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 | ||||||||||||||||