반제품 용도 종류의 기호 호칭치수
빌렛
BILLET
일반구조용 압연강재 SS275(SS400), SS410 120×120
130×130
150×150
165×165
185×185
180×220
철근콘크리트용 봉강 SD300, SD400, SD500, SD400W, SD500W
용접구조용 압연강재 SM275A/B, SM355A/B
기계구조용 탄소강재 SM20C, SM45C
선체구조강재 Grade A, A(H)32/36
라운드빌렛
ROUND BILLET
Boiler & Heat exchanger A213, A106B, A179, A192 ¢150
¢200
Automotive STKM11A~20A, S10C~S58C, SCr415~SCr440
Bearing Tube SUJ2
Piping & Fitting A106B, A192
Mechanical SAE1020, 1026, 4130, 4140, 1536
OCTG API 5CT J55, K55, P110, Q110, API 5L A, B, X42, X46, X52, X60