Forged Bushing Manufacturer, Supplier & Exporter
A forged bushing has a male thread on the outside and a smaller female thread on the inside. Screwed into a larger fitting, it reduces the opening to accept a smaller pipe or instrument. Raaj Fittings manufactures and exports forged bushings to ASME B16.11 in hex head and flush (face) patterns, with NPT or BSP threads, in stainless steel, duplex, nickel alloys, carbon steel and alloy steel.
Bushings are the most compact way to reduce a threaded connection. They are used to fit gauges, transmitters, thermowells and small pipes into larger tapped openings on fittings, valves, pumps and vessels, without adding a separate reducer and nipple.
All bushings are supplied with EN 10204 3.1 mill test certificates, with 3.2 certification and third-party inspection on request.
We export forged bushings to EPC contractors, plant operators and stockists across the Middle East and GCC, Europe and the Americas — with NPT threads for US and Gulf projects or BSP threads where European and Middle Eastern specifications call for them.
Bushing Specifications
Outside (male) sizes ¼" NPS to 4" NPS, with any smaller inside (female) size
Hex head bushing and flush (face) bushing
NPT to ASME B1.20.1; BSPT and BSPP to BS 21 / ISO 7-1
Male size × female size, e.g. 1" × ½" hex bushing
Machined from forged bar or forged, then CNC machined and thread-gauged
EN 10204 3.1 mill test certificate as standard; EN 10204 3.2 on request
Materials & Grades
We supply forged bushings in the following materials and grades. All grades are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates.
Stainless Steel Forged Bushings
Stainless steel forged fittings deliver excellent corrosion resistance in chemical, pharmaceutical, food processing, and marine environments. All grades supplied to ASTM A182 specification.
(ASTM A182 F304 / F304L) General corrosion resistance; food processing, dairy, and chemical service
(ASTM A182 F316 / F316L) Superior chloride and acid resistance; pharmaceutical, offshore, and chemical processing
(ASTM A182 F316H) Elevated-temperature creep strength for high-temperature process service
(ASTM A182 F317 / F317L) Higher molybdenum content; superior corrosion resistance in concentrated acid service
(ASTM A182 F321) Titanium-stabilised; resists sensitisation at sustained elevated temperatures
(ASTM A182 F347) Columbium-stabilised; used in heat exchangers and high-temperature piping
Duplex & Super Duplex Stainless Steel Forged Bushings
Delivering approximately twice the yield strength of austenitic stainless steel with excellent resistance to stress corrosion cracking, pitting, and erosion — ideal for offshore, subsea, and chemical processing environments.
(UNS S31803 / S32205, ASTM A182 F51) Offshore topsides, chemical plant, and seawater cooling systems
(UNS S32750, ASTM A182 F53) Subsea equipment, desalination, and high-chloride offshore service
(UNS S32760, ASTM A182 F55) High-temperature, high-chloride offshore and subsea service applications
Nickel Alloy Forged Bushings
For the most severe corrosive, high-temperature, and sour service environments where standard stainless steel grades are insufficient.
(UNS N06600) High-temperature oxidation and carburisation resistance
(UNS N06625) Outstanding corrosion resistance; offshore, chemical, and subsea service
(UNS N08825) Resistance to phosphoric and sulfuric acids; FGD and chemical plant
(UNS N10276) Universal corrosion resistance across the widest range of aggressive media
(UNS N06022) Superior resistance to oxidising and reducing acids and pitting attack
(UNS N04400) Seawater, hydrofluoric acid, and marine and alkali service
(UNS N08020) Engineered for sulfuric acid and aggressive chemical process service
Exceptional corrosion resistance in seawater and oxidising media at low density
Carbon Steel Forged Bushings
Carbon steel is the standard material for forged fittings in general-purpose, hydrocarbon, steam, and elevated-temperature service. The primary grade for forged carbon steel fittings is ASTM A105.
Primary grade for forged carbon steel fittings and flanges — covers ambient and elevated-temperature service in pressurised piping systems.
Low-temperature carbon steel, impact-tested for service down to -46°C (-50°F) — LNG, cold climate, and cryogenic piping applications.
Low-temperature carbon steel, impact-tested to -101°C (-150°F) — for the most demanding cold-temperature service applications.
Alloy Steel Forged Bushings
Chromium-molybdenum alloy steel grades for high-temperature, high-pressure service in power generation, petrochemical, and refinery applications. All grades supplied to ASTM A182 specification.
