Stainless steel threaded pipe fittings are stainless steel pipe connectors that use threaded connection. They use the internal and/or external threads of the pipe fittings to screw together with pipes or equipment with corresponding threads to achieve functions such as pipe extension, diversion, branching, diameter reduction or closure. In pipeline engineering, it is widely used in various industrial and civil fields, such as petroleum, chemical industry, building water supply and drainage, etc.
Features of Stainless Steel Threaded Pipe Fittings
Strong corrosion resistance: Stainless steel material itself has excellent corrosion resistance, able to resist the erosion of a variety of chemical media, to ensure the long-term stable operation of the piping system.
Convenient installation: Threaded connection is a non-welded connection, which is very convenient and quick to install and disassemble, and does not require professional welding equipment and skills, greatly reducing the construction difficulty and cost.
Repeatable: Threaded connection allows repeated disassembly and installation of pipe fittings, which is convenient for maintenance, remodeling or relocation of piping systems.
Wide range of application: Widely used in a variety of piping material requirements and pressure level is not too high fluid transportation system.
Sealing: Reliable sealing can be realized through the screwing of threads and sealing materials.
ASME B16.11 Threaded Pipe Fittings Specification
Size: 1/4″ to 4″ ( DN6 to DN100)
Pressure Rating: Class 2000, 3000, 6000 LBS
Standard: ASME B16.11, BS3799, MSS SP-79 / 83 / 85 / 97
Type: Threaded Elbow, Tee, Cross, Cap, Coupling, Boss, Plug, Bushing and Union.
Material: ASTM A105, A350 LF2/LF3, A182 F5, F9, F11, F12, F22, F91, F304/304L, F316/316L, F317, F310S, F321, F347, F904.
Stainless Steel Threaded Pipe Fittings — Manufacturing Standards
| Standard Code | Standard Name | Region / Organization |
| ASME B16.11 | Forged Fittings, Socket-Welding and Threaded | USA (ASME) |
| ASTM A182 | Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings | USA (ASTM) |
| EN 10241 | Steel threaded pipe fittings | European (EN) |
| DIN 2999 / DIN EN 10226 | Pipe threads where pressure-tight joints are made on the threads (BSPT) | Germany (DIN) / EU |
| BS 3799 | Steel pipe fittings, screwed and socket-welding for the petroleum industry | UK (British Standard) |
| MSS SP-83 | Class 3000 Steel Pipe Unions, Socket-Welding and Threaded | USA (MSS) |
Thread Type
Tapered Pipe Thread.
NPT (National Pipe Taper): American National Tapered Pipe Threads are tapered on both the inner and outer threads, and rely on a tight fit on the threads themselves and a thread sealant to achieve a seal.
BSPT (British Standard Pipe Taper Thread) / R-Series: British Standard Pipe Taper Threads with a tapered male thread and either a tapered (Rc) or parallel (Rp) female thread, usually requiring a sealant to make a seal.
Parallel Pipe Thread.
BSPP (British Standard Pipe Parallel Thread) / G Series: British Standard Parallel Pipe Threads are straight parallel threads on both the internal and external sides. These threads do not provide a seal and rely on a washer, O-ring or other sealing device to seal either on the end of the thread or inside the thread.
Stainless Steel Threaded Pipe Fittings Dimensions
Elbow & Tee & Cross Dimension
| Threaded 45 Elbow | Threaded 45 ° Elbow | Threaded Tee | Threaded Cross | ||||||||||||
| Nominal Size | Center-to-End | Outside Diameter of Band | Wall Thickness | Length of Thread | |||||||||||
