Lap Joint Flanges Manufacturers in India

  • Lap joint flange has a two piece configuration it offers a way to cut cost when piping systems requires a high cost alloy for all “wetted” parts to reduce corrosion. In this situation, it is only required for the stub-end to be can be made of the higher cost corrosion-resistant material, where the flange itself can be the produced from lower cost steel.

  • Lap Jpint Flanges Available Size ½” (15 NB) to 48″ (1200NB)

  • Standard of Lap Joint Flanges  ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

Lap Joint Flanges Suppliers – Top Quality Lap Joint Flanges Manufacturers in India!

  • Asiamet is manufacturers, suppliers in India. Lap joint pipe flanges slide directly over the pipe and are most commonly used with stub end fittings. A pipe is usually welded to the stub end and the lap joint pipe flange is free to rotate around the stub end.  The benefit of this is that there will not be any issues with bolt whole alignment.  Lap joint pipe flanges are often used for applications that require frequent dismantling.
  • Slip on pipe flanges with a hub has published specifications that range from ½” (15 NB) to 48″ (1200NB) are produced as lap joints to slip on dimensions.  Asiamet lap joint pipe flanges in all material grades specifications and sizes.
  • We manufactures lap joint pipe flanges in all steel material grades, including carbon lap joint pipe flanges, stainless steel lap joint pipe flanges and alloy lap joint pipe flanges. Asiamet can also manufacture custom pipe flanges according to customer specifications.
  • These includes in various materials such as stainless steel, carbon steel, alloy steel, monel and nickel available in number of classes like 150LB, 300LB, 400LB, 600LB, 900LB, 1500LB according to the customer specification.
Product Lap joint Flanges
Size ½” (15 NB) to 48″ (1200NB)
Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6, 10, 16, 25, 40
Packing Bundled Packing, Loose
Price Terms Ex-Works, FOB, CIF, CFR, CNF
Latest Price Call +919619672006
Email sales@asiametsteel.com
Lap joint Flange Suppliers, Dealers
  • Do you want to know how much does a 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.

What is a 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.

Specification of Lap Joint Flanges

Type LJ Forged Flange, Class 150 Lap Joints, Class 300 Lap Joints, Class 600 Lap Joints
Size ½” (15 NB) to 48″ (1200NB)
Standard ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN, JIS, SABS1123, GOST-12820
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
DIN DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
BS BS4504 , BS4504, BS1560, BS10
In Form SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc
Specialize As per drawing
Coating/Surface Treatment Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Connection Type Ring Type Joint, Lap-Joint Face, Raised Face, Flat Face, Large Male-Female, Small Male-Female, Large
Tongue & Groove, Small Tongue & Groove
Flange Face Type Flat Face (FF), Raise Face (RF), Ring Joint (RJT)
Dimensions ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Packing No Fumigate or Fumigate Plywood/Wood Pallet or Case
Usage Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.
Type LJ Forged Flange, Class 150 Lap Joints, Class 300 Lap Joints, Class 600 Lap Joints
Size ½” (15 NB) to 48″ (1200NB)
Standard ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN, JIS, SABS1123, GOST-12820
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
DIN DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
BS BS4504 , BS4504, BS1560, BS10
In Form SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc
Specialize As per drawing
Coating/Surface Treatment Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Connection Type Ring Type Joint, Lap-Joint Face, Raised Face, Flat Face, Large Male-Female, Small Male-Female, Large
Tongue & Groove, Small Tongue & Groove
Flange Face Type Flat Face (FF), Raise Face (RF), Ring Joint (RJT)
Dimensions ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Packing No Fumigate or Fumigate Plywood/Wood Pallet or Case
Usage Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.

