Lap-Joint Flanges
Lap-joint flanges, similar to slip-on flanges, feature a radius at the bore and flange face to accommodate a lap stub end, with the stub end’s face forming the gasket surface. They enable quick dismantling for inspection or replacement in piping systems.
These flanges are ideal for applications requiring frequent maintenance, offering cost-effective and flexible connections in industries like chemical processing, water treatment, and oil and gas.
Lap-joint flanges are designed for systems needing easy disassembly, featuring a radiused edge to fit a lap stub end, which provides the sealing surface for the gasket. Unlike welded flanges, they are not fixed to the pipe, allowing rotation and alignment flexibility during installation. This makes them perfect for applications where sections of piping must be frequently removed for cleaning, inspection, or replacement, offering both convenience and cost savings in maintenance-heavy environments.
Lap-joint flanges are manufactured to meet industry standards, ensuring compatibility and performance in various piping applications.
Grade/Standard | Equivalent | Application |
---|---|---|
ASTM A105, ANSI B16.5 | Carbon Steel | Oil and gas, general piping |
ASTM A182 F304/F316 | Stainless Steel | Chemical processing, food industry |
ASTM A350 LF2 | Low-Temperature Carbon Steel | Low-temperature piping systems |
Lap-joint flanges are essential in industries requiring frequent maintenance and flexible piping connections:
Properties | Values & Limits |
---|---|
Material | Carbon Steel, Stainless Steel, Alloy Steel |
Standards | ASME B16.5, ANSI B16.47, MSS-SP-44 |
Connection | Used with Lap Stub End |
Size Range | 1/2" to 24" (Standard), up to 48" (Custom) |
Pressure Rating | 150#, 300#, 600#, 900# |