Product Name High Carbon Cold Rolled Steel Strips for saw blade Free Sample Material CK50, CK55, CK60, CK67, CK75, CK80, CK95, 50CrV4, 60Si2Mn, 3Cr13 and etc Color blue polished, polished-bright, white, blue, yellow, etc. Technique cold rolled, annealed, heat treatment with hardened and tempered Hardness 44-48 HRC Edge Rounded, Slitted Application band spring, rolling door spring, rolling shutter spring, rolling shutter accessories Package each bundle with light oil and plastic film then wrapped in anti-rust paper with metallic pallet
