Good quality
Faster delivery
Less MOQ
OEM and ODM
U-Bolts
Our advantage
01/
Company strength
The factory covers an area of more than 20,000 square meters and has more than 300 employees. Our company has a registered capital of 10 million yuan and has passed the national quality management system certification.
02/
Professional Team
The company has a professional team that is constantly committed to technological innovation and management innovation, and continues to provide high-quality products and services to the yacht industry.
03/
Certificates
ISO9001. ISO 14001, ISO 45001
04/
Accept ODM/OEM service
Besides the standard products, Xinkun Marine also provide the OEM and ODM service to our customers. If customers want custom Anchors and custom boat seats, we can make the toolings and produce the products as per the customers' requirements.
What is U-Bolts
U-Bolts are probably the most common type of pipe support. A length of round threaded bar which is bent into a “U” shape with the primary purpose of fastening a pipe or tube to a surface. Though because of the very simple design, it can be used for a multitude of other purposes. Trying to determine the correct size u-bolt for your application can be a daunting task. Part of this is to do with old pipework engineering speak. U-bolts are traditionally used to clamp pipes into place. Pipes are tubes and engineers who design pipe systems are wholly concentrated on the inside of the tube-because from there they can determine how much fluid or gas can flow through the pipe.
Benefits of U-Bolts
Super strong U-bolt corrosion resistance
The thickness of Dacromet film layer is only 4-8μm, but its anti-rust effect is more than 7-10 times that of traditional electrogalvanizing, hot-dip galvanizing or paint coating method . Standard parts and pipe joints treated by Dacromet process did not show red rust after salt spray resistance test for more than 1200h.
U-bolts have no hydrogen embrittlement
Dacromet's treatment process determines that Dacromet has no hydrogen embrittlement, so Dacromet is very suitable for the coating of stressed parts.
High heat resistance
Dacromet can resist high temperature corrosion, and the heat resistance temperature can reach above 300℃. In the traditional galvanizing process, when the temperature reaches 100 °C, the peeling has been scrapped.
U-bolt has good bonding force and recoating performance
Dacromet coating has good bonding force with metal substrate, and has strong adhesion with other additional coatings. The treated parts are easy to spray and color, and organic coating The bonding force of the layers even exceeds that of the phosphating film.
Good permeability
Due to the electrostatic effect, the deep holes, slits, inner walls of the pipe fittings and other parts of the workpiece are difficult to be electroplated with zinc, so the above parts of the workpiece cannot be protected by electroplating. Dacromet can enter these parts of the workpiece to form a dacromet coating.
Application of U-Bolts
Architecture
U-bolts are widely used in construction to secure beams, pipes and cables to various structures. They provide stability and prevent movement, ensuring the structural integrity of buildings and bridges.
Car
In the automotive industry, U-bolts secure leaf springs to axles and suspensions. They provide support and help maintain proper alignment, ensuring a smooth and safe ride.
Ship
U-bolts are corrosion-resistant and ideal for marine applications. They are used to secure items such as boat trailers, deck accessories and rigging equipment to withstand the harsh conditions of saltwater environments.
Electrical and telecommunications
U-shaped bolts are commonly used to secure cables and wires to utility poles, ensuring safe and orderly power and telecommunications infrastructure.
Agriculture
U-bolts are used in agriculture to secure equipment and machinery such as plows, cultivators and trailers. They provide stability and prevent movement during operation.
Plumbing and hvac
U-bolts are used in plumbing and HVAC systems to fasten pipes, pipes and equipment. They ensure a secure connection preventing leaks and increasing system efficiency.
Industrial machinery
U-bolts are used in a variety of industrial machinery applications such as securing conveyor systems, mounting equipment and supports
load.
Types of U-Bolts
Round Bend U-bolts
Round bend U-bolts are the most common type of U-bolts used in the automobile industry. They are round in shape and have a threaded end on each leg. The threaded ends are attached to a nut and washer, securing the leaf springs and other suspension components to the axle. Round bend U-bolts are available in different sizes and materials, depending on the vehicle's make and model.
