We are a manufacturer specializing in exporting various steel strip. We accordingly make the following offer:
1) Width:40mm to 240mm 2) Thickness: 0. ... Explore More
Rolling door spring steel strip Description
1. Material: 65Mn,C50, Sk5,CK67 etc.
2. Finished: hot tempered and hardened, black or blue finished
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1. Hot rolled, Pre-harden &tempering, black surface
2. Hardness: 30~36HRC
3. Hot rolled technology: EAF+LF+VD
4. Production leadtime: 7~15 da ... Explore More