Pipe Fittings
Your Professional Pipe Fittings Manufacturer!
Zhejiang AODEHUA Technology Co., Ltd. is located in the beautiful and rich East China Sea - Yuhuan City. Founded in 2002, Aodehua Group specialized in the production of brass water plumbing valves for more than 20 years. Set development, forging, manufacturing, testing, and sales as one, superb technology, and stable and reliable quality make "AOHUA" products win the favor of consumers.
Various Types
Our products cover the entire heating and plumbing system, such as ball valves, gas valves, gate valves, manifolds, TRV, air vent valves, water radiators, magnetic filters, etc.
Fast Delivery
Our company's monthly production capacity reaches 1 million sets, and we can achieve fast and on-time delivery.

Quality Assurance
The entire production process is controlled by the ISO9001 product quality management system. The pass rate of the products is 100%.
24H Online Service
Our customer service representatives are available 24/7 to assist you with any inquiries, technical issues, or after-sales services.
What are pipe fittings?
Pipe fittings are used to join plumbing components to allow for many types of configurations. They are used to either extend or change the direction of flow in a plumbing system. Pipe fittings are available in many different sizes and materials, allowing compatibility with many different types and sizes of pipe. Within a plumbing system, a pipe fitting can change the direction of the flow of liquid, extend the length of a pipe run, or change the flow rate of liquids or gases. The material, size, and type of fitting a system requires is determined by the pipe size, pipe material, the liquids used in the system, and the pressures within and outside of the system.
Advantages of Pipe Fittings
Seamless Flow
Pipe fittings play a vital role in ensuring that liquids, gases, and other substances flow without interruption or leakage. A well-chosen and properly installed set of fittings can make a significant difference in the efficiency and safety of a system.
Adaptability
In the industrial and commercial world, flexibility is key. Pipe fittings allow for easy adaptation and modification of pipelines to meet changing needs. They enable businesses to reconfigure their systems without costly and time-consuming overhauls.
Leak Prevention
Properly installed pipe fittings are crucial for preventing leaks. In applications where hazardous or valuable substances are transported, leaks can be disastrous. Fittings, when chosen and installed correctly, create a tight and secure seal that minimizes the risk of leakage.
Durability
The right materials for pipe fittings can enhance the durability and longevity of a system. Fittings are available in various materials, including stainless steel, brass, and PVC, each offering unique properties suitable for different applications.
Safety
Safety is paramount in industrial and commercial settings. Well-designed and maintained pipe fittings ensure that the system operates safely. Fittings can incorporate safety features such as pressure relief valves to protect against overpressure situations.
Efficiency
Properly selected and installed pipe fittings can optimize the flow of substances, reducing turbulence and energy loss. This, in turn, improves the efficiency of the entire system, saving energy and operational costs.

Pipe fittings play an important role in many industrial and home processes. They are not just used for water as people might think, but they can also be used for oil, gas, air, steam, and sewage. Pipe fittings are also used to connect furnaces and boilers to the same pipe or another type of pipe.
Pipe fittings are easier to install and less likely to leak than regular pipes, making them more cost-effective. They also have more flexibility and can be used in multiple places.
Types of Pipe Fittings
Elbows
Elbow pipe fittings are relied on to alter the flow direction between two pipes. These fittings are essential as pipes are built with straight lines, so elbows allow for all the various straight pipes to connect. Typically, this fitting comes in 90, 45, and, occasionally, 22.5-degree angles and is screwed or glued into place. These plumbing fittings are available in a number of materials and are often female threads.
Couplings
Ideal for preventing leakage in pipes, couplings are pipe coverings used for pipes that have the same diameter or that have been damaged or split. When it comes to coupling, there are two types of pipe fittings typically used in plumbing - compression coupling and slip coupling. Compression, or regular coupling, prevents leakage between two pipes with a gasket or rubber seals on both sides. On the other hand, a slip coupling - which is often easier to install - connects one pipe to another. Slip-couplings are great for fixing a long, damaged pipe.
Union Pipe Fitting
Similar to a coupling fitting, unions are used to connect pipes - typically those that are made with different materials. This fitting appears as a small nut. However, unlike a coupling, unions can be easily removed whenever needed. This fitting has both male thread and female-ended thread, making it a multi-use fitting that works with a number of pipes.
Adaptors
To help make a pipe threaded as either male or female, adaptor fittings are used. For male adapters, there are male threads, while female adapters have female threads. This is for when pipes have plain or don't have special ends, adapting them to the needs of the surrounding system. Typically used for copper and standard PVC pipes (polyvinyl chloride), one side of the adaptor is plain, and then it is properly welded or glued to the plain end of a pipe.
