ASTM A53 Seamless Pipe
ASTM A53 pipe is intended for mechanical and low-pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. It is suitable for welding and for forming operations involving coiling, bending, and flanging, subject to certain qualifications.
The size range of ASTM A53/ASME SA 53 carbon pipe is 1/4 to 26 inch and sch10 to sch160.
A53 pipes can be welded, flanged and formed as required, and there are three main types (“S” seamless hot rolling and cold finishing).
Application for A53 Seamless Pipe
Hot-Rolling Pipe Production Process
Hot-rolled seamless steel tubes are one of the ways in which seamless steel tubes are produced, and are manufactured by the hot-rolling technique, which, as the name suggests, rolls at a high temperature, so that there is little resistance to deformation and large deformations can be achieved.
In contrast to cold rolling, hot-rolled seamless steel tubes are seamless steel tubes rolled above the recrystallisation temperature, whereas cold rolling is done at room temperature. The hot rolling process is usually used on larger diameter seamless steel tubes (above 38 mm). Smaller diameters of seamless steel tubes can be cold rolled or cold drawn.
Example Size
NPS Designator | DN Designator | Outside Diameter | Wall Thickness | Weight Class | Schedule No. | Test Pressure, psi | |
mm | mm | Grade A | Grade B | ||||
1/2″ | 15 | 21.3 | 2.77 | STD | 40 | 4.8 | 4.8 |
3.73 | XS | 80 | 5.9 | 5.9 | |||
4.78 | – | 160 | 6.2 | 6.2 | |||
7.47 | XXS | – | 6.9 | 6.9 | |||
6″ | 150 | 168.3 | 4.78 | – | – | 7.0 | 8.2 |
5.56 | – | – | 8.2 | 9.6 | |||
6.35 | – | – | 9.4 | 10.9 | |||
7.11 | STD | 40 | 10.5 | 13.0 | |||
7.92 | – | – | 11.7 | 13.7 | |||
8.74 | – | – | 12.9 | 15.0 | |||
9.52 | – | – | 14.1 | 16.4 | |||
10.97 | XS | 80 | 16.2 | 18.9 | |||
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