KWALITY STEEL (INDIA)

Kamathipura, Mumbai, Maharashtra

Pipe Flanges

Blind Flanges

Lap Joint flanges are used on piping fitted with with lapped pipe or with lap joint stub ends. The lap joint flange with the stub end assembly are normally used in systems requiring frequent dismantling for inspection and cleaning and where the ability to swivel flanges and to align bolt holes materially eases the erection of large diameter or unusually stiff piping. These flanges are also used in applications where there is a need to facilitate bolt alignment. These type of flanges are similar to slip-on flanges. The only difference is that it has a curved radius at the bore and face to accommodate a lap joint stub end. They may be used at all pressures and are available in a full size range. These lap joint flanges slip over the pipe, and are not welded. They are otherwise fastened to it. Here the bolting pressure is transferred to the gasket by the pressure of the flange against the back of the pipe lap.

Orifice flanges are used instead of the standard pipe flanges when orifice plate or flow nozzle is used. The basic purpose for this is to measuring the flow rate of either gases or liquids in the respective pipeline. These flanges are used in various industrial applications and are available in various sizes and materials. Specifications: Stainless Steel Grades: 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430 Nickel Alloy Grades: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), Hestelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020) Size :1/8" NB TO 48"NB. Class :150#, 300#, 400 #, 600#, 900#, 1500# & 2500 #. Uses of Reducing Flanges:

• Reducing flanges are used in pipe-to-pipe connections.
• 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

Reducing flanges are designed for use in changing diameters in a piping system. A reducing flange comprises 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. These flanges are used at the outlet side of the expansion joint to increase the size of the flange. This is considered to be an economical method to make a transition in size.

Uses of Reducing Flanges:

• Reducing flanges are used in pipe-to-pipe connections.
• 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.

A Slip-On Flange is bored sightly larger than the outer Diameter of the matching pipe. The pipe slip into the flange prior to welding both inside and outside to prevent leaks.The British standard flanges manufactured by us pertain to all standards like BS10 1962 Table D, E, F, H IS 6392 Table 5, 17, 26 IS 1538 in slip. These are manufactured using mild steel both in slip-on and blind type. Our quality slip on flanges are ideal for lower pressure applications. Their ease of fitting and welding reduces fabrication costs. Our professional engineering team is involved in innovating durable and high-quality products to cater to our clients' needs. Detailed Product Description of Slip-On Flange :The slip-on flange has a low hub because the pipe slips into the flange prior to welding. It iswelded both inside and out to provide sufficient strength and prevent leakage.They are ideal forlow pressure applications. Material specifications: Stainless steel:304, 304h, 304l, 310, 316, 316h, 316l, f10, 321 Standard dimensions: strong Ranging:0.5" to 24" as per ANSI b16.5, bs 4504, bs-10, asme b 16.36. 26" - 72" as per mss sp44, api -605, awwac-207-55, asme b 16.47, bs 3263 Standard ratings:Pounds:150, 300, 400, 600, 900, 1500 and 2500 Standard facing:

Raised face, ring - type, flat face, male - female, tongue - groove.welded both inside and out to provide sufficient strength and prevent leakage.They are ideal for low pressure applications.

• Low cost installation
• Less time needed to spent on ensuring the accuracy of the cut pipe
• They are somewhat easier to align
• The slip-on flanges have low hub because the pipe slips into the flange before welding
• The flange is welded both inside and outside to provide sufficient strength
• They prevent leakage

Threaded Flanges are confined to special applications. Their chief merit lies in the fact that they can be assembled without welding this explains their use in extremely high pressure services, particularly at or near atmospheric temperature, when alloy steel is essential for strength and where the necessary post weld heat treatment is impractical. Threaded Flanges are unsuited for conditions involving temperature or bending stresses of any magnitude, particularly under cyclic conditions, where leakage through the threads may occur in relatively few cycles of heating or stress; sea welding is sometimes employed to overcome this, but cannot be considered as entirely satisfaction.

• Threaded flanges can be fitted to pipes of various sizes without welding and this is one chief benefit for which these flanges are highly demanded.
• They can be used in extremely high pressure applications, particularly at or near atmospheric temperature, where the necessary post weld heat treatment is not possible.
• They are ideal for small diameter piping applications.
• They are economical and time saving devices.
• These threaded flanges are normally designed for non-cyclic applications.
• The flanges are suitable to be used in applications where welding is hazardous.
• They can be used in highly explosive areas.

Weld Neck Flanges are drilled(machined) with the wall thickness of the flange having the same dimensions of the matching pipe, the lighter the pipe is, the larger the bore, conversely, the heavier the pipe, the small the bore, they are normally used for highpressure, cold or hot temperature Notes : Flange dimensions to ANSI B16.5. Dimensions "B" & "D" includes raised face thickness.Bore (SCH) "C" purchasess to Specity.Larger outlet sizes are avilable on applications.ANSI 150# / 300# 2mm Raised Face. ANSI 600# / 2500# 7mm Raised Face. Materials used: Stainless Steel, Nickel Alloy etc

Specifications: Tube OD sizes:3/8 to 2 inches Materials: Flange:304 or 316L stainless steel O-rings:Viton, Buna, & silicone Fasteners:Wingnut, SureSeal, bulkhead & EVAC clamps Vacuum range Elastomer seal: >=1 x 10^-8 Torr - High vacuum EVAC metal seal: >=1 x 10^-11 Torr - UHV Temperature range Viton:-20C to 200C Silicone:-50C to 230C Buna:-30C to 110C EVAC metal seal:-270C to 150C

This is the most common type of high pressure pipe flange. They are distinguished from other types of pipe flanges by their long tapered hub and gentle transition of thickness in the region of the butt weld joining them to the pipe. The long tapered hub provides an important reinforcement of the weld neck flange proper in terms of strength and resistance to dishing.

