| WALL TOLERANCES | ASTM A 120 | ASTM A 53 | ASTM A 106 | API 5L | |||||||
| Same as ASTM A 106 | Same as ASTM A 106 | Minimum wall thickness at any point shall be not more than 12.5% under nominal wall specified | SEAMLESS | ||||||||
| Plus | Minus | ||||||||||
| 2-7/8” and smaller | 20% | 12-1/2% | |||||||||
| 3-1/2” | 18% | 12-1/2% | |||||||||
| 4” and larger | 15% | 12-1/2% | |||||||||
| 20% | 12-1/2% | ||||||||||
| WELDED | |||||||||||
| Plus | Minus | ||||||||||
| 2-7/8” and smaller | 20% | 12-1/2% | |||||||||
| 3-1/2” | 18% | 12-1/2% | |||||||||
| 4” thru 18” | 15% | 12-1/2% | |||||||||
| 20” and larger | 17-1/2% | 10% | |||||||||
CHEMISTRY
| ASTM A 120 | ASTM A 53 | ASTM A 106 | API 5 L | |||||||||||||
| No specific chemical requirements listed except that for steel welded pipe shall be of soft weldable quality | Carbon % Max. | Mn. % Min. | Mn. % Max. | Phos. % Min. | Phos. % Max. | S % Max. | ||||||||||
| SEAMLESS | ||||||||||||||||
| Carbon % Max. | Mn. % Max | Phos. % Max | S % Max. | Grade A | 0.22 | — | 0.90 | — | 0.040 | 0.05 | ||||||
| SEAMLESS (Type S) Open hearth, electric furnance, or basic oxygen | Grade B | 0.27 | — | 1.15 | — | 0.040 | 0.05 | |||||||||
| Grade A | 0.25 | 0.95 | 0.05 | 0.06 | Grade A | Grade B | Grade A25, Cl.1 | 0.21 | 0.30 | 0.60 | — | 0.045 | 0.06 | |||
| Grade B | 0.30 | 1.20 | 0.05 | 0.06 | Carbon Max. | 0.25% | 0.30% | Grade A25, Cl.11 | 0.21 | 0.30 | 0.60 | 0.045 | 0.080 | 0.06 | ||
| ELECTRIC WELDED (Type E) Open hearth, electric furnance, or basic oxygen | Manganese | 0.27/0.93% | .029/1.06% | ELECTRIC WELDED | ||||||||||||
| Grade A | 0.25 | 0.95 | 0.05 | 0.06 | Phosph., Max | 0.048% | 0.048% | Grade A | 0.21 | — | 0.90 | — | 0.040 | 0.05 | ||
| Grade B | 0.30 | 1.20 | 0.05 | 0.06 | Sulphur, Max. | 0.058% | 0.058% | Grade B | 0.26 | — | 1.15 | — | 0.040 | 0.05 | ||
| BUTT WELDED (Type F) Open hearth, electric furnance, or basic oxygen | Silicon, Min | 0.010% | 0.10% | Grade A25, Cl.1 | 0.21 | 0.30 | 0.60 | — | 0.045 | 0.06 | ||||||
| — | — | 0.08 | 0.06 | Grade A25, Cl.11 | 0.21 | 0.30 | 0.60 | 0.045 | 0.080 | 0.06 | ||||||
| BUTT WELDED | ||||||||||||||||
| Grade A25, Cl.1 | 0.21 | 0.30 | 0.60 | — | 0.045 | 0.06 | ||||||||||
| Grade A25, Cl.11 | 0.21 | 0.30 | 0.60 | 0.045 | 0.080 | 0.06 | ||||||||||
| ASTM A 106 | Grade A | Grade B | ||||||||||||||||
| Carbon, Max. | 0.25% | 0.30% | ||||||||||||||||
| Managanese | 0.27/0.93% | .029/1.06% | ||||||||||||||||
| Phosph., Max. | 0.048% | 0.048% | ||||||||||||||||
| Sulphur, Max. | 0.058% | 0.058% | ||||||||||||||||
| Silicon, Min. | 0.010% | 0.10% | ||||||||||||||||
| API 5L | ||||||||||||||||||
| SEAMLESS | ||||||||||||||||||
| Carbon % Max. | Mn. % Min. | Mn. % Max. | Phos. % Min. | Phos. % Max. | S % Max. | |||||||||||||
| Grade A | 0.22 | — | 0.90 | — | 0.040 | 0.05 | ||||||||||||
| Grade B | 0.27 | — | 1.15 | — | 0.040 | 0.05 | ||||||||||||
| Grade A25, Cl.1 | 0.21 | 0.30 | 0.60 | — | 0.045 | 0.06 | ||||||||||||
| Grade A25, Cl.11 | 0.21 | 0.30 | 0.60 | 0.045 | 0.080 | 0.06 | ||||||||||||
| ELECTRIC WELDED | ||||||||||||||||||
| Grade A | 0.21 | — | 0.90 | — | 0.040 | 0.05 | ||||||||||||
| Grade B | 0.26 | — | 1.15 | — | 0.040 | 0.05 | ||||||||||||
| Grade A25, Cl.1 | 0.21 | 0.30 | 0.60 | — | 0.045 | 0.06 | ||||||||||||
| Grade A25, Cl.11 | 0.21 | 0.30 | 0.60 | 0.045 | 0.080 | 0.06 | ||||||||||||
| BUTT WELDED | ||||||||||||||||||
| Grade A25, Cl.1 | 0.21 | 0.30 | 0.60 | — | 0.045 | 0.06 | ||||||||||||
| Grade A25, Cl.11 | 0.21 | 0.30 | 0.60 | 0.045 | 0.080 | 0.06 | ||||||||||||
| PHYSICAL PROPERTIES | ||||||||||||||||||
| ASTM A 120 | No physical properties specified | |||||||||||||||||
| ASTM A 53 | ||||||||||||||||||
| FURNACE WELDED (Butt Welded) | ||||||||||||||||||
| Open hearth Basic Oxygen or Electric Furance | ||||||||||||||||||
| Tensile Strength | ||||||||||||||||||
| Min. psi | 45,000 | |||||||||||||||||
| Yield Strength | ||||||||||||||||||
| Min. psi | 25,000 | |||||||||||||||||
| SEAMLESS or ELECTRIC WELDED | ||||||||||||||||||
| Grade A | Grade B | |||||||||||||||||
| Tensile Strength | ||||||||||||||||||
| Min. psi | 48,000 | 60,000 | ||||||||||||||||
| Yield Strength | ||||||||||||||||||
| Min. psi | 30,000 | 35,000 | ||||||||||||||||