Categoría 300 Clase Estándar Americano Accesorios de tubería de hierro maleable
- Certificado: Listado por UL / Aprobado por FM
- Superficie: Hierro negro / Galvanizado por inmersión en caliente
- Norma: ASME B16.3
- Material: Hierro maleable ASTM A197
- Hilo: NPT / BS21
- Presión de trabajo: 300 PSI 10 kg/cm a 550° F
- Superficie: Hierro negro / Galvanizado por inmersión en caliente
- Resistencia a la tracción: 28,4 kg/mm (mínimo)
- Alargamiento: 5% mínimo
- Recubrimiento de zinc: promedio de 86 um, cada accesorio ≥77,6 um
Tamaño disponible:

Artículo |
Tamaño (pulgadas) |
Dimensiones |
Cantidad de cajas |
Caso especial |
Peso |
|||||
Número |
A | B | C | D |
Maestro |
Interno |
Maestro |
Interno |
(Gramo) |
|
H-UNI02 | 1/4 | 19.5 | 17.5 | 22.0 |
200 |
50 |
100 |
50 |
130.5 |
|
H-UNI03 | 3/8 | 22.5 | 19.0 | 24.2 |
120 |
60 |
90 |
45 |
233 |
|
H-UNI05 | 1/2 | 24.5 | 20.0 | 27.0 |
80 |
40 |
40 |
20 |
261.4 |
|
H-UNI07 | 3/4 | 27.5 | 21.0 | 29.0 |
60 |
30 |
30 |
15 |
400 |
|
H-UNI10 | 1 | 29.0 | 23.0 | 32.5 |
36 |
18 |
18 |
9 |
665.8 |
|
H-UNI12 | 1-1/4 | 33.0 | 26.0 | 38.0 |
24 |
12 |
12 |
6 |
945.8 |
|
H-UNI15 | 1-1/2 | 35.5 | 29.0 | 41.5 |
20 |
10 |
10 |
5 |
1121.3 |
|
H-UNI20 | 2 | 42.0 | 32.0 | 45.0 |
12 |
6 |
6 |
3 |
1914 |
|
H-UNI25 | 2-1/2 | 44.0 | 37.0 | 51.0 |
8 |
4 |
4 |
2 |
2347 |
|
H-UNI30 | 3 | 55.5 | 43.0 | 58.0 |
6 |
2 |
3 |
1 |
3582.5 |
|
H-UNI40 | 4 | 61.5 | 54.0 | 64.5 |
2 |
1 |
1 |
1 |
8450 |
1.Building water supply pipeline system
2.Building heating and water supply system
3.Building fire pipeline system
4.Building gas pipeline system
5.Oil pipeline piping system
6.Other non corrosive liquid I gas pipelines


The 300 Class American Standard Malleable Iron Pipe Fittings Union With Brass Seat is a detachable fitting with both female threaded connections, featuring a ball-to-cone or ball-to-ball joint. It consists of a male tail, a female head, a union nut, and a brass seat, delivering strong performance and various functions.
Firstly, this malleable iron union is suitable for pipeline connections in many industries, including industrial, chemical, petroleum, natural gas, aerospace, shipbuilding, construction, and water treatment. Whether under high pressure or low pressure, this union can provide a reliable connection, ensuring the smooth flow of fluids in pipelines.
Secondly, this product is characterized by its corrosion resistance and durability. Made of malleable iron and treated with heat and galvanizing, it can prevent corrosion and rust in different environments. Moreover, the brass seat enhances the sealing performance of the union, ensuring good performance even under high temperature, high pressure, and vibration.
In addition, this product is easy to install and disassemble, thanks to the ball-to-cone or ball-to-ball joint connection. The union nut is made of high-quality steel, sturdy and reliable, and can be adjusted according to the needs of different pipelines.
Finally, this product meets American and international standards, ensuring high interchangeability and compatibility. Customers can purchase and use it with confidence, and also enjoy excellent after-sales service.
In summary, the 300 Class American Standard Malleable Iron Pipe Fittings Union With Brass Seat is a strong and versatile pipeline connection fitting, suitable for various industries and applications.
Mantener calificado cada accesorio de tubería que nuestros Clientes reciben.
P: ¿Es usted una fábrica o una empresa comercial?
A:Somos una fábrica con más de 30 años de historia en el campo de la fundición.
P: ¿Qué condiciones de pago admiten?
A: TTor L/C. 30% payment in advance, and the 70%balance would be paid before shipment.
P: ¿Cuánto tiempo dura su entrega?
A: 35 días a partir de la recepción del pago anticipado.
P: ¿Es posible obtener muestras de su fábrica?
R: Sí. Se proporcionarán muestras gratuitas.
P: ¿Cuántos años tienen garantía los productos?
A: Mínimo 1 año.
NOTICIAS