Pipe Grades & Standards
We supply JIS and ASTM grades with mill test certificates for full traceability.
JIS G3445 STKM
Mechanical carbon steel pipe (STKM 11A–18A) for structural and machine parts.
JIS G3454 STPG
Carbon steel pipe for pressure and general piping (STPG 370/410).
ASTM A53 Grade B
Welded carbon steel pipe for structural and line service.