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What is Stainless Steel Pipe Nipple
Stainless steel pipe nipple is a type of fitting commonly used in pipe connections, which are typically welded or threaded to connect pipes. Stainless steel pipe nipple come in a variety of types, with simple structures and small sizes that can be easily installed in various pipes and equipment. They also have good sealing performance, effectively preventing fluid leakage. Stainless steel pipe nipples can meet the needs of different pipe designs, with common types including threaded nipples, swage nipples and hex nipples.
ASTM A733 stainless steel threaded pipe nipple is a short piece length of pipe or tube that includes one thread end with plain or bevel end, or both thread ends. The material can be carbon steel black or stainless steel bright. The length of the threaded nipple is usually determined by the total length of the thread. ASME B16.11 Hex Nipple and MSS SP 95 Swage Nipple are another two types of threaded nipples.
Threaded Nipple：TOE and TBE Nipple
TBE Nipple
TOE Nipple
Stainless steel threaded pipe nipple come in a variety of sizes and shapes and can provide an effective seal for pipes transporting liquids, gas and steam. They twist onto pipe using various male and female thread connections including NPT or BSP.
There are two shape : threaded one end (TOE) and threaded both end ( TBE).
Specifically, TOE means threaded at one end when translated. Thus, we can say that a nipple TOE is a nipple that has one threaded end.
In this case, we have the acronym TBE for "threaded both ends"which means threaded at both ends. In other words, this is the most typical type of nipple as described above for connecting two parts or fittings with female threading.
How Many Types of Steel Pipe Nipple
PE X PE
PE X BE
PE X THD
BE X BE
BE X THD
THD X THD
Specification of Nipple Threaded Both Ends
| Size | 1/4”to 12” / DN8 to DN300 |
| Thickness | STD, SCH 40, SCH 80, SCH 160, XXS |
| Length | L= 2", 3", 4" or Customized |
NPT Thread Pipe Nipple
The American National Pipe Thread Tapered, is the best known and most widely used connection where the pipe thread provides both the mechanical joint and the hydraulic seal. NPT has a tapered male and female thread which seals with Teflon tape or jointing compound. Dimensions of American Taper Pipe Thread, with Sealant Compound.
Material Grade for Stainless Steel Forged Fittings:
The common material grade contains A182 F304/304L/304H - F316/316L - F317 - F310S - F321 - F347 - F904L.
ASTM A733 Threaded Pipe Nipple Dimensions
| Nominal Size | OD of Pipes | Lengths of Thread | Wall of pipes | Pipe Nipple Lengths | |||
| DN | NPS | OD | L 2 min | T | L | ||
| Ⅰ | Ⅱ | Ⅲ | |||||
| 6 | 1/8 | 10.3 | 6.7 | STD,XS Sch40,Sch80 | 50 | 75 | 100 |
| 8 | 1/4 | 13.7 | 10.2 | ||||
| 10 | 3/8 | 17.1 | 10.4 | ||||
| 15 | 1/2 | 21.3 | 13.6 | STD,XS Sch40,Sch80 | 50 | 75 | 100 |
| 50 | 3/4 | 26.7 | 13.9 | ||||
| 25 | 1 | 33.4 | 17.3 | ||||
| 32 | 11/4 | 42.2 | 18.0 | STD,XS Sch40,Sch80 | 75 | 100 | 150 |
| 40 | 11/2 | 48.3 | 18.4 | ||||
| 50 | 2 | 60.3 | 19.2 | ||||
| 65 | 21/2 | 73.0 | 28.9 | STD,XS Sch40,Sch80 | 100 | 150 | 200 |
| 80 | 3 | 88.9 | 30.5 | ||||
| 90 | 31/2 | 101.6 | 31.8 | ||||
| 100 | 4 | 114.3 | 33.0 | STD,XS Sch40,Sch80 | 100 | 150 | 200 |
| 125 | 5 | 141.3 | 35.7 | ||||
| 150 | 6 | 168.3 | 38.4 | ||||
| 200 | 8 | 219.1 | 43.5 | STD,XS Sch40,Sch80 | 150 | 200 | 250 |
| 250 | 10 | 273 | 48.9 | ||||
| 300 | 12 | 323.8 | 54 | ||||
Swage Nipple：Concentric and Eccentric Swage
Concentric Swage Nipple
Eccentric Swage Nipple
It is used to change the diameter of the pipe and connect two pipes of different sizes. Same function as butt weld pipe reducer.Stainelss steel swage pipe nipple is a widely used type of stainless steel pipe nipple.It corresponds to the production standard American Standard MSS SP-95 and the petrochemical standard SH/T3419.
| Shape | Concentric and Eccentric Swage |
| Size Range | 1/4", 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 3 1/2", 4", 5", 6", 8", 10", 12" |
| Thickness Schedule | Sch 10 / 20 / 30 / STD / 40 / 60 / XS / 80 / 100 / 120 / 140 / 160 / XXS |
| Standard | MSS SP-95, SH/T3419 |
How Many End Types of MSS SP 95 Swage Nipples
Bevel of Both Ends (BBE)
Plain of Both Ends (PBE)
Thread of Both Ends (TBE)
Bevel of Large End / Plain of Small End (BLE/PSE)
Bevel of Large End / Thread of Small End (BLE/TSE)
Plain of Large End / Thread of Small End (PLE/TSE)
Plain of Large End / Bevel of Small End (PLE/BSE)
Thread of Large End / Bevel of Small End (TLE/BSE)
Bevel of Large End / Thread of Small End (BLE/TSE)
Application
Stainless steel pipe nipples are usually used in low-pressure piping systems, and the type of nipple used involve the size, temperature, and working pressure of the system.
