ASTM A53 Grado A
TUSPIPE supplies ASTM A53 Grade A pipes fully certified to meet the A53 mechanical and chemical requirements. This guarantees stable performance for low-pressure and structural applications, giving customers reliable quality from the start.
ASTM A53 Grado A
ASTM A53 Grade A pipe (also known as an ASME SA53 pipe) is intended for mechanical and pressure applications, although it may also be used in general in steam, water, gas, and airlines. It is suitable for welding as well as shaping operations like coiling, bending, and flanging under certain circumstances.
ASTM A53 es una de las normas de la Sociedad Americana de Pruebas y Materiales. ASTM A53 Grade A welding and coverings are best done with a pipe. Seamless and welded nominal (average) wall pipe in black and hot-dipped galvanized for coiling, bending, flanging, and other particular operations. The continuous-welded pipe should not be flanged. On the order, the purpose for which the pipe is designed should be indicated.
¿Por qué elegir tuspipe?
Desde 1998, Tianjin United Steel Piping Co., Ltd (TUSPIPE) se ha comprometido a suministrar tubos de línea de alta calidad.
Con más de 500.000 toneladas de capacidad de producción anual, la empresa presta servicio a diversos campos e industrias, como la explotación y transmisión de petróleo y gas, la construcción naval y de automóviles, el agua y la electricidad, la protección del medio ambiente, la ingeniería mecánica, la construcción de infraestructuras, etc.
TUSPIPE da mucha importancia a la calidad de los productos y a un riguroso control de calidad de los mismos. Para mantener la buena calidad de los productos, la empresa ha establecido un Centro de Pruebas e Inspección desde 2004. Con una serie de pruebas de última generación y equipos de inspección, el centro de pruebas e inspección es capaz de realizar las pruebas de tracción, pruebas hidráulicas, pruebas de impacto, DWTT, etc.
Types of ASTM A53 Grade A Pipes
- ASTM A53 Grade A Type E – Electric Resistance Welded Pipe.
The heat generated by electric resistance between the pipe’s opposing ends welds the longitudinal connection of Type E Garde A and Garde B pipes. A set of rollers is also utilized in this procedure to join heated ends. After welding, the weld seam of Grade pipes is heat-treated to a minimum of 540°C.
- ASTM A53 Grade A Type S – Seamless Pipe
The extrusion process is used to manufacture Type S pipes. The raw steel used to manufacture pipes is produced using an open-hearth furnace, an electric furnace, or a basic-oxygen method.
- ASTM A53 Grade A Type F – Forge Welding Pipe
The Type F Grade A pipe is produced from a continuous coil, and the longitudinal junction is welded by forge welding. Sets of rollers are employed in this procedure to apply mechanical pressure to the heated ends of the coil.
Dimensions and Sizes of ASTM A53 Grade a Pipe
| NPS | O.D. | Espesor nominal de la pared | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN | En pulgadas | mm | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | Sth | XS | XXS |
| 50 | 2″ | 60.3 | 1.65 | 2.77 | - | - | - | 3.91 | - | 5.54 | - | - | - | 8.74 | 3.91 | 5.54 | 11.07 |
| 65 | 2 1/2″ | 73 | 2.11 | 3.05 | - | - | - | 5.16 | - | 7.01 | - | - | - | 9.53 | 5.16 | 7.01 | 14.02 |
| 80 | 3″ | 88.9 | 2.11 | 3.05 | - | - | - | 5.49 | - | 7.62 | - | - | - | 11.13 | 5.49 | 7.52 | 15.24 |
| 90 | 3 1/2″ | 101.6 | 2.11 | 3.05 | - | - | - | 5.74 | - | 8.08 | - | - | - | - | 5.74 | 8.08 | - |
| 100 | 4″ | 114.3 | 2.11 | 3.05 | - | - | - | 6.02 | - | 8.58 | - | 11.13 | - | 13.49 | 6.02 | 8.56 | 17.12 |
| 125 | 5″ | 141.3 | 2.77 | 3.4 | - | - | - | 6.55 | - | 9.53 | - | 12.7 | - | 15.88 | 6.55 | 9.53 | 18.05 |
| 150 | 6″ | 168.3 | 2.77 | 3.4 | - | - | - | 7.11 | - | 10.97 | - | 14.27 | - | 18.26 | 7.11 | 10.97 | 21.95 |
| 200 | 8″ | 219.1 | 2.77 | 3.76 | - | 6.35 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 8.18 | 12.7 | 22.23 |
