E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
Mar. 17, 2025
There are many types of stainless steel pipe fittings, which can usually be classified according to the connection method, structural shape and special purpose. The following are the main types and descriptions:
1. Classification by connection method
1. Welded pipe fittings
Butt-welded pipe fittings: Pipes are welded together and used in high-pressure or large-diameter systems (such as elbows and tees).
Socket-welded pipe fittings: Pipes are inserted into pipe fittings and then welded, suitable for small-diameter or low-pressure scenarios.
2. Threaded pipe fittings
Male thread: such as male elbows and male flexible joints.
Female thread: such as female tees and female plugs.
3. Compression pipe fittings
Use tools to tighten the sealing ring connection, which is easy to install and is commonly found in thin-walled stainless steel water pipe systems.
4. Flange pipe fittings
The flange is fixed by bolts, which is easy to disassemble and maintain, such as flange blind plates and flange elbows.
5. Quick-install pipe fittings (sanitary grade)
Use clamps or quick-install connectors, suitable for food and pharmaceutical industries, easy to clean.
2. Classification by structural shape
1. Elbow
Change the flow direction, common 45°, 90°, 180° specifications, divided into equal diameter and reduced diameter.
2. Tee
Divide or merge, divided into equal diameter tees and reduced diameter tees (such as T-type, Y-type).
3. Cross
Four-way diversion, used for complex piping systems.
4. Reducer
Connect different pipe diameters, divided into concentric reducers (axis alignment) and eccentric reducers (used to avoid cavitation).
5. Cap
Close the end of the pipe to prevent contamination or leakage.
6. Union
Removable connector for easy local maintenance.
7. Stub End
Used with flanges, the end is flanged to enhance the connection strength.
III. Special-purpose pipe fittings
1. Sanitary pipe fittings
Surface polished to Ra≤0.8μm, no dead angle design, in line with food-grade standards (such as DIN, 3A).
2. High-pressure pipe fittings
Thickened design, made of 316L or duplex steel, suitable for petrochemical and nuclear power high-voltage systems.
3. Insulating joints
Built-in insulating material to prevent electrochemical corrosion, commonly used in buried pipelines.
4. Expansion Joints
Compensate for thermal expansion and contraction, reduce pipeline stress.
IV. Other common types
Plug: Temporarily close the pipe mouth.
Pipe Saddle: Used for branch pipe connection.
Pressure measuring joint: Integrated pressure gauge interface for easy monitoring.
The selection of stainless steel pipe fittings needs to be combined with the working pressure, medium characteristics and industry standards (such as GB, ASTM, DIN) to ensure the safety and reliability of the system.
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How to choose stainless steel elbow fittings?
First, determine the material flowing through the pipe. If the pressure in a general water plant pipeline is low, a straight seam elbow is more cost-effective. Straight seam elbows are made by pushing straight seam steel pipe. For high-temperature applications, seamless elbows are essential for better pressure resistance. If the pipe is used in chemical or corrosive equipment, stainless steel or alloy materials should be selected.
Authentic is here to help you find the right pipe fittings and flanges for your specific needs.
FAQ
What certifications do your products have?
Our products comply with international standards such as ASTM, ANSI, JIS, DIN, and GB. We also hold various certifications to assure quality and reliability, including ISO 9001.
How can I get some samples?
If you need, we will offer you samples for free, but new customers are expected to pay express charge.
To which country have you supplied your products?
We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru, USA, Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.)
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Our team at Authentic is here to help you find the right pipe fittings and flanges for your specific needs.
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authentic013@steelpipes-fitting.com
+86 13668807131
Donghe Industrial Zone, Mengcun County, Cangzhou City, Hebei Province
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