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A forged fitting cross is a type of pipe fitting designed to connect four pipes in a cross-like shape. These fittings are made through the forging process, which gives them enhanced strength, durability, and resistance to high pressure and temperature. A forged cross is primarily used when a pipe system requires a branch to be connected to multiple lines at once.
Specifications
| Specification | Details |
|---|---|
| Type | Cross (Equal or Reducing) |
| Material | - Carbon Steel (ASTM A105) |
| - Stainless Steel (ASTM A182 F304, F316) | |
| - Alloy Steel (ASTM A182 F5, F9) | |
| Pressure Rating | Class 2000, 3000, 6000 |
| Size Range | Typically from 1/8” to 4” NPS |
| Connection Types | - Threaded (NPT/BSP) |
| - Socket Weld | |
| End Configuration | - Equal Cross: All four branches of equal size. |
| - Reducing Cross: One or more branches are of smaller size compared to the others. | |
| Temperature Rating | Depends on the material but generally suitable for high-temperature systems (up to 1000°F/537°C for certain grades). |
| Design Standards | - ASME B16.11 |
| - MSS SP-83 | |
| - BS 3799 | |
| Applications | - Oil & Gas |
| - Chemical Processing | |
| - Petrochemical | |
| - Power Generation | |
| - Water Treatment Systems | |
| - Industrial Systems | |
| Surface Finish | Typically smooth or machined for threaded or socket weld applications. |
| Corrosion Resistance | Excellent in corrosive environments, especially when made with Stainless Steel or Alloy Steel. |
Grades
| Material Type | Grade | Description |
|---|---|---|
| Carbon Steel | ASTM A105 | Standard carbon steel used in general-purpose forged fittings. Suitable for low to medium-pressure applications. |
| Stainless Steel | ASTM A182 F304 | Austenitic stainless steel offering good corrosion resistance in many environments. Commonly used in food processing, chemical, and petrochemical industries. |
| ASTM A182 F316 | Stainless steel with enhanced resistance to corrosion and pitting, particularly in marine and chloride environments. | |
| Alloy Steel | ASTM A182 F5 | Chromium alloy steel designed for high-temperature and high-pressure applications, such as steam systems, boilers, and turbines. |
| ASTM A182 F9 | Higher-strength alloy steel, ideal for extreme high-temperature environments such as heat exchangers and power plants. | |
| Duplex Stainless Steel | ASTM A182 F51 | High strength and excellent corrosion resistance, especially in chloride-rich environments like marine applications. |
| Low-Temperature Carbon Steel | ASTM A350 LF2 | Designed for low-temperature applications, including cryogenic pipelines and systems operating in sub-zero conditions. |
| Feature | Description |
|---|---|
| Durability | Forged construction provides excellent strength and longevity under high pressure and temperature conditions. |
| Pressure Resistance | Available in Class 2000, 3000, and 6000 for high-pressure systems. |
| Material Options | Available in carbon steel, stainless steel, and alloy steel for various industrial applications. |
| Connection Types | Available in Threaded (NPT/BSP) or Socket Weld configurations. |
| Size Range | Typically from 1/8” to 4” NPS, accommodating various pipe sizes. |
| Corrosion Resistance | Stainless steel versions offer superior corrosion resistance, ideal for chemical, food, and marine environments. |
| Applications | Common in oil & gas, power generation, chemical processing, water treatment, and industrial piping systems. |
Dimenstion Chart
| Size (NPS) | Outside Diameter (OD) (inches) | Length (inches) | Branch Size (inches) | Pressure Class (Class) |
|---|---|---|---|---|
| 1/8" | 0.405 | 1.00 | 1/8” | 2000, 3000, 6000 |
| 1/4" | 0.540 | 1.10 | 1/4” | 2000, 3000, 6000 |
| 3/8" | 0.675 | 1.20 | 3/8” | 2000, 3000, 6000 |
| 1/2" | 0.840 | 1.40 | 1/2” | 2000, 3000, 6000 |
| 3/4" | 1.050 | 1.60 | 3/4” | 2000, 3000, 6000 |
| 1" | 1.315 | 1.80 | 1” | 2000, 3000, 6000 |
| 1 1/4" | 1.660 | 2.00 | 1 1/4” | 2000, 3000, 6000 |
| 1 1/2" | 1.900 | 2.20 | 1 1/2” | 2000, 3000, 6000 |
| 2" | 2.375 | 2.50 | 2” | 2000, 3000, 6000 |
| 2 1/2" | 2.875 | 3.00 | 2 1/2” | 2000, 3000, 6000 |
| 3" | 3.500 | 3.50 | 3” | 2000, 3000, 6000 |
| 4" | 4.500 | 4.00 | 4” | 2000, 3000, 6000 |