Square Bend U-bolts
Square bend U-bolts have squared-off corners, making them more robust compared to their round bend counterparts. Their construction allows them to provide additional support, making them ideal for heavy-duty vehicles such as trucks and buses. Square bend U-bolts are typically made of steel or iron, as they need to withstand heavy loads.
Semi-Round U-bolts
Semi-round U-bolts are a combination of round and square bend U-bolts. Their ends are round, while their sides have a flat surface, making them an excellent choice for applications where added strength and durability are required.
The Qualities of U-Bolts
Thickness
The type of cross arm a U-bolt will hold determines its thickness. Thick U-bolts are ideal for heavy materials as they can carry their weight. You will find U-bolts in different diameters to help you choose the most suitable for your use.
Tensile Strength
The material used in making U-bolt and the diameter of the element are very vital in determining its tensile strength. The manufacturing process will also influence the power; for example, hot forging produces stronger U-bolts, while cold-bending will give fragile devices that are not proper for use.
How to Choose U-Bolts
Size
Determine the diameter and length of the required bolts. This can be determined based on the materials and applications you need to connect. Ensure that the bolt size matches the material to be connected to ensure safe and reliable connection.
Material
Choose the appropriate bolt material according to your needs. The commonly available materials include stainless steel, carbon steel, etc. Different materials have different corrosion resistance, strength, and weight characteristics.
Quality standards
Ensure the selection of bolts that meet applicable quality standards. Common standards include ISO, DIN, ASTM, etc. Bolts that meet standards usually have reliable quality assurance and performance.
Application environment
Consider the special requirements of the application environment, such as high temperature, high humidity, chemical corrosion, etc. According to environmental requirements, select bolts with appropriate coatings or material treatments to improve their durability and corrosion resistance.
Load requirements
Understand the load requirements for the required connection and select bolts with sufficient strength and load-bearing capacity. You can refer to relevant standards or consult professionals to determine the appropriate bolt grade and strength grade.
A Comprehensive Guide to Properly Installing U Bolts
Accurate Measurement
It is critical to be precise: measure twice, cut once. Make sure the U-bolt size is appropriate by taking an accurate measurement of the object's diameter before securing it. Take into account the U-bolt interior width, the space between its legs, and the threaded ends' length.
Choosing the Right Material
Corrosion Resistance: Choose materials according to the surroundings. While steel is sturdy for everyday use, stainless steel has exceptional resistance to corrosion, making it perfect for outdoor or marine applications.
Ensuring Proper Thread Engagement
Thread Engagement Is Important: Make sure the threaded ends completely encircle the nuts. For a secure connection, try to get at least two threads past the nut.
Proper Torque Application
The Goldilocks Zone: Tighten the nuts in accordance with the manufacturer's instructions using a torque wrench. While under tightening could result in insufficient clamping power, overtightening could cause stress on the material.
Preventing Loosening
Lock It in Place: To stop loosening from vibrations or dynamic loads, think about utilising locking nuts or including a second locking mechanism.
Regular Inspection and Maintenance
Durability Via Vigilance: Regularly check U-bolts for wear, corrosion, or damage. Replace any problematic parts as soon as possible to keep the installation's integrity intact.
How To Measure U Bolts In A Few Easy Steps
Measure the round bend
The process of measuring a u bolt begins with measuring the round bend. Determining the length of the head from the round end to the square bend will give you some of the most critical information you need.Choosing a u bolt with the right-sized head will ensure that the bolt can hold the materials together. A proper measurement will also minimize the risk of injuries due to the tool your team uses to fasten the bolt slipping off.When the head of a u bolt is too large, the components that the bolt attaches will likely work themselves loose. Essentially, a bolt that is too large provides the two materials that it holds room to wiggle, compromising the structural integrity.