Valves
To stop the flow of liquids or gas, valves are the go-to fitting for a plumbing system. There are three main types of valves:
Separation: ideal for immediately disconnecting to replace or reconstruct a piping network.
Throttling: control the volume in a pipe of a liquid's pressure.
Non-return: allow liquid or gas to pass in only one direction.
Whether you're looking to stop or simply regulate the flow of fluid, there are many different valves to choose from. From gate valves to the globe, check valve, butterfly valve, and throttling diaphragm valve, each one serves a special purpose for a better-running system.
Bushings
To fit larger and smaller pipes with a link, Bushings fittings are relied on to connect sizes together. Typically taking up less room than a union or coupling, Bushings are sometimes inside-out threaded, although they are used for the same purpose as their union/coupling counterparts. Bushings also feature a male and female side and can handle high pressures.
Flanges
Flanges are pipe fittings that work to connect together pipes, valves, flanges engines, and other sections for a full, well-running network. These fittings typically feature collars, ribs, rims, or edges that are flush to surfaces and are joined using clamps, bolts, threading, welding, or brazing.
Tees and Crosses
When a pipe fitting has more than one opening, it's either a tee or across. With tees, there are three openings, with one inlet and two outlets This is ideal to merge the flow of two inlets with one outlet. On the other hand, crosses have four openings in four different directions. This fitting can cause more stress to a pipe as they sit at the center of four connections, causing temperature changes. These are best for sprinkler systems.
Caps and Plugs
To simply differentiate between the two, a cap doesn't have threading while a plug does. A cap is best for stopping low-pressure water, while when pressure is high, a plug is utilized for a tighter, secure screw. Often, plugs are so secure that they require special equipment to remove, while caps need to be soldered or glued into place.
Common Metal Pipe Fittings
Brass
Brass has optimal conductivity and high-temperature ductility, and additionally is a strong, durable metal that's corrosion-resistant. This is best for threaded and smaller compression fittings.
Aluminum
The preferred fitting for plumbing with aluminum piping, aluminum is corrosion-resistant and lightweight. This is ideal for high-corrosion resistance needs.
Stainless Steel
With corrosion resistance due to its 10.5% chromium makeup, stainless steel is strong and great for sanitary applications or uses with aggressive materials.
Copper Pipe Fittings
With improved conductibility and corrosion resistance, copper is often used for residential water supply lines. This is best used with copper piping and can come in both soft and rigid forms. Copper pipe fittings are also known for their ability to resist very high temperatures.
Cast Iron Fittings
Best for sanitary, storm drain, waste, and vent piping for building construction, both male iron pipe fittings and female iron pipe fittings are abrasion-resistant and very strong. Iron pipe fittings can resist materials like gravel and debris, making them a great choice for more abrasive applications.
Steel
Great for high-heat situations, this durable and strong material is ideal for both commercial and industrial uses. It can carry water, as well as flammable gases.
How to choose the right pipe fittings
When choosing a pipe fitting for your application, you must focus on three details of your pipes: their materials, sizes, and fitting standards.
Material
The material of your pipe fitting must be compatible with the material of your pipes. As a general rule, the same material should be used for both the pipe fitting and the pipe it is connected to. This ensures that both components are well suited for the application they are used for. In cases where pipes of different materials must be connected, transition fittings are used. These fittings contain one material on one end and a different material on the other. This allows for pipes of different materials to integrate seamlessly as long as the materials are compatible with the application they are used for.
Sizes
The size of fittings is an obviously important factor in selecting the correct fittings for your system. Without precise sizing, there will be no seal, and the system will not function properly. If you need to connect two pipes or fittings of different sizes or standards, there is an adapter fitting that will suit your needs.
Fitting standards
Pipe fitting standards are determined by a governing body to determine how pipes and fittings join together. Some of the most common pipe standards include NPT, NPTF, BSPT, BSPP, SAE, UN, and UNF. Because these standards are determined by governing bodies, they differ based on location. For example, NPT (National Pipe Thread) is the most popular US standard for tapered thread fittings. BSP (British Standard Pipe), on the other hand, is the popular standard in Great Britain, Australia, and the commonwealth countries.
The standard of fitting you need is determined by the standard of your pipes. When connecting pipes of two different standards, use an adapter fitting that is suited to your pipes’ respective sizes and standards.
As one of the leading pipe fittings manufacturers and suppliers in China, we warmly welcome you to wholesale bulk discount pipe fittings from our factory. All customized products are with high quality and competitive price. For quotation and free sample, contact us now.
Straight Manual Radiator Valve, Internal and External Ball Valve, Brass Manifold






