Threaded Reducer Fittings Manufacturer in India
Threaded Reducer Fittings Manufacturer in India
Sachiya Steel International is a leading Threaded Reducer Fittings Manufacturer in India, offering forged pipe fittings that join pipes and equipment of different sizes through threaded connections. Established in 2005, we have 20+ years of experience in supplying threaded reducers in carbon steel, stainless steel, alloy steel, duplex steel and nickel alloys. Our range includes reducing couplings, reducing bushings, reducing hex nipples and threaded swage nipples, with NPT and BSP threads.
We supply threaded reducer fittings in sizes from 1/8″ to 4″, with classes and wall thicknesses selected to suit project drawings. Material options include ASTM A105, A350 LF2, A182 F304/F304L, F316/F316L and duplex grades, subject to availability. As an ISO-certified, TÜV-approved and MSME-registered company, we can manufacture and export up to 100 tonnes per month, serving customers across 85+ countries with inspection and material documentation available as required.
What Are Threaded Reducer Fittings?
Threaded reducer fittings are forged pipe fittings that connect two pipes, or a pipe and a piece of equipment, of different sizes using threads instead of welds. The threads can be internal (female) or external (male), and the fitting can carry either type, or both. Common forms include the reducing coupling, the reducing bushing and the threaded swage nipple.
These fittings are used mainly in small-bore piping, instrument lines, hydraulic and pneumatic systems and equipment connections. They are manufactured to applicable standards such as ASME B16.11 for forged threaded fittings, with threads cut to ASME B1.20.1 for NPT or ISO standards for BSP. The required class, material grade and wall thickness depend on the pressure, temperature and fluid in the piping system.
Threaded Reducer Fittings
High-quality threaded reducer fittings are available in stainless steel, carbon steel, alloy steel, duplex and nickel alloys, with various sizes and threaded connections. Offered in grades such as SS 304, 316, ASTM A234 WPB, Duplex 2205 and Inconel 625, these fittings meet applicable standards for industrial piping, process plants and engineering applications.
Threaded Reducer Fittings Types We Supply
As an experienced threaded reducer fittings manufacturer, we offer different types to meet small-bore piping and equipment connection requirements.
- Reducing Coupling: Female threads on both ends join two pipes of different sizes in a straight line.
- Hex Head Reducing Bushing: A male thread on the outside and a female thread on the inside reduce the port size of a fitting, valve or pump.
- Flush Reducing Bushing: Offers a low-profile reduction where space around the connection is limited.
- Reducing Hex Nipple: Male threads on both ends connect two female ports of different sizes.
- Threaded Concentric Swage Nipple: Both ends share one centre line, with threads on one or both ends.
- Threaded Eccentric Swage Nipple: The small end is offset so one side stays flat, which helps in horizontal lines.
- Class 3000 and Class 6000 Threaded Reducer: Different body thicknesses are available for different pressure requirements.
- NPT and BSP Threaded Reducer: Tapered NPT threads or BSPT and BSPP threads are available, depending on the equipment standard.
- Stainless Steel Threaded Reducer: Available in grades such as F304, F304L, F316 and F316L for corrosive service.
- Alloy and Low-Temperature Threaded Reducer: Grades such as F11, F22 and LF2 suit high-temperature or low-temperature service, depending on the material.
- Duplex and Super Duplex Threaded Reducer: Used in applications that require high strength and resistance to corrosion, including offshore and seawater systems.
- Custom Threaded Reducer: Manufactured to specified sizes, thread types, lengths and material grades based on project requirements.
Why Choose Threaded Reducer Fittings?
Threaded reducer fittings let a crew change the size of a line without welding. A fitter can screw the fitting into place with standard tools, which helps in plants where hot work needs permits or where a welder cannot reach the joint. The same threaded joint can also be opened later to replace a valve, gauge or instrument, which makes these fittings useful for maintenance and plant extensions.
They also match small-bore pipe to equipment ports in a compact way. Pumps, valves, instruments and manifolds often have a port of one size and a pipe of another, and a reducing bushing or coupling can bridge that gap in a single fitting. Compared with using separate nipples and fittings, a threaded reducer can reduce the number of joints and the space required.
Selection depends on the service. Threaded joints are widely used in small-bore, moderate-pressure applications, while lines with strong vibration, thermal cycling or leak-sensitive fluids may call for socket weld or butt weld connections instead. The correct class, thread type, material grade and sealing method help the fitting meet the demands of the piping system, and we can recommend options based on your drawing and operating conditions.
Types of Reducers Fittings
Explore our range of industrial reducer fittings, including concentric reducers, eccentric reducers, swage reducers, threaded reducers, socket weld reducers and butt weld reducers for diverse piping applications.
