Flanges
Lap Joint Flanges
Lap Joint flanges are used in conjunction with a stub end, where the flange slips over the pipe and the stub end is butt-welded to the pipe. This allows the flange to rotate freely for bolt alignment and enables easy dismantling. The key advantage is cost savings when using exotic materials — only the stub end needs to be the expensive alloy, while the backing flange can be carbon steel.
Size: 1/2" – 24" | Class 150 – 600Standards: ANSI B16.5, MSS-SP-43
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Technical Specifications
| Size Range | 1/2" – 24" |
|---|---|
| Pressure Class | 150, 300, 600 |
| Components | Backing Flange + Stub End |
| Manufacturing | Forged (Flange) + Wrought (Stub End) |
Surface Finish / Coating
BareAnti-Rust Oil
Available Grades
Carbon Steel
- ASTM A105 (Backing Flange)
Stainless Steel
- ASTM A182 F304/L (Stub End)
- ASTM A182 F316/L (Stub End)
Applications
Exotic Material Piping (cost saving)
Systems Requiring Frequent Dismantling
Food & Beverage
Pharmaceutical
Key Features
- Free rotation for bolt alignment
- Cost saving with exotic materials
- Easy dismantling and reassembly
- Carbon steel flange with alloy stub end
Manufacturing Standards
ANSI B16.5
MSS-SP-43
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