Lap joint flange is also called  loose flange which slide directly over the pipe and are most commonly used with stub end fittings.

Dimensions

Size: 1/2 to 24 Inch / DN15 — DN600

Seal Type: RF. RTJ, FF

Pressure: Class 150, 300, 600, 900, 1500, 2500

Carbon Steel: ASTM A105, A350 LF2,LF3.

Stainless Steel: A182 F304, F316, F317, F321, F310

Alloy Steel: A182 F1, F5, F9, F11, F12, F22, F91

Duplex Steel: ASTM A182 F51, F53, F55