1. What is A671 CC65 Class30 Pipe?
A manufactured under ASTM A671 standard, specifically:
: CC65 (chemical composition and mechanical properties defined).
: 30 (designates pressure rating and testing requirements).
low-temperature service (e.g., -20℃F to +100℃F).
2. Key Material Properties?
: ~0.30% max (CC65 grade).
: >=65 ksi (448 MPa).
: Required for Class 30 (ensures toughness at low temps).
3. Common Applications?
: Pipelines in cold environments.
: Low-pressure steam lines.
: Non-critical supports.
4. How Does It Differ from A672?
A671: Electric-fusion welded pipes for atmospheric/low-temp use.
A672high-pressure services (e.g., Class 22=higher PSI).
5. Testing & Certification Requirements?
: Mandatory (1.5x design pressure).
: Optional for Class 30 (e.g., radiography if specified).
: Mill Test Reports (MTRs) provided.
