cross-section wire and standard 300mm length. The surface treatment includes blackening (black phosphating) with blackening and oiling for corrosion resistance. Key selling points: domestic 65Mn spring steel, 300mm length, full size range, material quality guaranteed, custom orders supported, wholesale pricing even for single units, high temperature resistance, excellent toughness, and fatigue resistance. Direct from manufacturer · Custom manufacturing supported · 30 years of spring manufacturing experience, B2B inquiries responded to on the same day.
