Pipe Nipple Manufacturer, Supplier & Exporter
A pipe nipple is a short length of pipe, threaded on one or both ends or left plain for welding, used to connect two fittings, valves or pieces of equipment that are close together. Raaj Fittings manufactures and exports pipe nipples from seamless pipe in stainless steel, duplex, nickel alloys, carbon steel and alloy steel, in schedules from SCH 40 to XXS.
Nipples are the connectors of small-bore piping. They join a valve to a tee, a gauge to a process connection, or a drain valve to its outlet, and they come in standard lengths from the shortest close nipple upwards, as well as cut to the exact length a hook-up needs.
All nipples are supplied with EN 10204 3.1 mill test certificates, with 3.2 certification and third-party inspection on request.
We export pipe nipples 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.
Pipe Nipple Specifications
⅛" NPS to 4" NPS
SCH 40, SCH 80, SCH 160 and XXS
Threaded both ends (TBE), threaded one end (TOE), plain both ends (PBE), plain / bevelled for welding
Close, short, long and barrel nipples, or cut to the length specified
Threads to ASME B1.20.1 (NPT) or BS 21 / ISO 7-1 (BSPT / BSPP); used with ASME B16.11 fittings
Cut from seamless pipe, threaded or end-finished and deburred
EN 10204 3.1 mill test certificate as standard; EN 10204 3.2 on request
Materials & Grades
We supply pipe nipples in the following materials and grades. All grades are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates.
Stainless Steel Pipe Nipples
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 Pipe Nipples
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 Pipe Nipples
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 Pipe Nipples
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 Pipe Nipples
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
Types of Pipe Nipple
- Close nipple — threaded over its whole length, with no plain section; the shortest possible connection between two female fittings.
- Short and long nipples — a plain section between the threads, in standard lengths that let a spanner be used.
- Barrel nipple — a short nipple with a clear plain section in the middle.
- TOE nipple — threaded one end and plain or bevelled at the other, to weld into a line and screw into a threaded valve or instrument.
- PBE nipple — plain both ends for socket weld assemblies.
Choosing the Schedule
Cutting a thread removes metal, so threaded nipples are usually made in a heavier wall than the pipe they connect — typically SCH 80 or SCH 160 — to keep enough strength at the root of the thread. Schedule 160 and XXS nipples are common in high-pressure vent, drain and instrument connections. Specify the schedule along with size, length, end types and thread form.
Nipples in Small-Bore Assemblies
Nipples connect to threaded couplings, tees and elbows, and to unions where the assembly must come apart. Where the size changes, a swage nipple joins two different pipe sizes in one piece. Short nipples used as vents and drains are particularly prone to vibration fatigue, so heavier walls and good bracing are recommended.
Applications & Industries
- Vent and drain connections on process piping
- Instrument and gauge hook-ups
- Valve-to-fitting connections in threaded systems
- Hydraulic and lube oil assemblies
- Utility air, water and steam piping
When ordering, give the size, schedule, length or nipple type, the end preparation at each end and the thread form — for example ¾" SCH 160 × 100 mm long, TOE NPT, ASTM A106 Gr. B seamless. Nipples are commonly ordered together with matching valves, couplings and caps for complete vent and drain assemblies.
See the complete range of forged fittings.
Testing, Inspection, Marking & Packing
Pipe nipples are produced under our quality assurance process:
- Pipe supplied with mill test certificates and verified by PMI testing
- Chemical and mechanical properties to the applicable ASTM pipe specification
- Thread inspection with NPT or BSP ring gauges
- Dimensional inspection of length, outside diameter, wall thickness and end finish
- Marking or tagging with grade, size, schedule 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 Pipe Nipples?
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 — Pipe nipples 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.
Pipe Nipples — FAQs
A pipe nipple is a short length of pipe, threaded on one or both ends or plain for welding, used to connect two closely spaced fittings, valves or pieces of equipment.
A close nipple is threaded along its whole length with no plain section, giving the shortest possible connection between two female threaded fittings.
TBE is threaded both ends, TOE is threaded one end (the other plain or bevelled), and PBE is plain both ends.
Usually heavier than the line pipe — SCH 80 or SCH 160 — because the thread reduces the wall thickness. XXS is used for very high pressures.
Yes. Besides standard close, short and long lengths, nipples can be cut to any length you specify.
Yes. We supply pipe nipples 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.
