Views: 0 Author: Carl Xu Publish Time: 2025-08-30 Origin: Site
Hangzhou shengpeng offer sizes from 3/8 to 5/8 inches. You can choose different coatings and customization options.
In our daily lives, pin locks for trailer hitch pins are important. They keep equipment safe during trailer towing and rescue.
Hangzhou Shengpeng offers four sizes: 3/8 inch, 1/2 inch, 3/4 inch, and 5/8 inch. Both galvanized and black electrophoretic coatings are available for selection. To enhance the product's corrosion resistance and provide solutions for customers.
We offer a full-size towing coupler from Hangzhou Sheng Peng. It measures 3/8 to 5/8 of an inch. We have four regular sizes available. These sizes meet the needs of different devices.
1. 3/8 of an inch (9.525 mm) is the best choice for small cars. It is mainly suitable for small trailers, bicycles, and other small machines.
Manufacturers make this product from 304 stainless steel or mild steel. It is lightweight and strong against rust. It is easy to install, and one person can do it.
2.1/2 inch (12.7 mm) : universal applicable to domestic models, such as SUV, small and medium-sized construction machinery. Made of low-carbon steel with strong tensile strength. The surface can be selected as galvanized or electrophoretic, and it has a high cost performance
3. The 3/4 inch (19.05 mm) is used in machinery for medium-duty trailers and vans. They make it from a strong alloy material. This material can resist salt spray for over 72 hours. It can handle overloads and outdoor conditions for a long time, providing better safety.
4. 5/8 of an inch (15.875 mm) is a popular size on the market. Manufacturers make it from low carbon steel or stainless steel. You can also choose different coatings. It has an optional card buckle lock mode, which is extremely convenient.
High-precision CNC processes all the above-mentioned size products, achieving a diameter tolerance of ± 0.02mm. The product surface is smooth. When you insert it into the connecting parts, it fits tightly. This helps prevent loosening from vibration.
The fixed pin's rust resistance varies. We provide a range of professional plating solutions.
1. Galvanized: This is a cost-effective choice. It uses a uniform zinc coating on the surface. It passes a salt spray test for 24 hours. Lower in cost and suitable for bulk purchases.
Electrophoresis paint coating looks great and protects against rust. The electrophoresis process creates a smooth, uniform film on the surface. You can choose colors like black, silver, or white.
This coating is both decorative and rust-resistant. It passes a salt spray test for 72 hours. It is suitable for home use and display equipment.
Hangzhou Shengpeng has a modern factory that covers 5000㎡. This factory is key to ensuring product quality in size and coating.
The factory has different areas for inspecting raw materials, CNC machining, assembling finished products, and conducting inspections. This setup ensures quality control from raw materials to finished products.
1. Strict selection of raw materials
We cooperate with well-known steel mills. Before workers inspect the raw materials, they must enter the factory.
This ensures that materials like 304/316 stainless steel, 45# steel, and alloy steel meet the standards. They also need to have the required tensile strength. This process helps avoid defects in raw materials from the start.
2. Standardized coating process: Ensuring consistency
The workshop uses fully automated production lines. For processes like hot-dip galvanizing and electrophoresis, workers maintain strict control over factors like temperature, time, and thickness. Researchers conduct salt spray tests on samples from each batch of coated products.
3. Comprehensive process inspection
Finished products must undergo three inspections: first article inspection, in-process inspection, and final inspection before leaving the factory. Each batch of shipped products has an inspection report, ensuring traceability of quality.
In addition to the above four standardized products in different sizes, Hangzhou Shengpeng also offers customization services.
Size customization: Supports non-standard sizes such as 2/5 inches and 1 inch. You can adjust the length according to your usage scenarios. Customization of holes, threads, and special structures is also available.
Coating customization: You can customize special colors such as red and blue.
Customers can customize their appearance by adding their logo through laser engraving.
Answer: Choose "towing weight" and "trailer hitch diameter." This classification includes light, medium, and heavy-duty machinery. If you are unsure, please provide the brand and model of the trailer, and we will recommend the appropriate size for you.
Answer: The seaside is a highly corrosive environment. We recommend two options: 316 stainless steel material with Teflon coating or 45# steel with Dacromet coating. Both solutions have passed salt spray tests for more than 120 hours. They resist seawater corrosion and last longer.
Answer: The minimum order quantity for non-standard sizes is 50 pieces. If the customer wants to try 10 pieces, we can agree on a small sample fee. They will refund this fee when they place a bulk order. Please provide the text you want to be translated.
If you find that the size of the product does not match after you receive it, how should you handle it? Please provide the text you want to be translated.
If the size is wrong because of our mistake, we will send you a new item for free. We will also pay for the return shipping. We will analyze the cause and ensure that such issues will not occur again in the future.
As a manufacturer in Hangzhou, we focus on three main advantages. These are full size coverage, many coating options, and strong customization. We provide rust-resistant and durable pin locks, trailer hooks, and fixed pins that work well worldwide.
Whether it's standard-sized products or customized solutions, we can respond quickly and deliver accurately. If you have any purchasing needs, please feel free to contact us.
