Pipe Nipple manufacturer & supplier in China

Threaded nipple is a connector in the piping systems that can terminate or extend pipes. The nipples mainly include straight pipe nipple, hexagonal threaded nipple, and hexagonal head bushing three kinds.

  • Saving pipe connection costs.

  • Repairing pipes to prevent leaks.

  • Terminating or extending pipe runs.

  • Providing stable support and fixation for pipeline.

What is Nipple?

Nipple here only means threaded nipple. Threaded nipple is a pipe component with thread that is very common in the industries and life. Thread nipples can save much more cost of pipeline connection due to they make the connection, disassembly and replacement more simple and easy.

Thread nipples usually are manufactured through steel pipes or forging process and machining. Threaded nipples mainly include straight pipe nipple, hexagonal threaded nipple, and hexagonal head bushing. Straight pipe nipple is made of steel pipe, hexagonal nipple and hexagonal head bushing are forging process.

The materials of threaded nipple that are used for industry purpose commonly include carbon steel, stainless steel, alloy steel, copper and other metals. And for life purpose the materials refer to PC、PVC、PE、PPR and so on.

Applications

  • Natural gas pipeline

  • Oil pipeline

  • Chemical Pipeline

  • HVAC Piping

Technical Specifications

Pipe caps have many sizes, no matter for carbon steel or stainless steel. The following information is just about their sizes.

Classify the threaded nipple according to shapes

Straight pipe nipple

Straight pipe nipple is also called a barrel nipple. The thread can be male or female. Its mother material is steel pipe, it is very simple to get it through machining the pipes. It is heavily used for the plumbing industry.

Hexagonal threaded nipple

Hexagonal threaded nipple, its thread type is usually male. It is a short pipe typically with thread at the both ends. The size of the hexagonal nipple is dependent on the function for which it is being used for the pipeline.

Hexagonal head bushing

Hexagonal head bushing is similar to hexagonal threaded nipple, but a little different from it. For which, it is also a short pipe but only one end with threading, the other one end is hex head, which is used for the pipeline.

Classify the threaded nipple according to pressure

Straight pipe nipple

Straight pipe nipple has the sizes from 1/8” to 4”. And it has several types of wall thickness which also means pressures. Sch40, Sch80, XS, Sch160 and XXS are the most typical. Sch80, XS are equivalent to class 3000, and Sch160, XXS are equivalent to class 6000.

Hexagonal threaded nipple

Hexagonal threaded nipple belongs to high pressure forged pipe fitting for which it generally can be divided to class 3000, class 6000 and class 9000, but class 900 is not usual. And the both ends of the hexagonal threaded nipple can be the same or reduced.

Hexagonal head bushing

Hexagonal head bushing is in the range of threaded pipe fittings. It is generally applied to small sizes of pipe systems below 4 inch but with high pressure and temperature. The pressures include class 3000, class6000 and class 9000, but class 900 is not usual.

Features

Good corrosion resistance

The threaded nipple can be made of various materials, which can withstand the erosion of various acid, alkali and other corrosive media, and has a long service life.

High elasticity

The threaded nipple has good extensibility and fatigue resistance, which can withstand a certain force and displacement during the operation of the pipeline.

Easy to install and maintain

The design of the threaded nipple is simple and the use method is easy to understand, so the installation and maintenance is very convenient.

Simple Construction

The structure of the threaded nipple is simple and not easily affected by the external environment.

Customization Options

Customization is available. Metleader can provide flexible customized production service according to the drawings or technical data from clients to meet special requests.

Comparisons

  • Famous steel pipe factories TPCO, Bao Steel etc

  • Production test – 100% test

  • Non-conforming products – Reject

  • NDT – 100% inspect

  • Customized service – available

  • Final inspection – 100% inspect

Other supplier

  • Local small factories raw material

  • Sampling test

  • Non-conforming products: Repair

  • Sampling test

  • Not sure

  • Sampling test

Quality Assurance

1) Raw materials inspection: According to CQ system and reference standards, conducting chemical analysis and mechanical property testing. If qualified, the raw materials will be entered the warehousing management.

2) Production guarantee: All threaded nipples are manufactured according to the international standards. Our plant has production experience for over 40 years, and there is a professional technical team to take charge all production processes and ensure the quality of product delivery.

3) Heat treatment testing: Heating temperature and cooling time are the key points for heat treatment testing. As for threaded nipple, it is necessary to proceed with the heat treatment 100% in order to get better mechanical properties and reduce the stress.

4) 100% inspection before delivery: Testing items include thread type, size, hardness, diameter, wall thickness, length, etc, as well as DNT inspection and Mechanical testing, etc.

Send us a message if you have any questions or request a quote.

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