Your Professional Fastener Manufacturer
Taiyuan Haizhuo Industrial Trade Co.,Ltd. (THIT) is located in Taiyuan City, Shanxi Province, China. Our Portfolio including three parts as follows: Piping Products covers the pipes of different materials used for transmission line, distribution line, household connection and service line. Building Materials covers materials of various usage for building works. Vehicles, Machineries and Instruments covers the tools used to mobilize, construct, install, commission and test the material and works in project.
Why Choose Us
01/
Rich Experience
THIT More Than 10 Years Experience in the sector of water and wastewater sector. We do not only provide goods required but also engineering, design and aftersales services.
02/
One Stop Supply
THIT is specializing in one stop supply with a full range of products used in the construction, expansion, maintenance and repair works for water supply, wastewater treatment, irrigation and fire fighting system.
03/
One Stop Supply
THIT is specializing in one stop supply with a full range of products used in the construction, expansion, maintenance and repair works for water supply, wastewater treatment, irrigation and fire fighting system.
04/
24H Online Service
Quick Response. We promise to deliver a feedback within 24 working hours after the request from customer.
-
Anchor
In the building works, Anchors are of much importance because they are an integral part of the Add to Inquiry -
Bolt
Bolt is usually crafted from steel, and is part of the fastener family. Bolt is an essential Add to Inquiry
Industrial Fastener Sizes
We are happy to carry industrial fasteners in a variety of sizes. For more unique or specialty application, we offer custom in-house capabilities in order to create custom threading.
Standard Fastener Diameters - #0 - 3″ (Larger diameters available)
Metric Fastener Diameters - M2 - M36 (Larger diameters available)
Custom Machining Options
Our fasteners can be finished with a variety of coatings such as plain, hot-dipped and galvanized for increased durability in high-stress applications. Additional finishes include our popular zinc-plated coating.
Applications of Fastener
Fasteners are a type of mechanical device used to join two or more objects together, typically to form a non-permanent connection. They come in a wide range of shapes, sizes, and materials to suit different applications. They are mainly used in applications such as bolts, nuts, clips, and rivets.
Construction Industry
Within the construction industry, fasteners are ubiquitous. They're essential for connecting pieces of wood, steel, concrete, and other materials in the creation of buildings, bridges, and infrastructure. From screws, bolts, and nails for general construction, to specialized fasteners for securing roofing or drywall, the industry would be lost without them.
Automotive Industry
In the automotive industry, fasteners are equally critical. Cars, trucks, and motorcycles are assembled with an array of fasteners, such as nuts, bolts, screws, and rivets. These secure everything from engines and transmissions to body panels and interiors, ensuring a safe and reliable ride.
Manufacturing Industry
The manufacturing industry leverages fasteners in a myriad of applications. These components are used to assemble machinery, furniture, appliances, and much more. They also play a significant role in maintaining equipment, ensuring machinery can be safely and easily disassembled and reassembled for repairs and maintenance.
Aerospace Industry
Fasteners also have their place in the aerospace industry. The production of aircraft and spacecraft hinges on the use of high-strength, lightweight fasteners such as aerospace bolts and rivets. These ensure the structural integrity of craft exposed to extreme conditions and stresses during flight.
Electronics Industry
Lastly, the electronics industry relies on a unique subset of fasteners. Tiny screws, standoffs, and other specialty fasteners are used to secure delicate electronic components, ensuring they remain safely in place and function correctly within devices such as computers, smartphones, and televisions.
Manufacturing methods of Fastener
Generally speaking, there are three main ways to produce a fastener: cold forging, hot forging, or machining. Based on the type of fasteners to produce and the metal they are made from, one method may be more preferable to the others. Standard fasteners are commonly manufactured through cold forging (without heating up the material).
Cold forging
This method enables the high-speed manufacture of net shape parts or near net shape parts with favorable mechanical properties and a high-quality surface finish. Another benefit to cold forming over hot forging or machining is work hardening. During cold plastic deformations, the material's crystal structure undergoes profound changes, becoming stronger and more resistant. The result is a finished part with better physical and mechanical properties. The process does present some limitations, in that parts with bigger diameter need more pressing force to be shaped. Therefore, other methods may be preferable.
