We adopt TORCH brand 4# Zinc alloy die-casting for faceplate, grip handle, thumb button and turn knob. It has very good rust and corrosion resistance, high hardness.Stainless stel for casing, strong and durable.
Zinc alloy die-casting
Mortise lock body
Stainless steel 304
ANSI Grade 2
AN, DAB, DAC, OAC, ORB, SG
Wood door, metal door
31-40mm, 41-50mm, 51-59mm, 60-71mm
Entrance, dummy, two-open door
According to the authoritative testing reports, brass-made assembles were damaged badly after 800,000 cycles, but investment-casting stainless steel-made assemblies remain good condition after 1,200,000 cycles.
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