What is Stainless Steel Pipe Nipple
Stainless steel pipe nipple is a type of fitting commonly used in pipe connections, which are typically welded or threaded to connect pipes. Stainless steel pipe nipple come in a variety of types, with simple structures and small sizes that can be easily installed in various pipes and equipment. They also have good sealing performance, effectively preventing fluid leakage. Stainless steel pipe nipples can meet the needs of different pipe designs, with common types including threaded nipples, swage nipples and hex nipples.
ASTM A733 stainless steel threaded pipe nipple is a short piece length of pipe or tube that includes one thread end with plain or bevel end, or both thread ends. The material can be carbon steel black or stainless steel bright. The length of the threaded nipple is usually determined by the total length of the thread. ASME B16.11 Hex Nipple and MSS SP 95 Swage Nipple are another two types of threaded nipples.
Threaded Nipple：TOE and TBE Nipple
TBE Nipple
TOE Nipple
Stainless steel threaded pipe nipple come in a variety of sizes and shapes and can provide an effective seal for pipes transporting liquids, gas and steam. They twist onto pipe using various male and female thread connections including NPT or BSP.
There are two shape : threaded one end (TOE) and threaded both end ( TBE).
Specifically, TOE means threaded at one end when translated. Thus, we can say that a nipple TOE is a nipple that has one threaded end.
In this case, we have the acronym TBE for "threaded both ends"which means threaded at both ends. In other words, this is the most typical type of nipple as described above for connecting two parts or fittings with female threading.
How Many Types of Steel Pipe Nipple
PE X PE
PE X BE
PE X THD
BE X BE
BE X THD
THD X THD
Specification of Nipple Threaded Both Ends
| Size | 1/4”to 12” / DN8 to DN300 |
| Thickness | STD, SCH 40, SCH 80, SCH 160, XXS |
| Length | L= 2", 3", 4" or Customized |
NPT Thread Pipe Nipple
The American National Pipe Thread Tapered, is the best known and most widely used connection where the pipe thread provides both the mechanical joint and the hydraulic seal. NPT has a tapered male and female thread which seals with Teflon tape or jointing compound. Dimensions of American Taper Pipe Thread, with Sealant Compound.
Material Grade for Stainless Steel Forged Fittings:
The common material grade contains A182 F304/304L/304H - F316/316L - F317 - F310S - F321 - F347 - F904L.
ASTM A733 Threaded Pipe Nipple Dimensions
| Nominal Size | OD of Pipes | Lengths of Thread | Wall of pipes | Pipe Nipple Lengths | |||
| DN | NPS | OD | L 2 min | T | L | ||
| Ⅰ | Ⅱ | Ⅲ | |||||
| 6 | 1/8 | 10.3 | 6.7 | STD,XS Sch40,Sch80 | 50 | 75 | 100 |
| 8 | 1/4 | 13.7 | 10.2 | ||||
| 10 | 3/8 | 17.1 | 10.4 | ||||
| 15 | 1/2 | 21.3 | 13.6 | STD,XS Sch40,Sch80 | 50 | 75 | 100 |
| 50 | 3/4 | 26.7 | 13.9 | ||||
| 25 | 1 | 33.4 | 17.3 | ||||
| 32 | 11/4 | 42.2 | 18.0 | STD,XS Sch40,Sch80 | 75 | 100 | 150 |
| 40 | 11/2 | 48.3 | 18.4 | ||||
| 50 | 2 | 60.3 | 19.2 | ||||
| 65 | 21/2 | 73.0 | 28.9 | STD,XS Sch40,Sch80 | 100 | 150 | 200 |
| 80 | 3 | 88.9 | 30.5 | ||||
| 90 | 31/2 | 101.6 | 31.8 | ||||
| 100 | 4 | 114.3 | 33.0 | STD,XS Sch40,Sch80 | 100 | 150 | 200 |
| 125 | 5 | 141.3 | 35.7 | ||||
| 150 | 6 | 168.3 | 38.4 | ||||
| 200 | 8 | 219.1 | 43.5 | STD,XS Sch40,Sch80 | 150 | 200 | 250 |
| 250 | 10 | 273 | 48.9 | ||||
| 300 | 12 | 323.8 | 54 | ||||
Swage Nipple：Concentric and Eccentric Swage
Concentric Swage Nipple
Eccentric Swage Nipple
It is used to change the diameter of the pipe and connect two pipes of different sizes. Same function as butt weld pipe reducer.Stainelss steel swage pipe nipple is a widely used type of stainless steel pipe nipple.It corresponds to the production standard American Standard MSS SP-95 and the petrochemical standard SH/T3419.
| Shape | Concentric and Eccentric Swage |
| Size Range | 1/4", 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 3 1/2", 4", 5", 6", 8", 10", 12" |
| Thickness Schedule | Sch 10 / 20 / 30 / STD / 40 / 60 / XS / 80 / 100 / 120 / 140 / 160 / XXS |
| Standard | MSS SP-95, SH/T3419 |
How Many End Types of MSS SP 95 Swage Nipples
Bevel of Both Ends (BBE)
Plain of Both Ends (PBE)
Thread of Both Ends (TBE)
Bevel of Large End / Plain of Small End (BLE/PSE)
Bevel of Large End / Thread of Small End (BLE/TSE)
Plain of Large End / Thread of Small End (PLE/TSE)
Plain of Large End / Bevel of Small End (PLE/BSE)
Thread of Large End / Bevel of Small End (TLE/BSE)
Bevel of Large End / Thread of Small End (BLE/TSE)
Application
Stainless steel pipe nipples are usually used in low-pressure piping systems, and the type of nipple used involve the size, temperature, and working pressure of the system.
