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Reducing Flanges

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Technolloy Inc manufactures reducing flanges for piping systems where different pipe diameters need to be connected securely without compromising mechanical integrity. These flanges provide a practical transition between larger and smaller pipe sizes while maintaining a reliable bolted connection. Manufactured for demanding industrial environments, reducing flanges can be supplied in stainless steel, carbon steel, alloy steel, duplex steel, and other engineering materials according to application requirements. Their controlled dimensions, accurate machining, and dependable construction make them suitable for process piping, pressure systems, petrochemical facilities, refineries, power plants, chemical processing units, and general industrial installations.

What Are Reducing Flanges?

Reducing flanges are pipe flanges designed to connect pipes, valves, fittings, or equipment having different nominal diameters. Unlike standard flanges that generally maintain the same bore size, a reducing flange incorporates a smaller bore while retaining a flange outside diameter and bolt configuration suitable for the connection. This design allows engineers to achieve a smooth and space-efficient pipe size transition without adding a separate reducer and flange arrangement in applications where an integrated solution is preferred.

The manufacturing process involves forging, forming, machining, drilling, heat treatment, and inspection according to the selected material grade and applicable specification. Technolloy Inc can supply reducing flanges in different pressure classes, nominal sizes, facing configurations, wall combinations, and dimensional requirements. Options can be engineered for ASME, ASTM, ANSI, DIN, EN, and other recognized standards, subject to project specifications. Accurate bore dimensions and bolt-hole positioning are particularly important because they support proper alignment, sealing, and installation performance.

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Reducing Flanges Manufacturers, Reducing Flanges Suppliers, Reducing Flanges Stockists, Reducing Flanges Exporters

Advantages of Reducing Flanges?

Reducing flanges are engineered to withstand mechanical loads, internal pressure, vibration, and thermal stresses encountered in industrial piping systems. Properly selected forged or machined materials provide the strength required for demanding service conditions. Their robust flange geometry also supports secure bolting and dependable joint integrity during operation.

Material selection allows reducing flanges to be matched with corrosive operating environments. Stainless steel, duplex stainless steel, nickel alloy, and suitable alloy steel grades can provide enhanced resistance against moisture, chemicals, chlorides, oxidation, and other corrosive agents. This helps protect the connection and contributes to reliable service in aggressive process conditions.

High-quality reducing flanges are designed for repeated exposure to pressure cycles, temperature variation, mechanical stress, and industrial operating conditions. Proper heat treatment, surface finishing, dimensional control, and inspection help improve service life. A durable flange connection can reduce premature replacement requirements and support consistent piping system performance over an extended operating period.

Selected flange materials can offer good machinability, allowing manufacturers to achieve precise bore dimensions, bolt-hole patterns, flange thickness, and facing requirements. Accurate machining is essential for proper mating with pipes and equipment. Consistent dimensional control also makes fabrication, assembly, inspection, and maintenance more efficient for engineering and procurement teams.

Reducing flanges can provide cost advantages when a piping layout requires a direct transition between different pipe sizes. Depending on the design, integrating the size reduction into the flange can reduce the number of separate components, connections, and installation operations. Their durability can also contribute to lower lifecycle costs by minimizing maintenance and replacement requirements.

Reducing Flanges Manufacturers in India, Reducing Flanges Suppliers in India, Reducing Flanges Stockists in India, Reducing Flanges Exporters in India

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Uses and Applications of Reducing Flanges?

Reducing Flanges Manufacturers supply engineered flange solutions for process piping where different pipe diameters must be joined while maintaining dependable pressure containment. They are used in chemical plants, manufacturing facilities, utility systems, and industrial processing lines where accurate connections and reliable service are essential.

Reducing Flanges Suppliers support oil and gas projects with flange configurations suitable for pipelines, processing equipment, separators, storage systems, and related piping infrastructure. Material and pressure requirements can be selected according to operating temperature, fluid characteristics, pressure rating, and applicable project specifications.

Reducing Flanges Stockists provide components used in refinery and petrochemical piping networks where space management, dimensional accuracy, and material compatibility are important. These flanges can be incorporated into systems handling hydrocarbons, process chemicals, steam, cooling fluids, and other industrial media.

Reducing Flanges Exporters serve power generation projects where reliable piping connections are required across steam, condensate, cooling water, fuel, and auxiliary systems. Suitable grades and pressure classes can be selected for conventional, combined-cycle, and other industrial power applications based on engineering requirements.

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Reducing Flanges Manufacturers in Mumbai, Reducing Flanges Suppliers in Mumbai, Reducing Flanges Stockists in Mumbai, Reducing Flanges Exporters in Mumbai

Quality and Manufacturing Excellence

Technolloy Inc serves international buyers requiring engineered flange products for demanding industrial applications. Reducing flanges can be manufactured according to specified material grades, dimensions, pressure classes, facing types, testing requirements, and documentation needs. The product is suitable for industries including oil and gas, petrochemicals, refineries, chemicals, power generation, marine engineering, water treatment, construction, and general process engineering.

