PIPE SPECIFICATIONS
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Scope |
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| A106
1/8″ – 26″ |
Covers SEAMLESS nominal size and wall pipe for high-temperature service, suitable for bending, flanging, and similar forming operations. |
| STD, XS AND | |
| XXS ANSI B36.10 |
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| Heat treated cold drawn pipe may be furnished to this specification. Optional supplementary requirements may be specified when pipe 8 inch and larger is intended for use where a superior grade is required. | |
| Other sizes and dimensions may be furnished | |
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Hydrostatic Testing
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| Hydrostatic test pressures are calculated using the Barlow formula. Each pipe shall be tested to 60 percent of specified minimum yield strength, but not exceeding 2500 psi for 3 inch nominal size or smaller, or 2800 psi for sizes over 3 inch. | |
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Permissible Variations in Weights Per Foot
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| Pipe shall not vary more than 6.5 percent over and 3.5 percent under weights shown in ANSI B36.10. | |
| Sizes 4 inch and smaller are weighed in convenient lots. Pipe in sizes larger than 4 inch is weighed separately. | |
PIPE SPECIFICATIONS
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Permissible Variations in OD |
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| A106 | OUTSIDE DIAMETER shall not exceed variations as listed below: | ||
| 1/8″ – 26″ |
Nominal Pipe Size |
Over, Inch |
Under, Inch |
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| STD, XS and XXS ANSI B36.10 Other sizes and
dimensions may be furnished |
1/8 to 1-1/2, incl
Over 1-1/2 to 4, incl Over 4 to 8, incl Over 8 to 18, incl Over 18 to 26, incl |
1/64 (0.015)
1/32 (0.031) 1/16 (0.062) 3/32 (0.093) 1/8 (0.125) |
1/64 (0.015)
1/32 (0.031) 1/32 (0.031) 1/32 (0.031) 1/32 (0.031) |
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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
max. |
Mn
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P
max. |
S
max. |
Si
min. |
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| Grade A |
0.25
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0.27/0.93
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0.035
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0.035
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0.10
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| Grade B |
0.30
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0.29/1.06
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0.035
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0.035
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0.10
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| Grade C |
0.35
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0.29/1.06
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0.035
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0.035
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0.10
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Tensile Requirements
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Tensile Strength
min, psi |
Yield Point
min, psi |
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Grade A
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48,000
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30,000
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Grade B
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60,000
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35,000
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Grade C
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70,000
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40,000
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| Table lists minimum elongation values. | |||
PIPE SPECIFICATIONS
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Mechanical Tests Specified |
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| A106
1/8″ – 26″ |
TENSILE TEST Required on all sizes. |
| STD, XS AND XXS ANSI B36.10 |
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| BEND TEST Required on sizes 2 inch and smaller. 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. |
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