Lap Joint Flanges Key Features:

• Recommended in applications that require frequent dismantling of the flanges and pipe.
• Used with a matching stub-end insert.
• Can rotate to allow for an easy alignment of bolt holes.
• Not recommended in extreme or high-pressure temperature applications.

Advantages of Lap Joint Flanges:

• Lap Joint flanges have certain special advantages over other flanges. These are as follows:
• Lap Joint flanges have the freedom to swivel around the pipe. This facilitates the lining up of opposing flange bolt holes.
• Lack of contact with the fluid inside the pipe leads to the greater durability of these flanges.
• In piping systems which corrode or erode quickly, the lap joint flanges may be salvaged for re-use.
• The pressure-holding capacity of lap joint flanges is little. But it is better than that of slip-on flanges.
• The Lap Joint works as a backing ring on the stub.
• The main advantage of lap joint flange is that the bolt holes can be aligned with the matching flange after the welds have been completed.
• They allow rotational alignment capability.

Product range
Lap Joint Flanges Range

½” (15 NB) to 48” (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. Available with NACE MR 01-75

Stainless Steel Lap Joint Flanges
Grade : 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430L

Duplex Steel Lap Joint Flanges
Grade : 2205 (UNS No. S31803), 2507 (UNS No. S32750)

Nickel Alloy Lap Joint Flanges
Grade : Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II)

Copper Alloy Lap Joint Flanges
Grade : UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30)

Lap Joint Flanges Standard

• ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
• DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
• B.S : BS4504 , BS4504, BS1560, BS10
• OTHER : PLATE, PLATE BLANK

Value Added Services for Lap Joint Flanges

• HOT DIPPED GALVANIZING
• HEAT TREATMENT
• CNC MACHINING
• THREADING