Special-shaped Springs For Farm Machinery Parts springs for downlights spring for down lighting springs for swing chair SpecificationsSpecial-shaped Springs For Farm Machinery Parts 1.materials:alloy,steel,etc. 2.wire dia:0.01 to 20mm 3.usage:IndustriaSpecial-shaped Springs For Farm Machinery Parts Specification1.made of carbon steel,stainless steel, manganese steel wire, nickel wire, galvanized ...