| DN | NPS | A | H | G min | L5 min | L2 min | |||||||||
| 90° Elbows, Tees, Crosses | 45 ° Elbows | ||||||||||||||
| 2000 | 3000 | 6000 | 2000 | 3000 | 6000 | 2000 | 3000 | 6000 | 2000 | 3000 | 6000 | ||||
| 6 | 1/8
1/4 3/8 |
21 | 21 | 25 | 17 | 17 | 19 | 22 | 22 | 25 | 3.18 | 3.18 | 6.35 | 6.4 | 6.7 |
| 8 | 1/4 | 21 | 25 | 28 | 17 | 19 | 22 | 22 | 25 | 33 | 3.18 | 3.30 | 6.60 | 8.1 | 10.2 |
| 10 | 3/8 | 25 | 28 | 33 | 19 | 22 | 25 | 25 | 33 | 38 | 3.18 | 3.51 | 6.98 | 9.1 | 10.4 |
| 15 | 1/2 | 28 | 33 | 38 | 22 | 25 | 28 | 33 | 38 | 46 | 3.18 | 4.09 | 8.15 | 10.9 | 13.6 |
| 20 | 3/4 | 33 | 38 | 44 | 25 | 28 | 33 | 38 | 46 | 56 | 3.18 | 4.32 | 8.53 | 12.7 | 13.9 |
| 25 | 1 | 38 | 44 | 51 | 28 | 33 | 35 | 46 | 56 | 62 | 3.68 | 4.98 | 9.93 | 14.7 | 17.3 |
| 32 | 1 1/4 | 44 | 51 | 60 | 33 | 35 | 43 | 56 | 62 | 75 | 3.89 | 5.28 | 10.59 | 17.0 | 18.0 |
| 40 | 1 1/2 | 51 | 60 | 64 | 35 | 43 | 44 | 62 | 75 | 84 | 4.01 | 5.56 | 11.07 | 17.8 | 18.4 |
| 50 | 2 | 60 | 64 | 53 | 43 | 44 | 52 | 75 | 84 | 102 | 4.27 | 7.14 | 12.09 | 19.0 | 19.2 |
| 65 | 2 1/2 | 76 | 83 | 95 | 52 | 52 | 64 | 92 | 102 | 121 | 5.61 | 7.65 | 15.29 | 23.6 | 28.9 |
| 80 | 3 | 86 | 95 | 106 | 64 | 64 | 79 | 109 | 121 | 146 | 5.99 | 8.84 | 16.64 | 25.9 | 30.5 |
| 100 | 4 | 106 | 114 | 114 | 79 | 79 | 79 | 146 | 152 | 152 | 6.55 | 11.18 | 18.67 | 27.7 | 33 |
Coupling & Boss & Cap Dimension
| Coupling | Half-Coupling | Boss | Cap | |||||||
| Nominal Size | End-to-End | End-to-End | Outside Diameter | End Wall | Length of Thread | |||||
| DN | NPS | W | P | D | G min | L5 min | L2 min | |||
| 3000 & 6000 | 3000 | 6000 | 3000 | 6000 | 3000 | 6000 | ||||
| 6 | 1/8 | 32 | 19 | 16 | 22 | 4.8 | 6.4 | 6.7 | ||
| 8 | 1/4 | 35 | 25 | 27 | 19 | 25 | 4.8 | 6.4 | 8.1 | 10.2 |
| 10 | 3/8 | 38 | 25 | 27 | 22 | 32 | 4.8 | 6.4 | 9.1 | 10.4 |
| 15 | 1/2 | 48 | 32 | 33 | 28 | 38 | 6.4 | 7.9 | 10.9 | 13.6 |
| 20 | 3/4 | 51 | 37 | 38 | 35 | 44 | 6.4 | 7.9 | 12.7 | 13.9 |
| 25 | 1 | 60 | 41 | 43 | 44 | 57 | 9.7 | 11.2 | 14.7 | 17.3 |
| 32 | 1 1/4 | 67 | 44 | 46 | 57 | 64 | 9.7 | 11.2 | 17.0 | 18.0 |
| 40 | 1 1/2 | 79 | 44 | 48 | 64 | 76 | 11.2 | 12.7 | 17.8 | 18.4 |
| 50 | 2 | 86 | 48 | 51 | 76 | 92 | 12.7 | 15.7 | 19.0 | 19.2 |
| 65 | 2 1/2 | 92 | 60 | 64 | 92 | 108 | 15.7 | 19.0 | 23.6 | 28.9 |
| 80 | 3 | 108 | 65 | 68 | 108 | 127 | 19.0 | 22.4 | 25.9 | 30.5 |
| 100 | 4 | 121 | 68 | 75 | 140 | 159 | 22.4 | 28.4 | 27.7 | 33.0 |
Plug & Bushing Dimension
| Square Head Plug | Hex Head Plug | Round Head Plug | Hex Head Bushing | Flush Bushing | |||||
| Nominal Size | Length | Width Flats | Length | Hex Height | |||||
| DN | NPS | Amin | B min | C min | E nom | D min | H min | G min | F nom |
| 6 | 1/8 | 10 | 6 | 7 | 10 | 35 | 6 | 11 | |
| 8 | 1/4 | 11 | 6 | 10 | 14 | 41 | 6 | 3 | 16 |
| 10 | 3/8 | 13 | 8 | 11 | 18 | 41 | 8 | 4 | 18 |
| 15 | 1/2 | 14 | 10 | 14 | 21 | 44 | 8 | 5 | 22 |
| 20 | 3/4 | 16 | 11 | 16 | 27 | 44 | 10 | 6 | 27 |
| 25 | 1 | 19 | 13 | 21 | 33 | 51 | 10 | 6 | 36 |
| 32 | 1 1/4 | 21 | 14 | 24 | 43 | 51 | 14 | 7 | 46 |
| 40 | 1 1/2 | 21 | 16 | 28 | 48 | 51 | 16 | 8 | 50 |
| 50 | 2 | 22 | 18 | 32 | 60 | 64 | 18 | 9 | 65 |
| 65 | 2 1/2 | 27 | 19 | 36 | 73 | 70 | 19 | 10 | 75 |
| 80 | 3 | 28 | 21 | 41 | 89 | 70 | 21 | 10 | 90 |
| 100 | 4 | 32 | 25 | 65 | 114 | 76 | 25 | 13 | 115 |
Types of Threaded Pipe Fittings
Threaded Elbow
A threaded elbow is a pipe fitting used to change the direction of a pipe, with threads on one or both ends. It usually consists of an elbow body and a threaded part. The bending part of the elbow body is generally 90° or 45°.
