High reputation Trailer Lug Studs - High quality ISUZU NKR Rear Hub Bolt – JINQIANG

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Fast and good quotations, informed advisers to help you choose the correct product that suits all your needs, a short production time, responsible quality control and different services for paying and shipping affairs for Spring Bracket, Spare Wheel Mounting Bracket, Metal Spring Pin, As an expert specialized in this field, we are committed to solving any problem of high temperature protection for users.
High reputation Trailer Lug Studs - High quality ISUZU NKR Rear Hub Bolt – JINQIANG Detail:

Manufacturing process of bolts

1.Spheroidizing annealing of high-strength bolts

When the hexagon socket head bolts are produced by the cold heading process, the original structure of the steel will directly affect the forming ability during cold heading processing. Therefore, the steel must have good plasticity. When the chemical composition of the steel is constant, the metallographic structure is the key factor determining the plasticity. It is generally believed that the coarse flaky pearlite is not conducive to cold heading forming, while the fine spherical pearlite can significantly improve the plastic deformation ability of the steel.
For medium carbon steel and medium carbon alloy steel with a large amount of high-strength fasteners, spheroidizing annealing is performed before cold heading, so as to obtain uniform and fine spheroidized pearlite to better meet the actual production needs.

2.high-strength bolt drawing

The purpose of the drawing process is to modify the size of the raw materials, and the second is to obtain the basic mechanical properties of the fastener through deformation and strengthening. If the distribution of the reduction ratio of each pass is not appropriate, it will also cause torsional cracks in the wire rod wire during the drawing process. In addition, if the lubrication is not good during the drawing process, it can also cause regular transverse cracks in the cold drawn wire rod. The tangent direction of the wire rod and the wire drawing die at the same time when the wire rod is rolled out of the pellet wire die mouth is not concentric, which will cause the wear of the unilateral hole pattern of the wire drawing die to aggravate, and the inner hole will be out of round, resulting in uneven drawing deformation in the circumferential direction of the wire, making the wire The roundness is out of tolerance, and the cross-sectional stress of the steel wire is not uniform during the cold heading process, which affects the cold heading pass rate.

Advantages of wheel hub bolts

1. Strict production: use raw materials that meet national standards, and strictly produce in line with industry demand standards
2. Excellent performance: many years of experience in the industry, the surface of the product is smooth, without burrs, and the force is uniform
3. The thread is clear: the product thread is clear, the screw teeth are neat, and the use is not easy to slip

Our Hub bolt quality standard

10.9 hub bolt

hardness 36-38HRC
tensile strength  ≥ 1140MPa
Ultimate Tensile Load  ≥ 346000N
Chemical Composition  C:0.37-0.44  Si:0.17-0.37  Mn:0.50-0.80   Cr:0.80-1.10

12.9 hub bolt

hardness 39-42HRC
tensile strength  ≥ 1320MPa
Ultimate Tensile Load  ≥406000N
Chemical Composition C:0.32-0.40 Si:0.17-0.37 Mn:0.40-0.70   Cr:0.15-0.25

FAQ

Q1. Is your factory able to design our own package and help us in market planning?
Our factory has more than 20 years experience to deal with package box with customers’ own logo.
We have a design team and a marketing plan design Team to service our customers for this

Q2. Can you help to ship the goods?
YES. We can help to ship the goods through customer forwarder or our forwarder.

Q3. What are our major market?
Our main markets are Middle East, Africa, South America, Southeast Asia ,  Russia, ect.

Q4. What types of customized parts do you provide?
We can customized truck suspension parts such as Hub Bolts, Center Bolts, Truck Bearings, Casting, Brackets, Spring Pins and other similar products.


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Our products and solutions are greatly recognized and trustworthy by customers and may fulfill constantly changing financial and social requires for High reputation Trailer Lug Studs - High quality ISUZU NKR Rear Hub Bolt – JINQIANG , The product will supply to all over the world, such as: Bulgaria, San Francisco, Seychelles, The company attaches great importance to product quality and service quality, based on the business philosophy good with people, genuine to whole world, your satisfaction is our pursuit. we design products, According to customer's sample and requirements, to meet the needs of the market and offer different customers with personalized service. Our company warmly welcomes friends at home and abroad to visit, to discuss cooperation and seek common development!
  • The company has rich resources, advanced machinery, experienced workers and excellent services, hope you keep improving and perfecting your products and service, wish you better!
    5 Stars By Victor from United States - 2018.12.14 15:26
    The customer service staff is very patient and has a positive and progressive attitude to our interest, so that we can have a comprehensive understanding of the product and finally we reached an agreement, thanks!
    5 Stars By Cornelia from Czech Republic - 2017.02.28 14:19
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