Concentric Reducer Fittings
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Eccentric Reducer Fittings
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Swage Reducer Fittings
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Threaded Reducer Fittings
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Socket Weld Reducer Fittings
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Butt Weld Reducer Fittings
→Get Certified Threaded Reducer Fittings at Competitive Factory Prices
Threaded Reducer Fittings Specifications
| Property | Specification |
|---|---|
| Product Name | Threaded Reducer Fittings |
| Types | Reducing coupling, reducing bushing, reducing hex nipple, threaded swage nipple |
| Size Range | 1/8" to 4" NB |
| Pressure Class | 3000#, 6000# |
| Thread Types | NPT, BSPT, BSPP |
| Materials | Carbon steel, low temperature steel, alloy steel, stainless steel, duplex, super duplex, nickel alloys |
| Dimension Standards | ASME B16.11, MSS SP-95 (swage nipples), BS 3799 |
| Thread Standards | ASME B1.20.1 (NPT), ISO 7-1 (BSPT), ISO 228-1 (BSPP) |
| Material Standards | ASTM A105, A182, A350 |
| Construction | Forged and CNC machined |
| Surface Finish | Black, oil coated, galvanised, pickled, polished |
| Heat Treatment | Normalising, solution annealing |
| Testing | PMI, thread gauging, hardness, hydrostatic, dimensional |
| Certification | EN 10204 3.1, 3.2 on request |
| How to Order | Large size × small size, type, class, thread, grade and standard (for example: Reducing Coupling 1" × 1/2", Class 3000, NPT, A105, ASME B16.11) |
| Custom Work | Special threads, lengths, size pairs and grades |
Threaded Reducer Fittings Chemical Composition
Values are in %, maximum unless a range is shown.
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| A105 | 0.35 | 0.60–1.05 | 0.10–0.35 | 0.035 | 0.040 | 0.30 | 0.40 | 0.12 |
| A350 LF2 | 0.30 | 0.60–1.35 | 0.15–0.30 | 0.035 | 0.040 | 0.30 | 0.40 | 0.12 |
| A182 F304 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0–20.0 | 8.0–11.0 | – |
| A182 F304L | 0.030 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0–20.0 | 8.0–13.0 | – |
| A182 F316 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
| A182 F316L | 0.030 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0–18.0 | 10.0–15.0 | 2.0–3.0 |
| A182 F51 (UNS S31803) | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 |
A105 also carries up to 0.40% copper and 0.05% vanadium. Duplex F51 carries 0.08–0.20% nitrogen.
Threaded Reducer Fittings Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| A105 | 485 min | 250 min | 22 min |
| A350 LF2 Class 1 | 485–655 | 250 min | 22 min |
| A182 F304 / F316 | 515 min | 205 min | 30 min |
| A182 F304L / F316L | 485 min | 170 min | 30 min |
| A182 F51 | 620 min | 450 min | 25 min |
Threaded Reducer Fittings Size Chart
| Large × Small | Common Type | Where This Threaded Reducer Goes |
|---|---|---|
| 1/2" × 1/4" | Reducing bushing | Gauge and instrument connections |
| 3/4" × 1/2" | Reducing bushing | Sample points and small pump ports |
| 1" × 1/2" | Reducing coupling | Dosing and compressed air lines |
| 1" × 3/4" | Reducing coupling | Utility and skid piping |
| 1 1/4" × 1" | Reducing bushing | Cooling water and fuel lines |
| 1 1/2" × 1" | Reducing coupling | Boiler auxiliary and drain lines |
| 1 1/2" × 1 1/4" | Reducing bushing | Process branch connections |
| 2" × 1" | Swage nipple | Valve and equipment tie-ins |
| 2" × 1 1/2" | Reducing coupling | Pump suction and discharge connections |
| 3" × 2" | Swage nipple | Fire water and plant utility lines |
| 4" × 2" | Swage nipple | Steam and process supply lines |
| 4" × 3" | Reducing coupling | Main utility and process headers |
Threaded Reducer Fittings Dimension Chart (ASME B16.11)
The table shows the ASME B16.11 body dimensions of the threaded coupling family, which reducing couplings and bushings build on. A is the end-to-end length, D is the outside diameter, B and J are the minimum thread lengths. All dimensions are in mm.
| NPS | End-to-End (A) | OD Class 3000 (D) | OD Class 6000 (D) | Min Thread Length (B) |
|---|---|---|---|---|
| 1/8" | 32 | 16 | 22 | 6.4 |
| 1/4" | 35 | 19 | 25 | 8.1 |
| 3/8" | 38 | 22 | 32 | 9.1 |
| 1/2" | 48 | 28 | 38 | 10.9 |
| 3/4" | 51 | 35 | 44 | 12.7 |
| 1" | 60 | 44 | 57 | 14.7 |
| 1 1/4" | 67 | 57 | 64 | 17.0 |
| 1 1/2" | 79 | 64 | 76 | 17.8 |
| 2" | 86 | 76 | 92 | 19.0 |
| 2 1/2" | 92 | 92 | 108 | 23.6 |
| 3" | 108 | 108 | 127 | 25.9 |
| 4" | 121 | 140 | 159 | 27.7 |
We cut each threaded reducer to the size pair, length and thread on your drawing, since the exact body length changes with the type and the two sizes.
Threaded Reducer Fittings Grades We Supply
Different piping systems need materials that can handle specific temperatures, pressures and fluid conditions. Our range of threaded reducer fittings includes forged carbon steel ASTM A105 for oil, gas, steam, air and water lines, and ASTM A350 LF2 for low-temperature service. For boilers and power plants, we supply alloy steel ASTM A182 F11, F22 and F91 for high-temperature service.
