Carbon Steel Pipe Tolerance and Properties
Diameter – Steel Pipe Tolerance – Seamless And Welded
| Nominal Pipe Size Inches | Outside Diameter Tolerances-Inches Or Percent of O.D. | |||||||
|---|---|---|---|---|---|---|---|---|
| A120(1) | A53 | A106 | API-5L | |||||
| Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | |
| 1/8– 11/2 IPS | O.15″ | .031″ | .015″ | .031″ | .015″ | .031″ | .015″ | .031″ |
| 2-4 IPS | 1% | 1% | 1% | 1% | .031″ | .031″ | 1% | 1% |
| 5-8 IPS | 1% | 1% | 1% | 1% | .062″ | .031″ | .75% | .75% |
| 10 IPS-18 OD | 1% | 1% | 1% | 1% | .093″(2) | .031″(2) | .75% | .75% |
| 20 OD-26 OD | l% | 1% | 1% | 1% | .125″(2) | .031″(2) | 1% | 1% |
|
(1)Specification A120 has been discontinued. (2)Some mills may require ± 1% of nominal O.D. for sizes over 10í IPS in heavy walls of A 106 pipe.
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Wall – Steel Pipe Tolerances – Seamless
| Nominal Pipe Size Inches | Outside Diameter Tolerances-Inches Or Percent of O.D. | |||||||
|---|---|---|---|---|---|---|---|---|
| A120(1) | A53 | A106 | API-5L | |||||
| Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | |
| 1/8– 21/2 IPS | By Wt. | 12.5 | By Wt. | 12.5 | By Wt. | 12.5 | 20.0 | 12.5 |
| 3 IPS | By Wt. | 12.5 | By Wt. | 12.5 | By Wi. | 12.5 | 18.0 | 12.5 |
| 31/2 IPS-26 OD | By Wt. | 12.5 | By Wt. | 12.5(2) | By Wt. | 12.5(2) | 15.0 | 12.5 |
|
(1)Specification A120 has been discontinued. (2) Some mills may require ± 12.5% of nominal wall for sizes over 10″ IPS in heavy walls of A53 & A106 pipe.
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Wall – Steel Pipe Tolerances – Welded
| Nominal Pipe Size Inches | Outside Diameter Tolerances-Inches Or Percent of O.D. | |||||||
|---|---|---|---|---|---|---|---|---|
| A120(1) | A53 | A106 | API-5L | |||||
| Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | |
| 1/8– 21/2 IPS | By Wt. | 12.5 | By Wt. | 12.5 |
Available Only As Seamless Pipe |
20.0 | 12.5 | |
| 3 IPS | By Wt. | 12.5 | By Wt. | 12.5 | 18.0 | 12.5 | ||
| 31/2 IPS-18 OD | By Wt. | 12.5 | By Wt. | 12.5 | 15.0 | 12.5 | ||
| 20 OD-26 OD | By Wt. | 12.5 | By Wt. | 12.5 | 17.5 | 10.0 | ||
|
(1) Specification A120 had been discontinued.
|
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Weight – Steel Pipe Tolerances – Seamless & Welded
| Nominal Pipe Size Inches | Outside Diameter Tolerances-Inches Or Percent of O.D. | |||||||
|---|---|---|---|---|---|---|---|---|
| A120(1) | A53 | A106 | API-5L | |||||
| Plus | Minus | Plus | Minus | Plus | Minus | Plus | Minus | |
| Standard | 10 | 10 | 10 | 10 | 10 | 3.5 | 10 | 3.5 |
| Extra Strong | 10 | 10 | 10 | 10 | 10 | 3.5 | 10 | 3.5 |
| Dble Extra Strong | 10 | 10 | 10 | 10 | 10 | 3.5 | 10 | 3.5 |
|
(1)Specification A120 has been discontinued. (2)Pipe 4″ & under is weighted in conventional lifts, over 4″ in individual lengths.
|
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Steel Pipe Tolerance Typical Properties
| Grade Designation | Chemistry | Tensile KSI | Yield KSI | Elong. Percent In 2″ | ||||
|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | ||||
| A1068 Smls. | .30 max | .29-1.06 | .048 max | .058 max | .10 min | 60 min | 35 min | 30 min |
| A53B Smls. | .30 max | 1.20 max | .05 max | .06 max | – | 60 mm | 35 mm | 30 min |
| SLB Smls. | .27 max | 1.15 max | .04 max | .05 max | – | 60 min | 35 min | 30 min |
| A120 Weld. | No Values Specified |
No Values Specified |
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