Weld neck flanges are designed to be joined to a piping system by butt welding. Weld neck flanges is relatively expensive because of its long neck, but is preferred for high stress applications. The neck, or hub, transmits stresses to the pipe, reducing stress concentrations at the base of the flange. The gradual transition of thickness from the base of the hub to the wall thickness at the butt weld provides important reinforcement of the metal flange. The bore of the weld neck flanges matches the bore of the pipe, reducing turbulence and erosion.

These socket weld flanges are similar to a slip-on flange in outline, but the bore is counter –bored to accept pipe. The diameter of the remaining bore is the same as the inside diameter of the pipe. The socket weld flanges are attached to the pipe by a fillet weld around the hub of the flange. An optional interval weld may be applied in high stress application. Socket weld flanges's biggest use in high pressure systems such as hydraulic and steam lines.

Blind flanges are used to blank off the pipeline, valves or pumps. These flanges can also be sometime used as a inspection cover. Our range of blind flanges can be customized to meet the specifications and requirements of the clients.

These threaded metal flanges are similar to a slip-on flange in outline, but the bore is threaded, thus enabling assembly without welding. This obviously limits its applications to relatively low pressure piping systems. The threaded flanges may be welded around the joint after assembly, but this is not considered a satisfactory method of increasing its applications.

The function of an orifice flange is to provide access to a line for meeting off gases or liquids. An orifice flanges is clamped between a pair of flanges when installed in a line and the whole assembly is referred to as an orifice flange union. Jack-screws within the assembly facilitate removal of the orifice plate. The orifice plate, the metering device, consists of a thin plate with a concentric, square edge, circular hole in the center. Two pressure tap-holes are drilled in each orifice flange to measure pressure differences through the orifice.

The slip on flanges are slipped over the pipe then welded both inside and outside to provide sufficient strength and prevent leakage. These slip on flanges are used in preference to weld necks by many users because of its lower cost and the fact that less accuracy is required when cutting pipe to length.

Lap joint flanges is again similar to a slip-on flanges, but it has a radius at the intersection of the bore and the lap joint flanges face to accommodate a lap stub end. The face on the stub end forms the gasket face of the flange. This type of metal flange is used in applications where sections of piping systems need to be dismantled quickly and easily for inspection or replacement.

Our clients can avail from us a wide range of Reducing Flanges tat is designed in compliance with international quality standards. These are available in all types and pressures and are widely used for pipe-to-pipe connections. The reducing flange includes a flange with one specified diameter having a bore of a different and smaller diameter. Except for the bore and hub dimensions, the reducing flange will have dimensions of the larger pipe size. To increase the size of the flange, these are used at the outlet side of the expansion joint. It is the most economical method to make a transition in size.

Features:

• Durable
• Corrosion resistance
• High strength
• Dimensional accuracy
• Fine finish

Material Used:

• Carbon steel
• Stainless steel
• Alloy steel
• Brass
• Cast iron
• BronzeAluminum
• PVC

Types of Reducing Flanges:

 

• Welding Neck
• Slip-On
• Threaded
• Uses of Reducing Flanges:
• Reducing flanges are a little easier to bolt up than non-reducing flanges.
• They provide the most perfect solution when you need to connect different size flanges.
• These flanges are available in all types and pressures.
• Reducing flanges are fixed by welding, gluing or clamping flanges of equal dimensions provided with different connecting pieces.
• They offer the simplest and least expensive method of mating two different sized flanges.

Specifications:

• Alloy Steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91
• Carbon Steel : ASTM A 105, ASTM A 181
• Copper Alloys : Copper, Brass & Gunmetal
• Nickel Alloys : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276
• Size : 1/8" NB TO 48"NB.
• Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.
  
  

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