Sanwei:Your Professional Pin Manufacturer!

 

Hebei Sanwei Fasteners Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sale of fasteners, located in Hebei Province, China. Since its establishment,wei has been committed to providing customers with high-quality, high-performance fastener solutions, which are widely used in various fields such as construction, machinery manufacturing, automobile, and power communication.

 

 
  • Spring Pin
    Standard: DIN1481. Name: Spring Pins. Material: Carbon steel, alloy steel, etc.. Grade: Grade 4.8, 5.8, 8.8
  • Cylindrical Pin
    Standard: DIN7. Name: Cylindrical pin. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8
  • Joints
    Name: Joints. Material: Carbon steel and alloy steel, etc.. Grade: 4.8 grade, 5.8 grade, 8.8 grade. Surface Treatment: ZP,YZ,BLACK
  • Pin And Plate
    Name: pin and piece. Material: carbon steel and alloy steel, etc.. Grade: 4.8 grade, 5.8 grade, 8.8 grade. Surface treatment: ZP,YZ,BLACK
 

Why Choose Us

 

 

OEM/ODM Service
Our customised fasteners are made to your special requirements. It can be fully threaded or partially threaded, and the thread, driving method, material, length, head shape, plating and all these can be specially designed according to your needs.

 

Good CNC machining technology
From material selection to finished products, Handan Sanwei provides you with comprehensive solutions when it comes to customised fasteners. The fasteners we make are high precision and strong. No matter what kind of precision you need, we can meet it and guarantee your satisfaction.

 

Strong engineering design team
Our company has an excellent and professional engineering team, and a number of technicians are elites in the industry. The staff always strives to explore new methods and technologies. From the selection of metals and special alloy materials to the finished fasteners, we can solve all aspects of the whole project engineering.

 

Professional Testing Laboratory
Quality assurance and testing is an important part of producing fasteners. Handan Sanwei has a specialised quality testing laboratory with spectrometers, hardness testers, tensile testers, salt spray test chambers and other equipment, where raw materials and final products are strictly tested. In addition, the company also has experienced testing experts who use professional methods to comprehensively test the fasteners and finally give you a detailed test report.

 

Digital Quality Control System
We rely on our self-developed full-process digital quality inspection system to strictly control every step from raw materials entering the factory to finished products being shipped. This system will always monitor the quality of the products to ensure that each batch of products meets the industry standards and complies with customer requirements. In addition, it collects and feeds back data in real time, giving you a clear understanding of product quality.

 

Advantages of Pin

Durability
Depending on the material, pins are reliable for holding two components together securely. Most pins are made from steel, brass, or aluminum which makes them dogged in strength, corrosion resistance, and reliability.

 

Universality
Pins are usable in various industries and their application can differ as the purpose changes. They can be used in the construction, manufacturing, automotive, or aerospace industries. What’s more, pins can combine with other fasteners like washers, bolts, and nuts to give better stability and support.

Easy to Install

It is easy to install and remove a pin fastener as long as you know its working mechanism. They do not need any specific tools or unique mechanisms and are removable by hand. This feature makes the pins ideal for several applications with no power source.

Cost-Efficiency

Pin fasteners are cheaper ways of securing components of equipment together. They do not cost much to make and can be easily produced in large quantities. Therefore, pins are the perfect fastener tools for high-volume equipment industries.

Safe and Adjustable

Pins can be used to hold components of equipment that need to be adjusted from time to time. They are also usable equipment and devices that are subject to vibration. Moreover, pins do not need heat or electricity for installation which reduces the risk of hazards like electrocution and injuries.

 

 

Specification

 

 

Standard

DIN

Name

Pin

Material

Carbon steel, alloy steel, etc.

Grade

Grade 4.8, 5.8, 8.8

Nominal Diameter

M2-M48

Finish

ZP,YZ,BLACK

 

Application of Pin
 

Automotive Industry
In the automotive industry, pins are widely used to connect and fasten components such as engines, suspension systems, brake systems, and interior trims. High-strength, wear-resistant pins help improve the vehicle's overall performance and safety.

 

Aerospace Industry
In the aerospace industry, pin play a critical role in aircraft structure assembly, engine components, and landing gear systems. Pins need to meet stringent quality and precision requirements to ensure the reliability and safety of aircraft.

 

Medical Equipment
In the medical equipment field, pins are commonly used in the connection and fixation of surgical instruments, implants, and medical devices. High-precision, biocompatible pin materials (such as titanium) ensure the reliability and safety of medical devices.

Spring Pin

 

Cylindrical Pin

Electronics and Electrical Industry
In the electronics and electrical industry, pins are widely used in the connection and fastening of circuit boards, connectors, and electronic components. Pins with good conductivity and corrosion resistance improve the stability and reliability of electronic devices.

 

Construction Industry
In the construction industry, pins are commonly used in the connection and assembly of structural elements, pipelines, and mechanical equipment. High-strength, corrosion-resistant pins help ensure the safety and durability of building structures.

 

Consumer Products
In the consumer products field, pins are used in the connection and fixation of household appliances, furniture, and sports equipment. Simple, easy-to-install pin improve product assembly efficiency and user experience.

 

Types of Pin
 

Dowel Pins:
Dowel pins are cylindrical rods typically made of metal or wood, used to align and join two pieces of material. They fit into corresponding holes, creating a precise and secure connection. These pins are often used in woodworking, cabinetry, and other applications where precision alignment is necessary.

