Extension Coil Spring (SWP-A)

Standardized product made of piano wire or stainless steel wire for general-purpose cold moldingbr>
[Features]
· Standardized tensile coil spring made of piano wire (φ 0.32 mm to φ 2.3 mm in diameter) or stainless steel wire (φ 0.32 mm to φ 2.3 mm in diameter) for cold molding in general use.
· Piano wire: 180°C to 250°C Low temperature annealing, Black oxide finish surface.
· Stainless steel wire for spring: 250°C to 450°C Low temperature annealing. No surface treatment