| 250 | 10″ | 273.1 | 3.4 | 4.19 | - | 6.35 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 9.27 | 12.7 | 25.4 |
| 300 | 12″ | 323.9 | 3.96 | 4.57 | - | 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 9.53 | 12.7 | 25.4 |
| 350 | 14″ | 355.5 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 9.53 | 12.7 | - |
| 400 | 16″ | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 12.7 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 9.53 | 12.7 | - |
| 450 | 18″ | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 14.27 | 19.05 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 | - | - | - |
| 500 | 20″ | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | - | - | - |
| 550 | 22″ | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | - | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | - | - | - |
| 600 | 24″ | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | - | - | - |
Chemical Composition of ASTM A53 Grade A Pipes
| Elementos | Type S (Seamless) Grade A | Type E (ERW) Grade A | Type F (Forge Welding) Grade A |
|---|---|---|---|
| Carbono máx. % | 0.25 | 0.25 | 0.3 |
| Manganeso % | 0.95 | 0.95 | 1.2 |
| Fósforo, máx. % | 0.05 | 0.05 | 0.05 |
| Azufre, máx. % | 0.045 | 0.045 | 0.045 |
| Cobre, máx.% | 0.4 | 0.4 | 0.4 |
| Níquel, máx. % | 0.4 | 0.4 | 0.4 |
| Cromo, máx. % | 0.4 | 0.4 | 0.4 |
| Molibdeno, máx. % | 0.15 | 0.15 | 0.15 |
| Vanadio, máx. % | 0.08 | 0.08 | - |
Mechanical Properties of ASTM A53 Grade A Pipes
| Tipos y grados | Mín. Resistencia a la tracción | Mín. Límite elástico |
|---|---|---|
| Type E and S – ASTM A53 Grade A | 330Mpa / 48000psi | 205Mpa / 30000psi |
| Type F – ASTM A53 Grade A | 330Mpa / 48000psi | 205Mpa / 30000psi |
Pruebas e inspección durante la producción de tubos ASTM A53 Grado A
- Análisis químico - Número de pruebas: 2 piezas cada lote de 500 o 2 piezas por colada. (Si alguno de los tubos falla, deben probarse otras dos piezas del mismo lote).
- Ensayo de tracción - Este ensayo se realiza para evaluar las propiedades mecánicas del tubo. En el caso de tubos soldados, la resistencia de la soldadura no deberá ser inferior a la resistencia del cuerpo del tubo.
- Prueba de flexión - En tuberías de diámetro NPS 2 o inferior, se realiza una prueba de flexión para determinar la ductilidad de la tubería. La prueba de curvatura puede ser de 90 grados o de 180 grados, dependiendo de la situación.
- Prueba de aplanamiento – For ductility, pipe sizes greater than NPS 2 are flattening test. In line with ASTM A53, a pipe sample is sliced and flattened between two flat surfaces.
- Hydro-Test - Se trata de una prueba que se realiza en cada tramo de la tubería para determinar si existe o no una fuga. La presión debe mantenerse durante al menos 5 segundos.
- Ensayo ultrasónico o electromagnético del cordón de soldadura - Este ensayo no destructivo se realiza a lo largo de toda la soldadura para comprobar su integridad.
Thickness and Mass Tolerance of ASTM A53 Grade A Pipes
| Artículo | O.D. | En | En |
|---|---|---|---|
| Diámetro exterior | NPS 1/8 a 1-1/2, DN 6 a 40 | ±0,4 mm | ±0,4 mm |
| NPS 2 y superior, DN 50 y superior | ±1% | ±1% | |
| Espesor de pared en cualquier punto | – | ±12,5% | |
| Peso | ±10% | ±10% | |
Type of ASTM A53 Grade A Pipe Ends
- Pipes with diameters less than 0.500 inches and STD / XS pipes with plain or beveled ends are examples of ASTM A53 pipe ends.
- Pipe schedules with diameters higher than 0.500 inches and XXS: Ends are squared cut and simple.
- Thread protection is necessary for pipes bigger than 4 inches in diameter that have threaded ends.
ASTM A53 Grade A Pipe Marking Contents
The following marks must be applied to each length of pipe (or bundle for smaller diameters):
- Nombre del fabricante del tipo A53 (S, E, F)
- Dimensions and timetable (from 10 to 160 and XXS)
- The designation “ASTM A53”
- The heat number
