Pressure vessel rounds require strict safety compliance:
ASTM A519 (U.S.): Covers seamless carbon and alloy round bars for high-pressure service, mandating tensile testing at 300°C and ultrasonic inspection for defects >3% of wall thickness. Grades include 1026 and 4130.
EN 10216-2 (Europe): Specifies pressure vessel rounds (e.g., P265GH, 16Mo3) with creep testing at 400°C for 1,000 hours. It limits sulfur to <0.035% to prevent embrittlement.
JIS G3454 (Japan): Governs STPG370 and STPT410 round bars for boilers, requiring Charpy impact testing at -10°C for low-temperature service.
Common requirements include heat treatment to relieve stresses and traceability from melt to finished product, critical for applications like oil refinery reactors and steam turbines.