Lap Joint
Lap Joint

ASME/ANSI B16.5 LAP JOINT PIPE FLANGES MANUFACTURER IN INDIA

MANUFACTURER/EXPORTER OF HIGH QUALITY LAP JOINT (LJ) FORGED FLANGES

CARBON, ALLOY, STAINLESS STEEL LAP JOINT FLANGES

Indoverseas is a specialised manufacturer of high quality ASME/ANSI/DIN industrial lap joint flanges in India. We offer immediate delivery programs for standard size carbon steel lap joint flanges and stainless steel lap joint flanges. Lap joint flanges manufactured in carbon steel, special stainless steel grades, nickel alloy and alloy steel can be supplied with just in time programs.

Lap Joint Flanges are similar to other types of industrial flanges, but it does not have a raised face. Lap joint flanges are used in conjunction with a “Lap Joint Stub End”. The total initial cost of a lap joint flange along with a stub end is around one-third higher than that of comparable welding neck flanges. The pressure holding capacity of lap joint flanges is comparatively lower, and the fatigue life for the assembly is only one tenth that of welding neck flanges.

Our Live Stock Mild Steel Flanges

Range of Flanges

Process of manufacturing

Our manufacturing process is highly sophisticated and is divided into various departments supervised by experienced industry experts. We use only quality raw materials that are procured from only established and reliable vendors. We have adopted rigorous quality control practices and procedures to ensure the production of only quality products matching industry standards and parameters.

1. Raw Material

  • Raw Material Check
  • Quantity Check
  • Visual & Dimension Check

2. Material Inspection

  • Chemical Analysis Check
  • Preservation Analysis Certificate

3. Material Cutting

  • Weight Measuring
  • Cut Surface Check
  • Marking

4. Flange forging

  • Material Grade Check
  • Weight Measuring
  • Temperature Control

5. Heat Treatment

  • Normalizing
  • Tempering, Q.T
  • Solution Treatment
  • Mechanical Test

6. Forging Rolling

  • Material Grade Check
  • Weight Measuring
  • Temperature Check
  • Dimension Check

7. Final Inspection

  • Dimension size inspect
  • Visual Test
  • Nondestructive Test

8. Rust Prevention

  • Preserve Check
  • Marking on the flange
  • Tectyl 506or Pickling or etc. Coating

9. Well Packing

  • Packing Spec. Check
  • Packing Inspection
  • Delivery

Requirements are valid for normal situation, in special you have to contact us to introduce.

Our machining and assembly operations have a complete line of metal removal equipment including turning, boring, milling, drilling, grinding, polishing, welding and have testing equipment to manufacture forged steel fittings and valves. This facility also contains all the necessary equipment to support these operations including work holding and cutting tool needs.

Raw Materials

The usual materials of flanges include stainless steel, carbon steel, aluminum and plastic.Beginning with this process,the system controls the quality of all incoming materials as per the raw material test certificate of the material. Mild Steel Flanges ( MS ) are of premium quality that ensures high durability, strength and resistivity to varied non-supporting conditions. Also, checking in each size for chemical and physical properties of these materials at Government approved laboratory.

Flange materials according to ASTM

Dimensions from carbon steel and stainless steel flanges are defined in the ASME B16.5 standard. The material qualities for these flanges are defined in the ASTM standards.

The Rust Prevention for Steel Flanges

The normal rust prevention treatment for steel flanges include yellow (Golden) paint Coating, black paint coating or black phosphating treatment, varnish paint coating, varnish antirust oil coating, electro galvanizing coating (Cold), hot dip galvanizing coating etc.

The Packing Works for Steel Flanges

Steel flanges must be packed with seaworthy packing method then delivery to customers, usually the packing way include wooden box, wooden pallet, iron & steel cage, iron & steel pallet etc. Because of the normal wooden boxes or wooden pallets have to do fumigation treatment, we usually use plywood pallet or plywood case or box to pack steel flanges without fumigation treatment. Whatever plywood or iron & steel packing way, they must be seaworthy, strong, waterproof and easy for loading and unloading.

Marking on the flange

Shipping mark stick to outside of package. Following shall be marked on flange body

  • Manufacturer logo
  • ASTM material code
  • Material Grade
  • Service rating (Pressure-temperature Class))
  • Size
  • Thickness (Schedule)
  • Heat No
  • Special marking if any QT (Quenched and tempered) or W (Repair by welding)

Dispatch

The final process of dispatch is the most tedious of all , and heavy duty cranes are used for it. With the help of our extensive delivery chain we can ensure time critical deliveries at the behest of our esteemed clients. We are indeed privileged to be able to serve and live upto their expectations and occupy unparalleled postion of Flange makers in China.

Standards

  • ANSI
  • JIS
  • DIN
  • BS4504
  • SABS1123
  • EN1092-1
  • UNI
  • AS2129
  • GOST-12820

Test Certificate

  • TUV INDIA PVT. LTD (TUV)
  • BUREA VERITAS INDUSTRIAL SERVICES (INDIA) PVT. LTD (BVIS)
  • A- FOUR ASSOCIATES
  • INTERNATIONAL CERTIFICATIONS SERVICES (ASIA) PVT. LTD (ICS)
  • BAX COUNSEL INSPECTION BUREAU PVT. LTD

Marking & Packing

No Fumigate or Fumigate Plywood/Wood Pallet or Case

Physical Composition

Applications

  • Lap Joint Flanges uses in Oil and Gas Pipeline
  • Lap Joint Flanges uses in Chemical Industry
  • Lap Joint Flanges uses in Plumbing
  • Lap Joint Flanges uses in Oil & Gas Industry