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. | |
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Hydrostatic Testing
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| 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. |
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| 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. |
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| Refer to ASTM A53 Table X 2.2 | |
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Permissible Variations in Weights Per Foot
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| 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 |
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1-1/2″ and smaller
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1/64″
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1/64″
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Other sizes and dimensions may
be furnished |
2 and larger
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1%
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1%
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Permissible Variations in Wall Thickness
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| 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. |
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Chemical Requirements
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| Composition, max. percent | |||||
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C
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Mn
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P
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S
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| Types S and E | |||||
| Grade A |
0.25
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0.95
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0.05
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0.045
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| Grade B |
0.30
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1.20
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0.05
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0.045
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| Type F |
—
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—
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0.06
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0.045
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Tensile Requirements
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Tensile Strength
min, psi |
Yield Point
min, psi |
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| Types S and E | |||
| Grade A |
48,000
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30,000
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| Grade B |
60,000
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35,000
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| Type F |
48,000
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30,000
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| Table lists minimum elongation values calculated by the equation: e=625,000 A0.2 /U0.9 |
PIPE SPECIFICATIONS
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Mechanical Tests Specified |
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| 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 |
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| 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. |
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| Other sizes and dimensions may be furnished | FLATTENING TEST Required on sizes over 2 inch in nominal diameter in wall thickness, XS and lighter |