ASTM A193 specifies alloy and stainless steel bolting material for high-temperature and high-pressure service — the standard behind grades like B7, commonly specified for refinery, petrochemical, and pressure-vessel applications.
- Steel Grades
- B7, B7M, B8 (Stainless), B8M (Stainless)
- Finish
- Plain, Zinc Phosphate Coated