Consider the diameter
You will need to consider the diameter of the u bolt. This step is vital because it's common to confuse the diameter and the length of the u bolt.However, the diameter of the u bolt is the width of one of the “legs.” The legs refer to the threaded portion of the bolt that goes through both surfaces being connected.Traditional u bolt diameters range anywhere from 3/8″ to 1″.
Understand the length
The length of the u bolt is also often misunderstood. It's easy to assume that the length is the measurement from the curve to the end of the legs, but that's not the case.Instead, length in u bolt measurements refers to the distance between the legs, also referred to as the hook. If there is a special bend in the u bolt, you will need to consider the distance between the legs at the special bend of the bolt.Special bends are commonly used in custom-forged u bolts. Depending on the location of the bolt in your project, you may need a fastener that goes around bolts or other building materials. In these cases, knowing how to correctly measure u bolts is even more important.
Review the thread length
The thread length is one of the most important components of u bolt measurement. For instance, if you are trying to attach a piece of metal that is 2” thick to a concrete surface, you will want a u bolt with threads that are no less than 4” in diameter.Too little thread length will lead to the u bolt failing to adequately connect the surfaces.It's easy to assume that you should just purchase a u bolt with an incredibly long thread length, but that's not the case. When you have too much thread length on a u bolt, not only will it go out the other side of the surface that is being attached to, but it can actually weaken the structural integrity of the area that is being bolted together.
How to Maintain U-Bolts
Don't Reuse U-Bolts
U-bolts, however, when maintained and installed properly, is the key to a safe and comfortable ride. This is why you should never reuse old U-bolts on different vehicles. If there are already visible damages on the part, it's best to have it replaced with a brand new, functioning one.Some signs that there are issues with the U-bolt include corrosion, the presence of weld splatters, and loose components. When left unaddressed, these can further damage the entire suspension and can compromise vehicle safety.
Ensure Proper Alignment
A good part of what makes U-bolts last long for any heavy vehicle is the quality of their installation. When installed properly, the U-bolts can allow vehicles to absorb impacts and dampen any sudden jolts on the road when in motion.Make sure that the U-bolts are properly aligned when installing them alongside the leaf springs. Make sure that shackles and pins are all tightened down to avoid any loose attachments on the U-bolts threads.If needed, use a jack in order to compress the springs so that they will line up to the U-bolt bottom plate. Make adjustments and see to it that the springs are in the correct orientation with respect to the center pin. Before completing the installation, align the axle using a ratchet tie down the strap, and make inspections every now and again for uniformity.
Attach the U-Bolt at the Right Depth
As mentioned, the problem with older U-bolts is that they can cause damage to the suspension, especially if they're corroded. Another reason this isn't advised is that the previously-torqued U-bolts will have distorted threats from the deep nut. This part should only be tightened once and should never be loosened.When installing the U-bolts, have them attached at the right depth -not too loose for the springs to move too freely, but not too tight for the leaves to grind against the other.To get the right depth, make sure that the nuts do not extend past the ends of the bolt, as this can cause extra stress. Get the assistance of a mechanic that can help you determine whether the U-bolt has been clamped properly, thereby eliminating any flexing in the area between the leaf spring and the U-bolt.
Our Factory
Xinkun Marine's story started from 1999 in Kunshan, Suzhou City, Jiangsu Province, China. It specialized in the manufacturing of Anchors for boat builders and marine equipment distributors. With the company's development, it moved to Xinyi City, another city of Jiangsu Province, and started a larger factory in 2014, named Xinyi Xinkun Metal Products Co., Ltd. In early 2021, the company established a new factory producing pontoon furniture and boats seats for pontoon boat and other boat builders. In 2023, Xinkun Marine established another new factory mainly manufacture the aluminum boat hatches.
certificate
FAQ
We're professional u-bolts manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale high-grade u-bolts for sale here from our factory.
Antenna Mounts, Anchor Roller, Deck Fills