Lap Joint Flange (LJ Forged Flanges) Manufacturers In India

Manufacturer, exporter & suppliers of ASME/ANSI B16.5 carbon steel Lap Joint Flange, stainless steel Lap Joint Flange, alloy steel Lap Joint Flange

We manufacturer steel flanges which meet all international quality standards such as DIN, EN1092-1, BS4504, ANSI, API, MSS, AWWA, UNI, JIS, SANS, GOST, NFE, ISO, AS, NS LJ Forged Flanges etc. We are manufacturing 75lbs, 150lbs, 300lbs, 600lbs, 900lbs, 1500lbs, 2500lbs, PN6, PN10, PN16, PN25, PN40, PN63, PN64, PN100, GOST 12820 and GOST 12821, PN0.6MPA, PN1.0MPA, PN1.6MPA, PN2.5MPA, PN4.0MPA, SANS1123 or SABS1123, 600kpa, 1000kpa, 1600kpa, 2500kpa, 4000kpa flange ratings as per application or client’s requirement.

Our factory is located at Village Poman, Taluka Vasai, District Thane, Maharashtra, India. It is easily accessible through NH No.8 and 35 K.M. from International & Domestic airports. We have invested 3 million dollars (20 Million Rupees) to upgrade our factory making it of world level with high grade sophisticated production equipments producing all grades of Flanges with atomization and electric panel control with green technology.

Types of Flanges

• Threaded Flange
• Weld Neck Flange
• Slip On Flange
• Socket Weld Flange
• Blind Flange
• Lap Joint Flange
• Plate Flange
• Forged Flange

Lap Joint Flanges have all the same common dimensions as any other flange named on this page however it does not have a raised face, they used in conjunction with a “Lap Joint Stub End”.

These flanges are nearly identical to a Slip On flange with the exception of a radius at the intersection of the flange face and the bore to accommodate the flanged portion of the Stub End.

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 (Stub End).

Lap Joint flanges have certain special advantages:

• Freedom to swivel around the pipe facilitates the lining up of opposing flange bolt holes.
• Lack of contact with the fluid in the pipe often permits the use of inexpensive carbon steel flanges with corrosion resistant pipe.
• In systems which erode or corrode quickly, the flanges may be salvaged for re-use.

Lap joint flange specification

Lap Joint Flange Dimensions & Tolerances

Click on below to check industrial pipe fittings & steel flanges dimensions

• Dimensions of Buttweld Fittings (ANSI B 16.9 & B 16.28)
• Dimensions of Buttweld Fittings (ANSI B 16.9 & MSS SP 43)
• Dimensions of Class 150 Lap Joint Flange (ANSI B 16.5)
• Dimensions of Class 300 Lap Joint Flange (ANSI B 16.5)
• Dimensions of Class 600 Lap Joint Flange (ANSI B 16.5)
• Dimensions of Class 900 Lap Joint Flange (ANSI B 16.5)
• Dimensions of Class 1500 Lap Joint Flange (ANSI B 16.5)
• Dimensions of Class 2500 Lap Joint Flange (ANSI B 16.5)
• Dimensions of Socket-Welding Fittings (ANSI B16.11)
• Dimensions of Socket- Weld and Threaded Union
• Dimensions of Forged Threaded Fittings (ANSI B 16.11)
• Dimensions of Plugs & Bushings (ANSI B 16.11)
• Dimensions of Threaded Fittings (ANSI B 16.11)
• Dimensional Tolerances of Lap Joint Flange (As per ANSI B 16.5) (mm)
• Dimensional Tolerances of Fittings (ANSI B 16.9, B 16.28)

Lap Joint Flange Marking

Every Standards have clearly requirements for steel flanges’ marking style, usually the marking words include seller’s Logo, buyer’s Logo (OEM), standard number, flange’s type, flange’s pressure, flange’s size, flange’s material, place of origin, heat number and other words for convenient to trace. If the flanges repaired by welding, it must mark on flanges showing this flange repared by welding. If the flange’s dimensions (OD, ID, PCD, Thickness, Holes number, Holes diameter, Tolerance etc) are different with the normal standard, it also must mark on flanges where it is different with normal ones. Another important place is heat number marking, it is the tracing base for every piece flange, and from the heat number we can trace to the beginning of raw material import.

• The Marking Style for European Standards Flanges, DIN, UNI, EN 1092-1 norms etc
  LOGO, EN 1092-1, TYPE 01, PN16, DN80, 88.9, P265GH, HEAT NUMBER
• The Marking Style for ANSI, ASME Standards Flanges, ANSI, ASME, AWWA norms etc
  LOGO, ASME B16.5, CLASS 150#, SLIP-ON RF, A105, HEAT NUMBER
• The Marking Style For JIS, KS norms etc, special with KS Mark
  LOGO, JIS B2220, 5K, 80A, SOP, SF440A, HEAT NUMBER, KS MARK
• The Marking Style for BS 4504 norms etc
  LOGO, BS 4504, WELD NECK, PN40, DN80, RSt37.2, HEAT NUMBER
• The Marking Style for GOST 12820, GOST 12821 norms etc
  LOGO, GOST 12820, PN1.6MPA, DN80, Q235B, HEAT NUMBER
• The Marking Style for SABS 1123, SANS 1123 norms etc
  LOGO, SABS 1123, CLASS 4000/3, NB80, A105, HEAT NUMBER

Preparation Lap Joint Flange for shipment, handling and packaging

Carbon Steel Lap Joint Flange & Stainless Steel Lap Joint Flange are delivered with or without surface protection at the discretion of the manufacturer.

Lap Joint Flange are delivered by the manufacturer in normal packaging, without surface protection, and without end protectors (caps). Special packaging, protective coverings, and end protectors (caps) can be agreed.