Lap Joint Flange

The lap joint flange is practically identical to a slip-on flange except it has a radius at the intersection of the bore and flange face. This radius is necessary to have the flange accommodate a lap joint stub end. Normally, a lap joint flange and a lap joint stub end are mated together is an assembly system.

Standards, Dimensions & Weight

• ASME/ANSI B16.5 Class 150 LJ
• ASME/ANSI B16.5 Class 300 LJ
• ASME/ANSI B16.5 Class 600 LJ
• ASME/ANSI B16.5 Class 900 LJ
• ASME/ANSI B16.5 Class 1500 LJ
• ASME/ANSI B16.5 Class 2500 LJ

Lap joint flange draws :

Lap Joint flanges

Size: 1/2” to 60”, DN 12mm to DN 1500mm view...

Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250

Facing: RF / RTJ

Cabon steel: A105, A350 LF2

Stainless steel: A182 F304/F304L/F316/F316L/F321

Alloy steel: F11, F12

Packing: plywood case and plywood pallet

Usage:

Flanges are integral parts of many engineering and plumbing projects. In many applications, engineers need to find a way to close off a chamber or cylinder in a very secure fashion, usually because the substance inside must differ from the substance outside in composition or pressure.

They do this by fastening two pieces of metal or other material together with a circle of bolts on a lip. This “lip” is a flange.

Plumbing

You can connect two sections of metal piping by soldering or welding them together, but pipes connected in this way are very susceptible to bursting at high pressures. A way of connecting two sections of pipe more securely is by having flanged ends that you can