We do not recommend that disassembling and then reassembling the same threaded fittings. Becuase you have formed the threads to specific connection after you set an NPT fitting connection. Otherwise that may create leaks.

NPT pipe fittings are offered in various grades including stainless steel pipe fittings, brass fittings, copper fittings, carbon steel, nickel alloys, Cu/Ni, alloy steel.

What is NPT?

NPT is short of American National Standard Pipe Thread standards, which is used on threaded pipes and pipe fittings. They include both tapered and straight thread series for various purposes including rigidity, pressure-tight sealing, or both.

Connection of NPT Nipple Fitting

According to the shapes, we can divided into straight nipple (threaded nipple) and reducing nipple. Same as the steel pipe reducer, there are concentric swage nipple and eccentric swage nipple. All of them have some connecting methods as following:

TOE Nipple

TOE NIPPLE

Threaded one end nipple, and the other end is plain which can connect with the pipes or fittings by welding.

NPT TBE Nipple

TBE Nipple

It means pipe nipple have BSP or NPT threads on both ends, and connects pipe and fittings by screwed.

TSE Nipple Fitting

TSE NIPPLE

Threaded small end nipple offer called TSE Nipple for short. From full name, we can know the small dimaeter end is NPT Thread.

TLE Threaded Nipple

TLE NIPPLE

In contrast to TSE Nipple, the thread is on the large diameter end.

Threaded Nipple Fitting Weight Chart

The threaded nipple weight is based on the thickness, we can specify them as Schedule  80 or 160.

Threaded Nipple Weight

Specification for Steel Pipe Nipple

Standard: MSS SP-95 / BS3799

Threaded ends per ASME B1.20.1

Beveled ends per ASME B16.25

Material: Carbon Steels, Stainless Steels, Alloy Steels.

Sizes: 1/4″- 8″ in S40/STD, S80/XS, S160 & XXS. Also available in special pipe schedules.

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Copper fittings are made in accordance with B16.22 and B16.24. And most commonly used for air conditioning pipe works.

What are Different Types of Bronze Pipe Nipples Ends?

Bronze Pipe Nipples Ends

• PBE: Plain Both Ends

• PLE: Plain Large End

• PSE: Plain Small End

• POE: Plain One End

• TOE: Thread One End

• TBE: Thread Both Ends

• TLE: Thread large end

• TSE: Thread small end

• BBE: Bevel both ends

• BLE: Bevel large end

• BSE: Bevel small end

Material & Grades of Copper Pipe Fittings

ASTM / ASME SB 111 UNS NO. C 10100 / 10200 / 10300 / 10800 /12000 / 12200, C 70600 / 71500

ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)

How Many Types of Bronze Pipe Nipple?

Bronze Hexagonal Nipple

Hex nipples have a hexagonal section between the male and female threads for wrench tightening. There are types that straight hexagonal nipple and reducing hexagonal nipple.

Hexagonal Nipple Dimensions

NPT Hex Nipple Dimensions

Bronze Threaded Nipple 

Pipe Nipple is a fitting, consisting of a short piece of pipe, usually provided with a male pipe thread at each end, for connecting two other fittings.

Threaded Nipple Dimensions

NPT Threaded Nipple Dimensions

What is Tolerance of Hexagonal Nipples & Pipe Nipples?

If the length L of the bronze threaded nipple is more than 305mm (12″), the tolerance shall be ±3.2mm.

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1/2″ Threaded Pipe Nipples are manufactured by high quality carbon steels with a galvanized finish, also available in extensive range of dimensions.

Pipe Nipples are a short piece of pipe with external threaded end, it is commonly used in small diameter pipeline within 4 inch to connect pipes.

The threads at two ends can be same or different types, such as NPT thread to BSP thread nipples are also exist.

Threaded Pipe Nipples Dimensions

Standard: ASME B16.11, BS 3799

Diameter: 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″, 3″, 4″

Pressure Rating: STD/SCH40, XS/Sch 80.