(5% Cr · ½% Mo) Refinery hydroprocessing and high-temperature service
(9% Cr · 1% Mo) High-temperature steam and hydrogen-rich process service
(1¼% Cr · ½% Mo) Thermal power plant steam, feedwater, and reheat piping
(2¼% Cr · 1% Mo) Reactors and high-temperature pressure piping in petrochemical plants
(9% Cr · 1% Mo · V · Nb) Ultra-supercritical power plant main steam and hot reheat piping
Hex Bushing or Flush Bushing?
A hex head bushing has a hexagon collar that stands proud of the fitting it is screwed into, so it is easy to grip with a spanner and to remove later. A flush (face) bushing has no hex collar; it sits nearly level with the face of the fitting and is driven with a hex key or socket. Flush bushings are used where there is no room for a hex head, such as in closely spaced manifold ports.
- Reduces a threaded port — fit a ½" gauge into a 1" tapping, for example.
- Very compact — shorter than a reducer and nipple combination.
- Mixed threads — NPT outside and BSP inside, or vice versa, to order.
Good Practice
Each bushing adds a threaded joint that could leak, and stacking several bushings to make a large reduction is poor practice. Where a large reduction is needed, a swage nipple or a reducing tee is preferable. Some piping specifications restrict bushings in hazardous or high-pressure service; check before use.
Related Fittings
To close a threaded opening rather than reduce it, use a forged plug. Bushings, plugs and nipples are often ordered together for instrument hook-ups and small-bore threaded assemblies.
Applications & Industries
- Pressure gauge and transmitter connections
- Thermowell and instrument adapters on process piping and vessels
- Hydraulic and lube oil manifolds
- Pump, valve and compressor auxiliary connections
- Compressed air, water and utility lines
When ordering, give the male and female sizes, the pattern (hex or flush), the thread form for each end and the material grade — for example 1" × ½" hex bushing, NPT × NPT, ASTM A182 F316L. Bushings for oxygen, hydrogen or sour service can be supplied cleaned, tagged and certified to the project requirements.
See the complete range of forged fittings.
Testing, Inspection, Marking & Packing
Forged bushings are produced under our quality assurance process:
- Incoming material verification with PMI testing
- Chemical and mechanical testing to ASTM A105, A182 or the applicable specification
- Thread inspection of male and female threads with ring and plug gauges
- Dimensional inspection of hex size and overall length
- Marking with manufacturer’s mark, grade, sizes and heat number
Supplied with EN 10204 3.1 mill test certificates; EN 10204 3.2 certificates and third-party inspection are available on request.
Fittings are packed for export with plastic caps protecting threads and sockets, rust-preventive or VCI wrapping on carbon and alloy steel, and seaworthy wooden cases; marking, tagging and packing to your specification are available on request.
Why Choose Raaj Fittings for Forged Bushings?
Raaj Sagar Steels has supplied piping components since 2003 and today manufactures forged fittings at two plants in India for buyers in the Middle East, Europe and the Americas.
- Manufactured in-house — Forged bushings are made in our own plants, so material, dimensions and delivery stay under our control.
- Ready stock, short lead times — common sizes and grades are held in stock for prompt dispatch; other sizes, grades and specials are manufactured to order.
- Certified quality — ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 certified; PED 2014/68/EU and IBR supply available, and NACE MR0175 / ISO 15156 material on request.
- 100% material verification — PMI testing on incoming material and EN 10204 3.1 mill test certificates with every order; 3.2 certificates on request.
- Third-party inspection ready — we regularly work with SGS, Bureau Veritas, TÜV and DNV.
- Export documentation — MTCs, certificates of origin, packing lists and inspection reports to suit projects in the GCC, Europe and the Americas.
- Export packing — seaworthy packing with end and face protection, and packing to your specification on request.
- Fast response — our team replies to enquiries within one business day.
Forged Bushings — FAQs
A bushing is a threaded fitting with a male thread outside and a smaller female thread inside. It reduces a threaded opening to accept a smaller pipe or instrument.
A hex bushing has a hexagon collar for a spanner and stands proud of the fitting. A flush bushing sits almost level with the fitting face and is driven with a hex key.
Male size first, then female size — for example 1" × ½" means a 1" male thread with a ½" female thread.
Yes. Bushings with NPT on one thread and BSP on the other can be made to order to connect equipment from different standards.
No. Stacking bushings adds leak paths. For large reductions, use a swage nipple or reducing fitting instead.
Yes. We supply forged bushings for projects under the European Pressure Equipment Directive (PED 2014/68/EU), and with IBR certification for Indian boiler applications. NACE MR0175 / ISO 15156 compliant material is also available on request for sour service in the Middle East and the Americas.