 

Cotter Pins:
Cotter pins, also known as split pins, are used to secure the position of nuts, bolts, and other fasteners. They are inserted through a hole in a bolt or shaft and bent at the ends to prevent the pin from sliding out. Cotter pins are commonly found in mechanical assemblies and automotive applications.

 

Taper Pins:
Taper pins have a slight conical shape, which allows them to lock two components together securely. The taper ensures a tight fit, making these pins ideal for applications requiring a permanent or semi-permanent assembly. Taper pins are frequently used in machinery and tools where high precision and durability are necessary.

 

Concrete Pins:
Concrete pins are specifically designed for use in masonry and concrete applications. These robust fasteners can be driven directly into concrete or masonry without pre-drilling, making them ideal for quick and efficient installation.

 

Lynch Pins:
Lynch pins are fasteners fitted on items or assemblies that may be often disconnected later on. It is in this group of industrial pins and is relevant in the frequent interchanging of components industries. In agriculture, they join implements to tractors, construction, and automotive parts. They’re crucial for safety and efficiency in these applications.

 

Spring Pins:
Coiled pins, roll pins as well as spring pins are cylindrical fasteners with a slit along their length to enable them to reduce in diameter when engaged in a hole. The more popular types of thermoplastic are used in several industries because of their uniqueness in certain properties. In the transportation industries such as automotive, aerospace, and manufacturing industries, we find the spring pins in alignment, pivoting joints, and holding of components.

 

L-Handle Pin:
L-handle pins are known as T-handle pins or pull pins. These are quick-release fasteners. It has an L-shaped handle. They are useful in cases where constant and easy adjustments without tools, or constructions that need fast assembly and disassembly. These pins are widely used in fitness equipment, industrial machinery, and agricultural implements.

 

 

Manufacturing method of pin

 
 
Machining

Machining is a versatile method for producing pins, especially for small to medium quantities or custom designs.
Machining Processes:
Turning: Used for creating cylindrical pins on a lathe.
Milling: For producing non-cylindrical features or grooves.
Grinding: Used for achieving high precision and surface finish.
Threading: For creating threaded pins or set screws.

 
Cold Forming

Cold forming is an efficient method for high-volume production of pins.
Cold Forming Techniques:
Heading: Shaping one end of a wire or rod to form the pin head.
Extrusion: Forcing material through a die to create the desired shape.
Swaging: Reducing the diameter of a portion of the pin.
Rolling: Creating threads or grooves on the pin surface.

 
Casting

Casting is used for producing pins with complex shapes or when using materials that are difficult to machine.
Casting Methods:
Die casting: Injecting molten metal into a mould cavity.
Investment casting: Using a wax pattern to create a detailed mould.
Sand casting: Suitable for larger pins or low-volume production.

 
Powder Metallurgy

Powder metallurgy is useful for producing pins with specific material properties or complex shapes.
Powder Metallurgy Steps:
Mixing metal powders with additives.
Compressing the mixture in a die.
Sintering the compressed part at high temperatures.
Optional secondary operations like machining or heat treatment.

 
Wire Forming

Wire forming is commonly used for producing cotter pins and other bent wire pin designs.
Wire Forming Process:
Cutting wire to the desired length.
Bending the wire to the required shape using specialised tooling.
Heat treating or tempering if necessary.

 

 

 

Packaging and Shipping

 

 

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FAQ

 

 

Q: I need a customized fastener, but it's not on your website. What do I do?

A: Please send us your request with detailed drawings or photos, then we will make the quotation for you accordingly.

Q: In general, how long can delivery be made after receiving an order?

A: Regular orders can be completed and shipped within 15-20 working days after receiving the deposit and confirming product details.

Q: During the product usage process, if we encounter technical problems, can you provide technical support?

A: Sure. We have a professional technical team that can provide you with technical consultation and guidance through methods such as telephone, email, or video conference.

Q: What is the packaging method of the product?

A: 50KG bag and pallet.

Q: What is the primary function of pins in mechanical assemblies?

A: Locating pins are precision-engineered components that accurately position and align parts in a workholder. They play a critical role in ensuring that components fit together perfectly, which is essential for maintaining the integrity and functionality of the final product.

Q: What is the difference between a dowel pin and a cotter pin?

A: Cotter pins can also serve as safety locking devices through slotted or castle hex nuts, or through clevis pins. Dowel pins have ground cylindrical sides with both ends chamfered. Dowel pins are used where precise locating of mating parts is necessary, but with relatively minor wear or shock factors.

Q: What is the difference between a lynch pin and a cotter pin?

A: Lynch pins and cotter pins are both types of fasteners used to secure parts, but they differ in their locking mechanisms and applications. Lynch pins feature a self-locking ring that snaps into place, while cotter pins are typically bent into place.

Q: What is the best material for dowel pins?

A: Nylon is a lightweight, nonconductive material that is resistant to impact, wear and abrasion. It is ideal for electrical applications or where corrosion is a concern. Wooden dowel pins are ideal for furniture building and cabinetry for structural reinforcement.

We're professional pin manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized pin made in China here from our factory. Contact us for quotation.

Spring Pin, Pin And Plate, Joints
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