• The weld neck flange is very resistant to dishing and has a very sturdy connection because it has the pipe along with the tapered hub.
• The flanges are ideal for extreme fluctuations of temperature.
• They are ideal in environments where there may be a lot of bending and handling of the flanges.
• Preferred in an environment with extreme temperature conditions.
• This type of flange is preferred for every severe service conditionresulting from high pressure or from sub-zero or elevated temperature.
• They are used in situations where loading conditions are substantially constant or fluctuate between wide limits.
• This is probably the best welding flange available because of its high, heavy neck.
• Highly recommended wherever a sound welded joint connection is needed.

Large-diameter steel flange is made of carbon steel and stainless steel flanges. Good ductility low carbon intensity is low, after adding suitable amount of carbon will become hard, plastic lower intensity increased. Flange connection may need to withstand very high tensile, compression, torsion, shear strength, carbon steel flange is the better choice.Independently developed by the factory cold Volume flange equipment and advanced technology. Portland opened up a law without CALCINED made the production of welding and many of the processes, raw materials, forming a one-time, that is, to speed up the production process and efficiency, while product quality has been ensured. Related products include:large diameter flange piece, large diameter stainless flanges, stainless large diameter flanges, large diameter flat welding flanges, large diameter butt welded flange

Socket welding flange, a popular type of pipe flange, was initially developed for use on small-sized high- pressure piping. The fabrication of this type of flange is similar to that of aslip-on flange. However, the internal pocket of a socket weld flange allows for a smooth bore and better fluid flow. When provided with an internal weld, the static strength of this flange is equal to slip-on flange, but the fatigue strength is 50% greater than double welding slip-on flanges. Smooth bore conditions in such a flange can easily be attained without having to bevel the flange face and, after welding, to re-face the socket weld flange as would be required with slip-on flanges. For this reason, the internally welded flange is popular in chemical process piping. The counter bore is sightly larger than the Outer Diameter of the matching pipe, allowing the pipe to be inserted. A restriction is built into the bottom of the bore, which acts as a shoulder for the pipe to rest on, and has the same I.D. of matching pipe. The flow is not restricted in any direction.

• They are ideal for small diameter applications.
• They are used for high pressure applications.
• Socket weld flanges have an internal recess on the inside diameter which allow for a smoot flow of the process fluid.
• They create a smooth bore with the proper welding and grinding.

Note: Flange dimensions to ANSI B16.5. Dimensions "B" & "D" includes raised face thickness. Bore (SCH) "C" purchasess to Specity. Larger outlet sizes are avilable on applications.ANSI 150# / 300# 2mm Raised Face. ANSI 600# / 2500# 7mm Raised Face.

Separating one part of a line from another requires a spectacle blind, able to switch from closed to open and back again. Bleed rings provide a means to release pressure from the pipe through a controlled opening. Materials used: Stainless Steel:ASTM A182 F304/304L, F316/316L, F316H, F316Ti, F321, F44(UNS S31254) Key Features:

Can be attached to the pipe without welding (sometimes an additional seal weld is used as well) Ideal for higher pressure and temperature applications for small pipe sizesNot recommended for larger loads, especially when subjected to higher torque

• Threaded flanges can be fitted to pipes of various sizes without welding and this is one chief benefit for which these flanges are highly demanded.
• They can be used in extremely high pressure applications, particularly at or near atmospheric temperature, where the necessary post weld heat treatment is not possible.
• They are ideal for small diameter piping applications.
• They are economical and time saving devices.
• These threaded flanges are normally designed for non-cyclic applications.
• The flanges are suitable to be used in applications where welding is hazardous.
• They can be used in highly explosive areas.

The first and most widely used type are spec blinds short for spectacle: these are flanges with two equal outside diameter (OD) parts welded together by way of a bridge. One of the parts also contains an inside diameter (ID), while the other is a blank, or blind. A whole is put at the halfway mark of the bridge. These are also called spectacles, figure 8s, and figure 8 blanks, because of their resemblance to reading glasses (spectacles) and figure 8s. These are referred to as Line Blanks in the ASME/ANSI standards. The second and third types are quite similar: both have longer bridges, referred to as paddles, which resemble longer handles. One type has only an OD, and so is a blind plate similar in appearance to a large pizza oven peel. These are referred to as paddle blinds. The other type is exactly the same but comes with an ID as well, enabling flow-through when installed in a piping system. These pieces have holes in the paddle which enables field personnel to determine by sight which piece is installed in a system. These are referred to as paddle spacers, and are often supplied in sets together with the paddle blinds. All 3 types of these flanges are used in piping systems or pressure vessels where the flow needs to be interrupted from time to time. They are installed between two pipe flanges (as specified above), and by way of a screw inserted into the hole in the bridge or paddle, they are able to rotate or swing into and out of position to interrupt or allow the flow, as the user sees fit.