Square Spring Steel Wire90
The material of square spring steel wire produced by our company includes martensite, austenite, duplex, ferritic stainless steel, etc. the series are 304, 316, 316L, 347h, 430, 430F, 410, 420, s32760, S32750, s32707, 2205, etc. the diameter is generally 0.018-14.0mm or customized, the tensile stren