Your Leading Yuyao Yide Fluid Power Co, Ltd. Supplier
- Yuyao Yide Fluid Power Co., Ltd. is a professional manufacturer of hydraulic fittings. With more than 10 years of manufacturing and management experience in the hydraulic pipe fittings industry, we have become a major supplier of hydraulic adapters in manufacturing industry of China and a high-quality OEM manufacturer of international hydraulic components brands.
- The factory implements ISO9001 management system, advanced equipment manufacturing high quality hydraulic pipe fittings. Hydraulic pipe poducts are mainly exported to Europe, the United States, Japan and South Korea, while providing European brands with efficient OEM manufacturing of hydraulic pipe fittings. Our hydraulic pipe fittings include DIN2353/ISO8434-1 hydraulic fittings, hose fittings and hydraulic valves.
- Available in various thread sizes, ISO6149, Metric, BSP, NPT, NUF, SAE flanges, etc.
- Hydraulic components are available in materials of carbon steel, stainless steel, and brass.
- Provides zinc-nickel alloy and free chromium-6 coating.
- We are committed to providing high quality hydraulic fittings and service for field of engineering and fluid power.
Why Choose Us
Competitive price
We have a professional purchasing team and costing team,trying to reduce costs and profits,and provide you with a good price.
24h online service
You can contact us to inquire about pre-sales, sales, and after-sales services, and we will give you a very satisfactory.We are at your service online 24 hours a day.
Quality control
For each process,we have strict inspection standards,and we always insist that quality is life.
One-stop Solution
With rich experience and one-to-one service,we can help you choose products and answer technical questions.
Deutsches Institut für Normung
Bite-Type Fittings & Valves. DIN stands for “Deutsches Institut für Normung”, meaning “German institute for Standardization”. DIN 2353 tube fittings are most commonly used in industrial, oil & gas and construction equipment in hydraulic and pneumatic applications.

Benefits of DIN Fitting
Easy installation
DIN fittings are designed for easy and quick installation, which saves both time and money. They are highly interchangeable, requiring minimal tools or skilled labor.
Great durablity
DIN fittings are highly durable, making them ideal for use in harsh environments. They can withstand high temperatures, pressure, and corrosion.
Leak-free connection
DIN fittings are known for their leak-free connections. They provide a secure and tight seal, reducing the risk of leaks and other installation problems.
Minimum maintenance
DIN fittings require minimal maintenance, which makes them cost-effective. They can perform efficiently without any need for lubrication or frequent replacement.
Wide range of applications
DIN fittings are versatile and can be used for different applications, including in the chemical, food, pharmaceutical, and petrochemical industries, among others.
Better compatibility
DIN fittings provide better compatibility than other types of fittings. Their standardized dimensions ensure that they fit with other DIN components.
Better security
DIN fittings have locking mechanisms that ensure that there is no loosening of the fittings while in use. This ensures maximum safety during operation.
High flow capacity
DIN fittings offer high flow capacity, allowing fluid or gas to pass through with minimum resistance. This reduces energy consumption and improves efficiency.
Types of DIN Fitting




