ASTM A53 Seamless Steel Pipe smls tube
ASTM A53 Carbon Seamless Pipeline, smls
Certification： API
Grade： Gr.B
Out Diameter： 1/4" - 24" ( DN8 - DN600)
Thickness： 2.24-59.54mm
Length： 6M/12M or Customized
Ends： Plain/ Bevel/ Threaded/ Grooved
Usage：Water transfer pipes/ Oil pipes and Gas pipes
Surface： Bare/ Black/ Varnish/ Oiled/ Galvanized/ 3PE, etc
Grade： Gr.B
Out Diameter： 1/4" - 24" ( DN8 - DN600)
Thickness： 2.24-59.54mm
Length： 6M/12M or Customized
Ends： Plain/ Bevel/ Threaded/ Grooved
Usage：Water transfer pipes/ Oil pipes and Gas pipes
Surface： Bare/ Black/ Varnish/ Oiled/ Galvanized/ 3PE, etc
Quantity
ASTM A53 seamless steel pipe is intended for mechanical and low-pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. A53 carbon seamless tube 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 seamless pipe/smls tube is 1/4 to 26 inch and sch10 to sch160. A53 carbon seamless pipes can be welded, flanged and formed as required, and there are three main types ("S"seamless hot rolling and cold finishing).
Example Size
Note: Some of the main specifications are shown below, please contact us for more details.
| DN | Outside Diameter | Wall Thickness | Weight Class | Schedule | Test Pressure, psi | |
| Designator | mm | mm | No. | Grade A | Grade B | |
| 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 | ||
| 150 | 168.3 | 4.78 | - | - | 7 | 8.2 |
| 5.56 | - | - | 8.2 | 9.6 | ||
| 6.35 | - | - | 9.4 | 10.9 | ||
| 7.11 | STD | 40 | 10.5 | 13 | ||
| 7.92 | - | - | 11.7 | 13.7 | ||
| 8.74 | - | - | 12.9 | 15 | ||
| 9.52 | - | - | 14.1 | 16.4 | ||
| 10.97 | XS | 80 | 16.2 | 18.9 | ||
Seamless Steel Pipe Manufacturing 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.