Threaded Tee
Threaded Tee is usually used in some low-pressure small-diameter pipeline systems. It can divide the pipeline into three branches and form a 90-degree angle between the three branches.
Threaded Cross
Threaded Cross is a pipe connector with four openings, usually used to divide the pipe system into four different directions to achieve the diversion of the medium.
Threaded Coupling
The threaded coupling is a simple but important pipe connection fitting. Its main structure is a hollow cylinder with threads inside. The threads at both ends of the couplings are usually of the same specification so that it can be connected to threaded pipes of the same diameter.
Threaded Cap
A threaded cap is a pipe fitting used to close the end of a pipe. It is mainly composed of a cap body and a threaded part. The cap body is a hemispherical or flat-top structure with a hollow interior to fit the outer diameter of the pipe. The threaded part is located at the open end of the cap body and is usually machined with internal or external threads, depending on the thread type of the pipe or pipe fitting it matches.
Threaded Nipple
A nipple, as the name implies, is a short tube with threads on both ends. Depending on the type of thread, it can be categorized into various forms, such as double male nipple with male threads on both ends, or male and female nipple with male threads on one end and female threads on the other.
Threaded Bushing
A bushing, also known as a buchen or reducer, is a type of tubing used for connecting different sizes of threaded fittings. It has a female thread on one end and a male thread on the other, and is used to convert between large and small diameters by matching the internal and external threads.
Threaded Plug
Plugs are threaded pipe fittings used to close off the end of a pipe or an unused connection. They come in two main forms, caps, which are usually used to close off the outside of a pipe, and plugs, which are usually used to close off the inside threads or ports of a pipe.
Applications
Water treatment systems: pure water, wastewater treatment, industrial circulating water, etc.
Food and beverage industry: piping with high requirements for hygiene and corrosion resistance.
Pharmaceutical industry: clean piping system.
Chemical and petrochemical industry: conveying corrosive media.
Instrumentation piping systems: connections in precision instrumentation and control systems.
Gas and liquefied gas piping: low pressure gas transportation.
General industrial fluids: compressed air, steam, oil, etc.
Stainless Steel Pipe Fittings Supplier/Manufacturer
ZIZI specialize in selling all kinds of stainless steel threaded pipe fittings, tubes, plates, flanges, bolts and nuts, our products are widely used in many fields, from precision machinery manufacturing to warm home decoration and even high-end aerospace industry. We have become a trusted choice for many industries due to our superior product quality and wide range of applications. Not only do we offer a wide range of products, but we can also provide customized processing services according to the specific needs of our customers, ensuring that your expectations are accurately met every time we work together. With advanced production equipment and strict quality management system, we are committed to providing high-quality piping solutions to customers worldwide. Welcome to contact us.
You can get an offer for products in below material forms:
-Pipe and Tube (EN 10216-5, ASTM A213, ASTM A249, A312, A790,)
-Forged Fitting and Flange (ASTM A182 , ASTM A105,ASTM B564 )
-Butt Weld Fittings (ASTM A234, ASTM A403,ASTM A815)
-Round bar , Billet (ASTM A276, ASTM A479)
– Plate, Sheet, Strip(ASTM A240, EN 10028-7, A480)
-Bolting, Nuts（ASTM A193, A194, A320）
Stainless Steel Threaded Pipe Fitting Exported Countries
We Export stainless steel threaded pipe fitting to Saudi Arabia, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Cambodia, Argentina, Bolivia, Brazil, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Jamaica, Bahamas, Denmark, Norway, Germany, France,Italy, United Kingdom, Spain, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Finland, Ireland, Croatia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Europe, Africa, Asia, North America, South America, Middle East.etc