Q: What is the key application difference between ASTM A53 and A106?
A: ASTM A106 is specifically for high-temperature service (up to ~750°F / 400°C), while A53 is for general pressure and mechanical applications at ambient temperatures.
Q: Does ASTM A106 cover welded pipe?
A: No, ASTM A106 covers seamless carbon steel pipe only.
Q: What are the three grades of ASTM A106 pipe?
A: Grade A, Grade B, and Grade C. Grade C has the highest strength and carbon content.
Q: Why is ASTM A106 preferred for refinery and power plant piping?
A: Because of its seamless construction and chemical/mechanical properties tailored to withstand pressure and stress at elevated temperatures.
Q: What is the specified heat treatment for ASTM A106 Grade B?
A: It can be supplied as-hot rolled or heat-treated (normalized, normalized and tempered, or stress-relieved) as specified by the purchaser.