Grade of Lap Joint Flanges

  1. Monel Grade: Monel 400, Monel K500, Monel R-405
  2. Nickel Grade: Nickel 200, Nickel 201
  3. Inconel Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
  4. Incoloy Grade: Incoloy 800, Inconel 800H, 800HT
  5. Hastalloy Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
  6. Titanium Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
  7. Stainless Steel Grade: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
  8. Carbon Steel Grade: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
  9. Duplex Steel Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61
  10. Alloy Steel Grade : ASTM A182 F1, F5, F9, F11, F22, F91

Advantages of Lap Joint Flanges

  1. Lap Joint flanges have the freedom to swivel around the pipe. This facilitates the lining up of opposing flange bolt holes.
  2. Lack of contact with the fluid inside the pipe leads to the greater durability of these flanges.
  3. In piping systems which corrode or erode quickly, the lap joint flanges may be salvaged for re-use.
  4. The pressure-holding capacity of lap joint flanges is little. But it is better than that of slip-on flanges.
  5. The Lap Joint works as a backing ring on the stub.
  6. 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.
  7. They allow rotational alignment capability.

Application of Lap Joint Flanges

  1. Oil & Gas and Paper
  2. Sugar and Oil Mills
  3. Ports and Railway
  4. Offshore and Defense
  5. Breweries and Cement
  6. Refineries and Fertilizers
  7. Mining and Construction
  8. Chemical and Petrochemical
  9. Shipbuilding and Steel Plant
  10. Power Plant and Nuclear Power
  11. Engineering Co. & and Government Org

Dimension - ASME B16.5 Lapped Joint Flange

CL 150 300 600 900 1500 2500  
DIA A 30 38 38 38 38 43
DIA D 90 95 95 120 120 135
THK B 11.2 14.3 14.3 22.3 22.3 30.2
DIA K 60.3 66.7 66.7 82.6 82.6
DIA K 16 22 22 32 32 40
No L 4 4 4 4 4 4
DIA L 15.9 15.9 15.9 22.2 22.2 22.2
Stud Bolts Diameter x Length
DIA (IN) 2-Jan 2-Jan 2-Jan 4-Mar 4-Mar 4-Mar
Len mm 55 65 75 110 110 120
Other Diameters
NPS 2-Jan 4-Mar 1 2
3 4 6 8 10 12
14 16 18 20 24

Testing of Lap Joint Flanges 

  • Macro test
  • Micro test
  • Chemical test
  • Flaring test
  • It is like PMI test
  • IGC test and hardness test
  • Mechanical test and  flattening test

Documents We Provide with Lap Joint Flanges

Documents like QAP Packaging list
NABL approved lab test report Guarantee letter
Raw material test report Material Traceability report
Commercial invoice to buyers The TC like MTC as per EN 10204/3.1B
Buyers report Third-party test report

FAQ’s regarding Lap Joint Flanges

  1. Are you a trading company or a manufacturer?

We are a manufacturer of Lap Joint Flanges in India.

  1. What are you main products?

We manufacture all kinds of elbow, tees, caps, flanges and steel pipes etc. with different materials.

  1. Do you provide free samples?

Yes, we would provide sample on your request.

  1. Why should I choose Asiamet as our source for Lap Joint Flanges?

We offer best quality product at most competitive price in the industry. You are promised to obtain the best quality, price and service.

  1. How to ensure the quality?

Mill Test Certificate is provided for all material. If needed, we can also allow third party inspection or buyer’s inspection

  1. How long is your delivery time for Lap Joint Flanges?

Generally it is 5-10 days if the good are in stock. Or it is 15-20 days if the goods are not in stock, it is According to quality

We Export Lap Joint Flanges Across the Globe!

  • MIDDLE EAST: Saudi Arabia, Iran, Ira, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Jordan, Cyprus
  • AFRICA: Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, the Republic Of Congo, Gabon
  • NORTH AMERICA: USA, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark
  • EUROPE:Russia, Norway, Germany, France, Italy, UK, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary Albania, Austria, Switzerland, Slovakia Finland, Ireland Croatia, Slovenia, Malta
  • ASIA: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia
  • SOUTH AMERICA: Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay

We Sell Lap Joint Flanges Across All Major Cities and Industrial Centers in India

Mumbai, Delhi, Bangalore, Hyderabad, Ahmadabad, Chennai, Bhilai, Kochi, Bhavnagar, Siliguri, Visakhapatnam, Jaipur, Ranchi, Kolkata, Pune, Jaipur, Surat, Lucknow, Chandigarh, Bhopal, Patna, Nagpur, Agra, Indore, Kanpur, Varanasi