Reducing flanges may be produced from carbon steel, stainless steel, alloy steel, duplex stainless steel, and specialized alloys depending on the service environment. Manufacturing and inspection can be aligned with applicable ASME, ASTM, ANSI, DIN, and EN requirements. Material certificates, dimensional inspection, hardness testing, non-destructive testing, and other quality documentation can be provided when specified by the purchase order or project requirements.

Technolloy Inc supports domestic and international procurement requirements by offering reducing flanges in customized sizes and specifications. Buyers can specify nominal diameter, pressure class, material grade, flange face, bore, thickness, drilling configuration, surface finish, and testing requirements. Custom dimensions can be manufactured according to approved drawings and technical specifications, making the products suitable for replacement, maintenance, new construction, and engineered piping projects.

Specification of Reducing Flanges?

Size: 1/2"NB TO 24"NB IN
Class: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN Standard ND-6,10, 16, 25, 40 Etc.
Materials: Monel :
Grade: Monel 400, Monel K500, Monel R-405
Nickel :
Grade: Nickel 200, Nickel 201
Inconel :
Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
Incoloy :
Grade: Incoloy 800, Inconel 800H, 800HT
Hastalloy :
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Titanium :
Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
Stainless Steel :
Grade: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
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
Duplex Steel:
Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61
Alloy Steel:
Grade : ASTM A182 F1, F5, F9, F11, F22, F91
Value Added Service: CNC Machine, Customized Flanges
Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Dimension of Reducing Flanges?

NPS DIAMETER THICKNESS DIA. WELDING MIN. MIN. MIN. NECK WELDING JOINT
DN O T A B C D E F G H
1/2 5.25 1.19 1.38   0.88 .90 0.93 2.88 1.56 1.56
15 133 30.5 34.9   22.2 22.9 23.5 73.0 40 40
3/4 5.50 1.25 1.69   1.09 1.11 1.14 3.12 1.69 1.69
20 140 32.0 42.9   27.8 28.2 29.0 79.4 43 43
1 6.25 1.38 2.00   1.36 1.38 1.41 3.50 1.88 1.88
25 159 35.0 50.8   34.5 34.9 36.0 88.9 48 48
1 1/4 7.25 1.50 2.50   1.70 1.72 1.75 3.75 2.06 2.06
32 184 38.5 63.5   43.3 43.7 44.5 95.2 52 52
1 1/2 8.00 1.75 2.88   1.95 1.97 1.99 4.38 2.38 2.38
40 203 44.5 73.0   49.6 50.0 50.5 111.4 60 60
2 9.25 2.00 3.62 To be 2.44 2.46 2.50 5.00 2.75 2.75
50 235 51.0 92.1   61.9 62.5 63.5 127.0 70 70
2 1/2 10.50 2.25 4.12 specified 2.94 2.97 3.00 5.62 3.12 3.12
65 267 57.5 104.8   74.6 75.4 76 142.9 79 79
3 12.00 2.62 5.00 by 3.57 3.60 3.63 6.62 3.62 3.62
80 305 67.0 127.0   90.7 91.4 92 168.2 92 92
4 14.00 3.00 6.19 purchaser 4.57 4.60 4.63 7.50 4.25 4.25
100 356 76.5 157.2   116.1 116.8 118 190.5 108 108
5 16.50 3.62 7.31   5.66 5.69 5.69 9.00 5.12 5.12
125 419 92.5 185.7   143.7 144.5 145 228.6 130 130
6 19.00 4.25 8.50   6.72 6.75 6.75 10.75 6.0 6.0
150 483 108.0 215.9   170.7 171.4 171 273.0 152 152
8 21.75 5.00 10.62   8.72 8.75 8.75 12.50 7.0 7.0
200 552 127.0 269.9   221.5 222.2 222 317.5 178 178
10 26.50 6.50 12.75   10.88 10.92 10.88 16.50 9.0 9.0
250 675 165.5 323.8   276.2 277.4 276 419.4 229 229
12 30.00 7.25 15.00   12.88 12.92 12.94 18.25 10.0 10.0
300 760 184.5 381.0   327.0 328.2 329 463.6 254 254

Application Of Industries

Power Plants
1
Aerospace
2
Refineries
3
Construction
4
Import Export
5
Oil & Gas
6
Sugar
7
Chemical
8
Petrochemical
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Frequently Asked Questions

A reducing flange connects piping components with different nominal diameters while providing a flanged bolted connection. It can simplify certain piping arrangements by combining the flange connection and diameter transition into one component.

Reducing flanges can be manufactured in carbon steel, stainless steel, alloy steel, duplex stainless steel, and other suitable alloys. The appropriate material depends on pressure, temperature, corrosion conditions, fluid characteristics, and project specifications.

Reducing flanges can be manufactured according to applicable ASME, ASTM, ANSI, DIN, EN, and related international specifications. The required standard should be confirmed according to the piping design and procurement specification.

Yes. Customized reducing flanges can be produced according to approved drawings, material grades, dimensions, pressure classes, drilling patterns, facing requirements, testing requirements, and other technical specifications.

Pricing depends on material grade, nominal size, pressure rating, flange configuration, machining requirements, quantity, testing, surface treatment, documentation, and delivery requirements. Final pricing is determined according to the customer's specific technical and commercial requirements.

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