... -508mm WT: 1-60mm 3) ASTM , DIN, JIS, EN, API, BS Standard 4) SGS, VOC, BV, CE api 5l carbon steel pipeKEY ... Equipment Directive), API 5L, API 5CT, TS16949, DNV, KR 3) Standard: ASTM/ASME - A106, A53, A179, A192, A210(A1/C), A519 ... : For high, middle, low pressure boiler and pressure purpose Production Standard, Grade, Steel No: ASTM A178 Grade A, C, D ASTM ...