Stainless Steel Lap Joint Flanges Suppliers in India

  • Their pressure holding ability is little if any better than that of slip on flanges and the fatigue life for the assembly is only one tenth that of welding neck flanges. They may be used at all pressures and are available in a full size range. These flanges slip over the pipe, and are not welded or otherwise fastened to it. Bolting pressure is transmitted to the gasket by the pressure of the flange against the back of the pipe lap.

  • Stainless Steel Lap Join Flanges Available Size ½’(15NB) to 48’ (1200NB)

  • Standards of Stainless Steel Lap Join Flanges ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom

Stainless Steel Lap Joint Flanges Manufacturers – Top Jindal, Steel Flanges Suppliers in India!

  • Asiamet is a leading manufacturers, suppliers in India. Lap joint flanges are used on piping fitted with lapped pipe or with lap joint stub ends the combined initial cost of the two items being approximately one third higher than that of comparable welding neck flanges.
  • Lap joint flange is having two components, a stub end and a loose backing flange. Stub end is butt welded to the pipe and backing flange freely move over the pipe. The backing flange can be of different material than stub material and normally of the carbon steel to save the cost. Lap flange is used where frequent dismantling is required and space is constrained.
  • Furthermore a standard lap joint flange will typically have a longer hub length in comparison to a slip on flange, but this is often considered unnecessary for many applications. 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.
  • 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.
Product Stainless Steel Lap Joint Flanges
Size 1/2″(15 NB) to 48″ (1200NB)
Standards ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6, 10, 16, 25, 40
Types Flute Face, Raised Face, Ring Type joint
Price Terms Ex-Works, FOB, CIF, CFR, CNF
Latest Price Call +919619672006
Email sales@asiametsteel.com
Stainless Steel Lap Joint Flanges Manufacturers, Suppliers
  • Do you want to know how much does a Stainless steel lap joint flanges cost? Do you want to know where you can get the best price and quality steel flanges in India?

  • We are ready to provide you our quality products, fast delivery service, and custom cut flanges sizes. Send us your detailed inquiry to us, our professional staff will get back to you with our best solution and costs.

  • The experts here in this company are aimed to provide the best quality of flanges as per the requirement and demand of customers.

Stainless Steel Lap Joint Flanges Advantages

  • They allow rotational alignment capability.
  • The Lap Joint works as a backing ring on the stub.
  • 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.
  • Lap Joint flanges have the freedom to swivel around the pipe. This facilitates the lining up of opposing flange bolt holes.
  • 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.

Grades of Flanges

  • Stainless Steel Screwed / Threaded Flanges: ASTM A182, A240, 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 310H, 321, 321H, 317, 317H, 347, 347H, 904L
  • Alloy Steel Screwed / Threaded Flanges: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
  • Carbon Steel Screwed / Threaded Flanges: ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70, ASTM A350, LF2, LF3
  • Duplex & Super Duplex Steel Screwed / Threaded Flanges: ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61, 2205 (UNS No. S31803), 2507 (UNS No. S32750)
  • Copper Alloy Steel Screwed / Threaded Flanges: ASTM SB 61, SB62, SB151, SB152 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)
  • Nickel Alloy Screwed / Threaded Flanges: ASTM SB564, SB160, SB472, SB162 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).

What is Stainless Steel Lap Joint Flanges?

A Lap joint flange is a two piece device that is much like a weld-neck flange but also like a loose slip-on flange. One piece is a sleeve called a ‘Stub-end” and is shaped like a short piece of pipe with a weld bevel on one end and a narrow shoulder on the other end called the hub. The hub is the same outside diameter as the raised face (gasket contact surface) of a weld neck flange. The thickness of the hub is normally about ¼” to 3/8″. The back face of the hub has a rounded transition (or inside fillet) that joins the hub to the sleeve.

The other piece of a lap joint flange is the backing flange. This flange has all the same common dimensions (O.D., bolt circle, bolt hole size, etc.) as any other flange however it does not have a raised face. One side, the backside, has a slight shoulder that is square cut at the center or pipe hole. The front side has flat face and at the center holes an outside fillet to match the fillet of the “Stub-end” piece. The flange part of the lap joint flange assembly is slipped on to the stub-end prior to the sleeve being welded to the adjoining pipe or fitting. The flange itself is not welded or fixed in any way. It is free to spin for proper alignment with whatever it is joining to.

Using lap joint flanges might be an option for saving costs when the piping is made of exotic materials. By using a lap joint flange, the whetted materials would consist of the exotic materials and the flange would be carbon steel. Since the flange doesn’t ever come in contact with the process fluid, it would not be affected by the fluids.

Key Features of Stainless Steel Lap Joint Flanges

  • 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.
  • Recommended in applications that require frequent dismantling of the flanges and pipe.

Packing Details of Stainless Steel Lap Joint Flanges

Product is packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with grade, Lot No, Size, Degree and our trade mark. On special request we can also, make custom marking on our products.