For corrosive fluids and process lines, we offer stainless steel ASTM A182 F304, F304L, F316, F316L, F321 and F347. Duplex ASTM A182 F51 and F53, along with super duplex F55, suit demanding seawater and chloride-rich environments. We also supply Inconel, Monel and Hastelloy threaded reducer fittings for specialised applications. As an experienced threaded reducer fittings supplier, we provide material options based on project specifications and operating conditions.
Threaded Reducer Fittings Standards and Certifications
We manufacture threaded reducer fittings according to applicable industry standards to meet different piping requirements. As a threaded reducer fittings supplier in India, we offer forged threaded fittings to ASME B16.11 and BS 3799, swage nipples to MSS SP-95, and threads to ASME B1.20.1 for NPT, ISO 7-1 for BSPT and ISO 228-1 for BSPP. Our fittings follow the relevant material standards, including ASTM A105 for carbon steel, ASTM A182 for stainless, alloy and duplex steel, and ASTM A350 for low-temperature steel.
Our quality process includes material traceability, thread gauging, dimensional checks and inspection reports as required by the project. We can provide EN 10204 3.1 material test certificates, chemical and mechanical test reports, and positive material identification (PMI) reports. EN 10204 3.2 certification, third-party inspection and applicable quality or pressure equipment compliance documentation can also be arranged according to project requirements.
Threaded Reducer Fittings Applications
- Instrumentation and Control: Threaded reducer fittings adapt small-bore lines to gauges, transmitters and sample valves.
- Hydraulic and Pneumatic Systems: Reducing bushings and couplings connect pipe to cylinders, manifolds and filters of different port sizes.
- Oil and Gas Skids: Skid builders reduce small-bore process, vent and drain lines on wellhead and metering packages.
- Power Plants and Boilers: Alloy steel threaded reducers connect steam sampling and auxiliary lines at high temperature.
- Chemical Processing: Stainless steel 316L threaded reducers join dosing, sample and transfer lines of different sizes.
- Pump and Compressor Connections: Fitters match pipe sizes to equipment ports on pumps, compressors and seal flush lines.
- Fire Protection and Utilities: Contractors use threaded reducers in compact fire water, compressed air and fuel manifolds.
- Marine and Offshore: Shipyards fit threaded reducers on engine room, deck and seawater service piping, and many projects source them from a threaded reducer fittings supplier in India like us.
Threaded Reducer Fittings Manufacturing Capacity and Export Capability
Our manufacturing facility in Vasai, near Mumbai, has the capacity to produce up to 100 tonnes of threaded reducer fittings per month. We manufacture forged threaded reducers from 1/8" to 4" in carbon steel, stainless steel, alloy steel, duplex and other grades. With forging, heat treatment, machining and threading handled at one facility, we maintain better control over production and can accommodate different sizes, thread types and material grades in the same order.
We also have an export capacity of up to 100 tonnes per month and handle shipments ranging from sample quantities to full container loads. As a threaded reducer fittings supplier in India, we arrange shipments through Nhava Sheva (JNPT) and Mundra ports and manage export documentation in-house. Our products reach customers in 85+ countries, with a focus on proper packaging, smooth customs clearance and timely delivery.
Why Choose Us as Your Threaded Reducer Fittings Manufacturer in India?
Choosing the right threaded reducer fittings manufacturer in India means finding a supplier that understands your pipe sizes, thread types and project requirements. With over 20 years of experience in industrial steel products, we manufacture threaded reducer fittings for oil and gas, chemical processing, power generation and other industries. Our in-house production helps us maintain control over manufacturing, quality and delivery schedules.
We offer threaded reducer fittings in carbon steel, stainless steel, alloy steel, low-temperature steel, duplex, super duplex and nickel alloys. Our range covers reducing couplings, bushings, hex nipples and swage nipples, manufactured to applicable standards such as ASME B16.11 and MSS SP-95. We also supply elbows, tees, caps, flanges and other pipe fittings to support a wider range of piping requirements.
With a monthly production and export capacity of up to 100 tonnes, we supply products to customers in 85+ countries. Our ISO 9001:2015 and ISO 14001:2015 certifications, along with TÜV approval and MSME registration, support our commitment to quality and responsible manufacturing. We provide material test certificates and inspection reports as required, with a focus on competitive pricing, clear communication and delivery within agreed schedules.
Countries We Export To
We ship threaded reducer fittings to 85+ countries, and as one of the threaded reducer fittings suppliers that serve refineries, power stations, process skids and shipyards, we cover every major region.
- North America: USA, Canada and Mexico
- Europe: United Kingdom, Germany, France, Italy, Netherlands and Spain
- Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait and Bahrain
- Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam and Australia
- Africa: South Africa, Nigeria, Egypt and Kenya
- South America: Brazil, Chile and Peru
Each shipment carries an EN 10204 3.1 certificate, and we arrange 3.2 or third-party inspection on request. We pack for sea freight and prepare every export document ourselves, so cargo clears customs on schedule.