End Type: TBE, TOE, Male, Female

Thread Type: NPT, BSPP, BSPT, PF, PT

Surface: Anti-rust Oil, Galvanized or PE Coated.

Material Grades of BSP Threaded Nipple

Stainless Steel: ASTM A182 F304/304L, F304H, F316/316L, F310, F317, F321

Alloy Steel: ASTM A182 F1, F5, F9, F11, F12, F22, F91

Duplex Steel: ASTM A182 F51, F53, F55, S 31803, S 32205, S 32550, S 32750, S 32760

Carbon Steel: ASTM A105, A694 F52, F60, F65, F70, A350 LF2, LF3

Pipe Nipple Weight Chart

TOE or TBE Pipe Nipple are usually with BSPP and NPT threads. The thickness is usually used in Schedule 80 and 160, and common length are 100mm, 150mm or customized.

Galvanized Pipe Fittings

Package

We marked all Pipe Nipple with Grade, Lot No, Size, Standard and Pressure. The workers surfaced all Galvanized Pipe Nipples with anti-rust oil, then sleeved forged steel threaded fittings into plastic bag individually, packed them in carton and wooden cases, finally bundled packages with nylon rope.

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. great care is taken during operation and transportation.

Galvanized Pipe Nipples

Inspection

1. Visual check the surface of carbon steel nipples. Such as dents, die marks, porosity, undercuts.
2. Check the marking. Such as size, material code, material grade, thickness, heat No.
3. Measure the dimensions. Such as outside diameter, thickness, length of thread.
4. Test the thread of thread nipple with go/no go gauge.
5. Test the galvanized thickness of forged fittings.

Advantages

• Good Quality
• Fast Delivery
• Safe Package
• Abundant Stock
• Reasonable Price
• Reliable Shipment

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Best price for Concentric Swage Nipple and manufacture them in the best quality materials and the most complete forms, dimensions can be customized.

Swage Nipple is a kind of pipe reducer products that used to connect pipes in different dimensions. It has various end forms and TBE (threaded both end) type is very prevalent among concentric swage nipples.

2 x 1 Swage Nipple Dimensions

2 x 1 Swage Nipple Dimensions

Standard: BS3799, MSS SP-95

Size: 1/4 to 12 inch / DN8-DN300

Thickness: Sch 10s, Sch 20, STD, Sch 40, XS, Sch 80

Form: Concentric Swage and Eccentric Swage Fittings

Concentric Swage Weight

Material Grades of Swage Nipple and Reducer

Stainless Steel: ASTM A182 F316/316L, F304/304L, F317, F321, F310

Duplex Steel: ASTM A182 F51, F53, F55, S 31803, S 32205, S 32550, S 32750, S32760

Carbon Steel: ASTM A106 B, A333 Grade 3, 6, 9. API 5L X52, X60, X65, X70

Alloy Steel: ASTM A182 F1, F5, F9, F11, F12, F22, F91

Pipe Nipple End Types

Pipe Nipple End Types

Swage Types: TOE, TBE, POE, PBE, BOE, BBE

Threaded Pipe Nipple Reducer

Package

We marked all Concentric Swage Nipples with Grade, Lot No, Size, Standard and Thickness Schedule. The workers surfaced all ASTM A182 F12 Swage Nipples with anti-rust oil, then sleeved them into plastic bag individually, put them in carton and wooden cases, finally bundled packages with nylon rope.

Package of Threaded Swage Nipple

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. great care is taken during operation and transportation.

Inspection

1. Visual the surface of reducer fittings body. Such as dents, die marks, porosity, undercuts.
2. Check the marking. Such as size, material code, material grade, thickness, heat no.
3. Measure dimensions. Such as outside diameter, wall thickness, length.
4. Test thread of threaded swage with Go-No Go Gauge.

Advantages

• Good Quality
• Fast Delivery
• Safe Package
• Abundant Stock
• Reasonable Price
• Reliable Shipment

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Forged Stainless Steel Hex Threaded Nipple is made of high quality SS 304 and SS 316, durable and affordable, exported by ISO certified global supplier. We stock multiple sizes for your selection and provide customized service.

