금속 강판 재질에 대한 비교 Sales Items Description Specification Hot Rolled Steel (HR-Black & P/O) Hot Rolled Steel Sheet & Coil for general purpose, deep drawing and automobile structural use. JIS G3101 SS400/SS490 JIS G3131 SPHC/SPHD/SPHE JIS G3113 SAPH310/370/400/440 JIS G3134 SPFH490/540/590 Cold Rolled Steel (CR) Cold Rolled Steel Sheet & Coil for general purpose, deep drawing q..