DIN 2353 24° cone
Both male and female of a metric DIN 2353 24° cone fitting have straight metric threads. The tube OD is mated with a 24° seat recessed counter bore of the male fitting. The female mating component can be:
A: A metric DIN 2353 female tube fitting
B: Metric tube with a cutting ring and nut
C: 24-degree cone with an O-Ring either welded or end formed on the metric tube.
The seat angle should be measured from the DIN hydraulic fitting centerline using a 12° gauge. The sealing of the two components is between the 24° seat in the male end and the corresponding female end.
DIN 2353 pressure series
It is important to note that DIN 2353 fittings are offered in 3 different pressure series – LL for Extra Light used in low-pressure applications, L for Light used medium pressure applications and S for Heavy used high-pressure applications. They are identified by measuring the thread size and pitch as well as tube OD.
Metric standpipe fittings
A Metric Standpipe fitting is made of three preassembled pieces
A: Bite Sleeve
B: Nut
C: Standpipe
Adjustable standpipe fittings facilitate the connection of a metric tube with a 24° conical bore. Tightening the nut onto a DIN 2353 male connection compresses the bite sleeve onto the tube of the standpipe, which makes the seal.
Banjo fittings
Metric and BSPP (British Standard Parallel Pipe) Banjo fittings have two components; a perforated hollow bolt and a spherical union for fluid transfer. They are primarily used in medium to high-pressure applications (up to 800 bar/11,600 psi).
The main benefit of a banjo fitting is they do not have to rotate relative to the fitting connection so the hose does not twist when screwing the fitting into place. It also allows the pipe exit direction to be adjusted relative to the fitting, allowing the bolt to be tightened independently.
Application of DIN Fitting
DIN fitting or DIN connector is a type of electrical connector mainly used in audio systems and other electronic devices. It is named after the German Institute for Standardization (Deutsches Institut für Normung), which has established the specifications for this type of connector. DIN connectors are widely used in the automotive industry, medical equipment, and industrial automation systems.
Some of the common applications of DIN fittings include:
DIN connectors are commonly used in audio devices such as speakers, amplifiers, and mixing consoles. They are preferred in these applications due to their ability to provide a secure and reliable connection that is not affected by vibration or movement.
DIN connectors are used in various medical equipment such as electrocardiogram machines, patient monitors, and ultrasound systems. They ensure that medical professionals and equipment are connected with secure and reliable connections.
DIN connectors are used in industrial automation systems, including robotics, machine control systems, and sensors. These systems require connectors that are reliable, can withstand harsh environments and can transfer data quickly and accurately.
DIN connectors are widely used in the automotive industry. They are used in the electrical systems of vehicles, including headlights, power windows, central locking, and power seats.
Craftsmanship:DIN Fitting
DIN fitting is a type of mechanical connection used mainly in the manufacturing industry. This fitting is used to connect pipes, hoses, and tubing together. It’s commonly found in hydraulic systems, chemical plants, and other industrial applications.
To ensure the highest quality of craftsmanship, DIN fittings are manufactured with precision and accuracy. The manufacturing process starts with the selection of high-quality materials such as stainless steel, brass, and aluminum. The materials are then cut, shaped, and machined to the exact specifications and requirements of the DIN fitting.
During the manufacturing process, strict quality control measures are followed to ensure that the DIN fittings meet the required standards. In addition, the fittings undergo rigorous testing to ensure their durability and reliability.
The manufacturing process of DIN fittings requires a high level of skill, knowledge, and experience. The craftsmen involved in this process must possess excellent attention to detail, a good understanding of engineering principles, and a keen eye for quality. They must also be familiar with the latest manufacturing technologies and techniques.
In addition to craftsmanship, DIN fittings are designed for ease of installation and maintenance. They are designed to provide a tight and leak-free seal, which ensures that the system operates efficiently and safely. The fittings are also designed to withstand high pressure and temperature conditions, making them suitable for use in harsh and demanding environments.
In conclusion, the craftsmanship involved in manufacturing DIN fittings is critical to their performance, quality, and durability. The attention to detail and adherence to strict quality control measures ensure that these fittings meet the highest standards and provide reliable and long-lasting service.

