Piping Systems
Ideal for systems requiring alignment flexibility and repeatable assembly.
Product Detail
Lapped Flange
Precision-engineered for accurate mating surfaces and dependable assembly integrity.
Overview
A reliable option where close fit and surface accuracy matter
Lapped flanges are designed for controlled contact and sealing surfaces, helping support dependable assembly in equipment and piping systems where precise surface finish is critical.
- Designed for controlled seating surfaces and precise fitment.
- Suitable for demanding industrial piping and equipment requirements.
- Available in multiple alloys and pressure classes.
Technical
Lapped Flange specifications
ASME B16.5 – 2020
StandardASME B16.5
Size Range1/2" to 24"
Pressure Class150 to 2500
FacingLap Joint
| Feature | Details |
|---|---|
| Design Purpose | Improved mating surface control and assembly precision |
| Assembly Type | Lap joint configuration with matched seating surface |
| Typical Use | Systems requiring flexibility and controlled alignment |
| Material Options | Carbon steel, alloy steel, stainless steel and specialty alloys |
Dimensions of Class
| Class | OD (mm) | Thickness (mm) | Bolt Circle (mm) | Bolt Count | Bolt Dia (mm) |
|---|---|---|---|---|---|
| 150 | 89-1219 | 9.5-55 | 60-1067 | 4-32 | 12.7-31.8 |
| 300 | 95-1321 | 10-68 | 67-1143 | 4-32 | 15.9-31.8 |
| 600 | 95-1321 | 12-83 | 67-1143 | 4-32 | 15.9-31.8 |
| 900 | 114-1321 | 16-92 | 79-1219 | 8-32 | 19.1-34.9 |
| 1500 | 121-1524 | 19-105 | 86-1397 | 8-40 | 22.2-38.1 |
| 2500 | 127-1524 | 28-135 | 89-1397 | 8-44 | 25.4-41.3 |
Applications
Where lapped flanges are preferred
Heat Exchangers
Used in equipment interfaces where controlled surface geometry matters.
Pressure Equipment
Supports dependable joining in process utility and industrial piping arrangements.