Question: what is the difference between grade a and grade b pipe?
Answer: Grade in A, B and C. ASTM A106 Grade A: Maximum Carbon element 0.25%, Mn 0.27-0.93%. Minimum tensile strength 48000 Psi or 330 Mpa, yield strength 30000 Psi or 205 Mpa. A106 Grade B: Maximum C below 0.30%, Mn 0.29-1.06%.