changshu huibo railway fastener co.,ltd
railway track material, fastener, Insulator/Dowels/Ferrule, Rail track material, base plate/rail pads, Manufacturer and Supplier - China(CN)
Spring Washers (HB13)
material: 55si2Mn, 60si2Mn, spring steel bars
wL20, WL24, Wl22
Rockwell hardness 42-50
Spring washer is usually supplied in natural black finish unless otherwise specified. At the request of customer we offer:phosphate coated, electro-galvanized, cadmium plated, zinc plated