ASTM A313 – 1987 Chromium – Nickel Stainless and Heat-resisting Steel Spring Wire – ASTM A313 – 1987
multi-stranded wire spring
Stainless Steel Spring Wire
varied diameter of spring wire
Spring Force of Constant Torque Spring and Wing-up Spring
A Wire Contacts Earth， B Wire Contacts Battery
AC three phase three wire system with earthed hull as neutral wire
alternating current three phase three wire system with earthed hull as neutral wire
Brown and Sharpe wire gauge {= B&S wire gauge}