Inspect regularly: DIN fittings should be inspected periodically for damage or wear. Check for cracks, rust, and corrosion. Replace any faulty or worn parts.
Keep it clean: Clean the fittings regularly to avoid rust or buildup of dirt and debris. Use a soft cloth or a brush, depending on the fitting's material.
Lubricate: If your DIN fittings are made of metal, they need regular lubrication to prevent rust and corrosion. Apply a thin layer of lubricant to the threads of the fittings.
Tighten properly: DIN fittings should be tightened properly to avoid leaks. Be careful not to overtighten them, as it may cause damage.
Store properly: When not in use, store the DIN fittings in a clean, dry place. Avoid exposure to direct sunlight and extreme temperatures.
For compression single ferrule DIN fittings, attention has to be placed on the assembly process as it dictates the effectiveness and performance of the fittings. Fortunately, the fittings are designed with a robust tube grip which makes the installation and disassembly process quite easy. Also, the fittings can work under high pressures, weather changes, and withstand vibration fatigue.
With the right items in place already, follow the following steps for installation:
- Place the cutting ring and nut over the tube in the right position
- Insert the tube in the pre-assembly tool reaching the tube abutment before using the nut to hand tighten the tubes.
- Use a wrench to tighten 1 1/4 turns over the hand tightened position.
- Remove the pre-assembly and nut to see the formation of the ring over the tube. The ring formation happens as a result of the cutting ring penetration into the tube surface.
- Tighten the nut with a wrench whilst the fitting body is standing firmly. When a torque increase is observed, tighten the nut ¼ turn as the last step. However, note that the body shouldn’t be turned, only nuts.


Are Metric Hydraulic Fittings Interchangeable with Other Standards
Metric hydraulic fittings are generally not interchangeable with other standards, especially the imperial JIC or SAE fittings, due to the differences in thread diameter, pitch, and shape. However, some manufacturers produce fittings that interchange between different standards. That said, care must be taken to ensure compatibility with the specific plumbing, valves, pumps, and actuators selected.
This then begs the question — can I use different standards of hydraulic fittings in the same system? If the fittings fit (correctly), you can get away with different standards. However, using different standards of hydraulic fittings in the same system is generally not recommended, as this can lead to leaks, poor connection strength, and confusing maintenance. It is essential to use fittings that meet the same standard and are designed to work together to ensure optimal machine performance and the safety of the surrounding workers.
How Do DIN Fittings Work
DIN fittings are designed to be used in high pressure and high temperature environments in order to create a tight and secure seal between two pieces of equipment. The fittings consist of a male and female component that are designed to mate with one another.
The male component has a tapered end with a series of grooves or serrations that are designed to match those on the female component. When the two components are pressed together, the grooves interlock to create a secure connection between the two pieces of equipment.
To further ensure a tight seal, DIN fittings typically use an O-ring or gasket to create a barrier between the male and female components. This creates a complete seal that prevents leaks and contamination from entering the system.
DIN fittings come in a variety of sizes and materials to suit different applications. They are commonly used in the pharmaceutical, petrochemical, and food and beverage industries, as well as in high pressure hydraulic systems.


What Is The Difference Between ASTM and DIN Standards
ASTM (American Society for Testing and Materials) and DIN (Deutsche Industrie Norm) are two international standards organizations that provide specifications, guidelines, and testing methods for a range of industries and materials. The main differences between ASTM and DIN standards are:
Scope
ASTM covers a wide range of industries and materials such as metals, polymers, ceramics, electronics, and textiles, while DIN mainly focuses on engineering, construction, and the automotive industries.
Numbering system
ASTM uses alphanumeric codes to identify standards, while DIN uses numerical codes.
Applicability
ASTM standards are mainly used in North America, while DIN standards are mainly used in Europe and Asia.
Testing methods
ASTM standards tend to use more standardized testing methods, while DIN standards may be more prescriptive and specific to particular materials or industries.
Certification process
ASTM standards may be voluntary or mandatory depending on the industry, while most DIN standards are mandatory for product certification and regulatory compliance.
Certifications

Yuyao Yide Fluid Power Co., Ltd. is located in Yuyao City, Ningbo, China. It is a well managed fluid-connectors manufacturing enterprise.

FAQ
Yuyao Yide Fluid Power Co., Ltd. is well-known as one of the leading din fitting manufacturers and suppliers in China. Please rest assured to buy or wholesale customized din fitting made in China here from our factory. Contact us for more details.