Hex nipple, or hexagonal nipple is a male threaded fitting. It has a hexagonal section in the center for easy torquing, tightening or loose. It is ideal for use in pumping and industrial applications to connect two other fittings.

Hexagonal Nipple Dimensions

Standard: ASME B16.11, BS 3799

Diameter: 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″, 3″, 4″

Pressure Rating: Sch 80 and Sch 160

Thread Type: NPT Bushing. BSP Hex Nipple

Stainless Steel Nipples: ASTM A182 F304/304L/304H, F316/316L, F310, F317, F321, F309

Alloy Steel Nipples: ASTM A182 F1, F5, F9, F11, F12, F22, F91

Duplex Steel Nipples: ASTM A182 F51, F53, F55, F56, F57

Carbon Steel Nipples: ASTM A105, A694 F52, F60, F65, F70, A350 LF2, LF3

Stainless Steel Hex Nipple Weight Chart

Hex Nipple Type

Stainless Steel Hex Nipple (Straight and Full Size)

Hex Reducing Type

Long Hex Type

SS 304 Hex Nipple

Package of 304 Stainless Steel Hex Nipple

We marked all Hex Nipples with Grade, Lot No, Size, Standard and Pressure. The workers surfaced all Stainless Steel 304 Hex Nipple with anti-rust oil, then sleeved forged steel threaded nipple into plastic bag individually, packed them in carton and wooden cases, finally bundled packages with nylon rope.

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. great care is taken during operation and transportation.

Inspection of Hex Head Fittings

1. Visual check the surface of hex nipple body.
2. Check the marking.
3. Measure the dimensions and record.
4. Test the chemical properties
5. Test the thread with go/no go gauge.

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ASTM A106 / A106B Swage Nipple is a short piece of carbon steel pipe which commonly used to connect two pipes or tubes or other fittings.It plays a role of changing the way of connection. Swage nipples are similar to reducer but are used for connecting buttweld pipes to smaller screwed or socket weld pipes.

Forged threaded swage nipple are designed to use in oil refineries, chemical processing, petrochemical and other industries.

We have a team of experienced people who contribute too much to provide the premium quality pipe nipple at an affordable rate.

ASTM A106 B Standard

ASTM A106 Seamless Pressure Pipe covers seamless carbon steel pipe for high-temperature service. A106 B Pipes are suitable for welding, bending, flanging and similar forming operations.

Swage Reducer Fittings Dimensions

Standard: BS3799, MSS SP-95

Size: 1/4 to 12 inch / DN8-DN300

Thickness: Sch 10s, Sch 20, STD, Sch 40, XS, Sch 80, Sch 160

Form: Concentric Swage and Eccentric Swage Fittings

Threaded Nipple Lengths

Threaded Nipple Lengths

Pipe Nipple End Types

• Thread: NPT, BSPP, BSPT, Female, Male
• Plain
• Beveled
• Both ends can be the same type, or combine any two types above.

Swage Nipple A106 Types

Swage Nipple Material

Stainless Steel Concentric Swage

ASTM A182 F316/316L, F304/304L／304H, SS317, SS321, SS310, SS309, SS347

Duplex Steel Swage Nipple

ASTM A182 F51, F53, F55, S 31803, S 32205, S 32550, S 32750, S32760

Carbon Steel Eccentric Swage

ASTM A106 B, A350 LF2/LF3,A694 F52, F60, F65, F70

Alloy Steel Pipe Nipple

ASTM A182 F1, F5, F9, F11, F12, F22, F91

Package of Swage Nipple A106 / A106B

We marked all Carbon Steel Pipe Nipple with Grade, Heat No, Size, Standard and Schedule. Our workers sleeved Concentric / Eccentric Swage Nipple A106 into plastic bag individually, wrapped them with water-proof material, bundled package with nylon rope. We also stick shipping mark on the outside of package.

ASTM A106B is very common material grade for carbon steel pipe nipple.

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