PIPE SPECIFICATIONS
Scope
| A53 1/8″ – 26 | Covers BLACK and hot-dipped GALVANIZED WELDED and SEAMLESS nominal size and wall pipe suitable for welding and for coiling, bending, flanging, and other forming operations. |
| STD, XS AND XXS | |
| ANSI B36.10 | |
| Continuous weld pipe is not intended for flanging (using pipe wall to form flange). | |
| Other sizes and dimensions maybe furnished | Seamless and electric-resistance weld pipe may be specified in grades A or B. |
| Order should specify when pipe is required for close coiling. | |
Hydrostatic Testing | |
| Prescribes hydrostatic test pressures for continuous weld pipe and for seamless and electric resistance weld pipe. Provision is made for test pressures not to exceed 2500 psi for pipe 3 inch and under or 2800 psi for pipe over 3 inch. | |
| Each length of pipe must be tested at the producing mill. Welded pipe 2 inch and larger is jarred near one end whileunder test pressure. | |
| Refer to ASTM A53 Table X 2.2 | |
Permissible Variations in Weights Per Foot | |
| For XS and lighter wall thicknesses | |
| Pipe shall not vary more than plus or minus 5 percent from weights shown in tables and included in ANSI B36.10. | |
| For walls heavier than XS | |
| Pipe shall not vary more than plus or minus 10 percent from weights shown in tables and included in ANSI B36.10. | |
| Sizes 4 inch and smaller weighted in customary mill lifts. On larger sizes, weight tolerance is applicable to individual lengths. | |
PIPE SPECIFICATIONS
Permissible Variations in OD
| A53 | OUTSIDE DIAMETER at any point shall not vary more than: | ||
| 1/8″ – 26″ STD, XS and XXS ANSI B36.10 | Nominal Pipe Size | Over | Under |
1-1/2″ and smaller | 1/64″ | 1/64″ | |
Other sizes and dimensions may be furnished | 2 and larger | 1% | 1% |
Permissible Variations in Wall Thickness |
| Minimum wall thickness at any point shall not be more than 12.5 percent under nominal wall thickness specified. Specification contains a table of minimum wall thicknesses on inspection calculated as 0.875 x nominal wall. |
Chemical Requirements | |||||
| Composition, max. percent | |||||
C | Mn | P | S | ||
| Types S and E | |||||
| Grade A | 0.25 | 0.95 | 0.05 | 0.045 | |
| Grade B | 0.30 | 1.20 | 0.05 | 0.045 | |
| Type F | — | — | 0.06 | 0.045 | |
Tensile Requirements | |||
Tensile Strength min, psi | Yield Point min, psi | ||
| Types S and E | |||
| Grade A | 48,000 | 30,000 | |
| Grade B | 60,000 | 35,000 | |
| Type F | 48,000 | 30,000 | |
| Table lists minimum elongation values calculated by the equation: e=625,000 A0.2 /U0.9 |
PIPE SPECIFICATIONS
Mechanical Tests Specified | |
| A53 1/8″ – 26 | TENSILE TEST Required on all sizes. Tests on welded pipe 8 inch and larger shall be from transverse specimen. |
| STD, XS AND XXS ANSI B36.10 | |
| BEND TEST Required on sizes 2 inch and smaller, except XXS over 1-1/4 inch. Pipe shall stand cold bending through 90 degrees around a mandrel with a diameter twelve times the nominal diameter of the pipe without cracking. If for close coiling bend shall be 180 degrees around diameter eight times the nominal diameter of pipe. | |
| Other sizes and dimensions may be furnished | FLATTENING TEST Required on sizes over 2 inch in nominal diameter in wall thickness, XS and lighter |