Coil sleeve is to reel stainless sheet to the coil in STS CRM Line, and made by centrifugal casting
 ● Features : Made with high tensile steel (over 150kg T.S)
                   Made by centrifugal or sand casting method
 ● Material : Ni-Cr-Mo Steel (similar to SCNCrM2 per JIS)
 ● Chemical Composition : C - 0.24~0.26 / Si - 0.35-0.40 / Mn - 0.95~1.10 / P - 0.04
                                       S - 0.03 / Ni - 1.70~1.85 / Cr - 1.00~1.20 / Mo - 0.30~0.50
 ● Mechanical Properties : TS - 140kg/㎟↑ / YP : 100kg/㎟↑ / EL : 6.3%↑ / RA : 13.8↑
                                      HS - 60~70 / IP : 22J/㎠
 ● Size : Length - 1,000㎜ / 1,300㎜ / 1,600㎜ / etc.
             Thickness - 100T / 200T / etc.

 Located in Pohang, South Korea, DONGJOO specializes in the production of cast steel, cast iron, and precision machinery products for the steel, mining, and cement industry. Since the company was established in 1989, DONGJOO has been expanding the business, our foundry and machine shop were relocated to larger facilities in 1996 and 2006. A research center was established in 2016. DONGJOO stands out in providing the entire process in our own in-house facilities from casting to precision machining, installation, through which we provide our customers around the world with competive pricing and the highest quality products.