ASTM A312 is a standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes. It is used in high-temperature and general corrosive service. This specification covers a wide range of pipe sizes and dimensions, and it includes specific size tolerances to ensure the pipes meet the required standards. The size tolerances for ASTM A312 steel pipes are typically outlined as follows.
ASTM A312 Steel Pipe Size Tolerance Table:
| Standard | Out diameter (mm) | Wall thickness (mm) | Length (mm) | |
| ASTM A312 | ≤48.26 | +0.40 -0.80 | +(Unspecified)-12.50% | Definite cut length
+6.40 -0 |
| ＞48.26~114.30 | +0.80 -0.80 | |||
| ＞114.30~219.08 | +1.60 -0.80 | |||
| ＞219.08~457.20 | +2.40 -0.80 | |||
| ＞457~660 | +3.20/-0.80 | |||
| ＞660~864 | +4.00/-0.80 | |||
| ＞864~1219 | +4.48/-0.80 | |||
Note that the tolerances for ASTM A312 steel pipes may vary depending on the manufacturer, customer requirements, and the edition of the ASTM A312 standard in use. To ensure accuracy, refer to the latest version of the ASTM A312 standard and consult the manufacturer or supplier for the most up-to-date size tolerances for the pipes you require.
Post time: Dec-26-2023