The performance of cold forming machines depends, among other things, on the size of the fasteners to be manufactured. Some can reach a speed of 300 parts per minute or even more. The smallest screws and bolts, used for electronic components and clockworks, have a diameter of less than 0.5 mm, while the largest cold formed screws have a diameter of around 30 mm.
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Repellendus aperiam, quam praesentium dolorum tempore unde architecto eum iure eos eveniet numquam eius assumenda eaque ea ducimus expedita explicabo cumque magni.
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Repellendus aperiam, quam praesentium dolorum tempore unde architecto eum iure eos eveniet numquam eius assumenda eaque ea ducimus expedita explicabo cumque magni.
Hot forging
Hot forging is the common method for producing bolts with large diameters starting with a thread size of approximately M36 or more, and a length of approximately 300 mm and more. The bar stock is heated up to high temperatures to make the material more malleable and then fed into a forging press. The temperatures are determined by the bar material, geometry, and tolerances. With this process, it is possible to manufacture even complex shapes and high degrees of forming. Hot forging is also the process of choice for manufacturing fasteners made from nickel-based alloys and titanium alloys. A distinctive feature of hot-formed fasteners is their raw surface structure. Hot forging has its own disadvantages, as it is very time-consuming.
Unlike machining (which we will tackle in a second), cold and hot forming are chipless processes.
Machining
Machining is a manufacturing technique in which a metal is cut into a desired final shape and size by a controlled material-removal process. This method is really only suitable for non-standard fasteners and small quantities, as it generates a great deal of metal swarf, and it is also time-consuming.
Fastener standards
The American Society of Mechanical Engineers (ASME) currently has 66 active published standards under the B18 designator for fasteners. The quality-focused standards "establish in-process and final inspection requirements for fastener products" and provide a "receiving inspection plan for fastener purchasers."
ASME standards include:
B18.1.1: Small Rivets
B18.1.2: Large Rivets
B18.2.3.1M: Metric Hex Cap Screws
B18.3 Socket Cap, Shoulder, Set Screws, and Hex Keys
B18.6.1 Wood Screws
B18.6.2 Slotted Head Cap Screws, Square Head Set Screws, And Slotted Headless Set Screws
B18.6.3 Machine Screws, Tapping Screws, and Metallic Drive Screws
B18.6.9: Wing nuts
B18.18 Quality Assurance For Fasteners
Heat and Surface Treatment of Fastener
In many cases, fasteners undergo heat treatments, which affect their microstructure and thus their physical properties, such as strength and ductility. The process steps depend on the metallurgical characteristics. Steel fasteners, for example, are heated to a specific temperature according to the carbon content, and they are kept at this temperature for a specific time. Subsequently, the parts are quenched in water or oil to increase their strength and hardness. The parts are then reheated - to a lower temperature - to achieve greater ductility with fewer distortions in the microstructure. A heat treatment line for steel fasteners, for example, features washing, degreasing, hardening, quenching, washing, annealing and dyeing stations. Usually, these lines are mesh belt furnaces, where fasteners travel at a certain speed through the various stages.
Sometimes, surface treatments may be required as well. For instance, special coatings may be applied to improve fasteners' properties. Case-hardening is used for tapping screws and self-drilling screws, for example. The screws are heated and kept for a certain time in a carbon-rich atmosphere. The carbon seeps into the surface, increasing the local carbon content. Then, the screws are quenched and thus hardened. As a result, the surface of such screws is rather hard while their interior remains ductile.
Special coatings may be applied to improve corrosion resistance. Such a coating is achieved, for example, by galvanization.
After the processing is done, fasteners undergo a final cleaning step and are then ready for packaging and shipping.
Fastener Ordering Information
While we are dedicated to providing fasteners on time for any order, there are some instances in which shipping can exceed same-day shipping.
RFQ Lead Time - One business day.
Order Lead Time - Same day or next business day (ability to process emergency orders faster if requested).
Non-Stock Orders - 3-5 days.
Special Orders - Vary depending.
Our Certifications
FAQ
We're well-known as one of the leading fastener manufacturers and suppliers in China. Please feel free to buy high quality fastener for sale here from our factory. For price consultation, contact us.
Anchor