Shandong Baohua Abrasion Resistant Steel Co., Ltd. is one of the most reliable manufacturers and suppliers of trailer industry parts in China, featured by quality products and low price. If you're going to wholesale bulk advanced trailer industry parts, welcome to get quotation from our factory. We also accept customized orders.
The core components of a trailer include the upper flange, web, lower flange, and the bottom and side panels of the trailer body. High-strength steel 700/750L series is the mainstream material used, with a clear trend towards wear-resistant trailer bodies for dump trucks (rear-tipping).
Advantages: High-strength steel BHG750 offers significant weight reduction, high strength, and good toughness; wear-resistant steel BHNM450 is used for the bottom and side panels, providing excellent wear resistance, no deformation, and long service life when handling sand and gravel.
Main Applications: Semi-trailers and semi-trailer dump trucks, covering various transportation scenarios including general cargo, equipment, containers, sand and gravel, and cement powder.

Product Parameters
|
Performance parameters |
Brinell hardness |
yield strength |
tensile strength |
elongation |
|
BHNM450 |
HBW430-470 |
≥1150 |
≥1350 |
≥10% |
|
BHG750 |
- |
≥680 |
≥750 |
≥16% |
Product Advantages
Compared to the 700 grade, our high-strength steel 750 has higher strength, allowing for thinner web plates and upper and lower flanges in the main beams, thus reducing vehicle weight. The NM450 grade offers over 60% higher strength than high-strength steel, significantly increasing the wear resistance and impact resistance of the body panels, making them extremely resistant to deformation. This greatly extends the service life of the body panels.
Supporting Services
Custom Processing Services
We offer laser cutting, bending, drilling, and beveling services according to customer drawings and size requirements; rust removal and pre-painting pretreatment are also supported.
Sea Freight Logistics Services
We provide professional wooden frame moisture-proof packaging, shipping whole boards and cut parts in bulk, suitable for port export sea freight, with full logistics tracking to ensure no bumps or deformation during transportation.
Flexible Payment Methods
We support various payment methods such as prepayment + final payment before shipment, and bank transfer, adapting to various procurement and settlement needs.
Processing Capacity and Quality Assurance
Company Qualifications: Possesses three system certifications (Quality Management System, Environmental Management System, and Occupational Health and Safety Management System); can provide quality assurance certificates and factory certificates of conformity (link attached to qualification certificates).
Processing Technology: Equipped with large-scale leveling machines, high-precision laser cutting machines, CNC bending machines, and other processing equipment, enabling one-stop processing and delivery from wear-resistant steel plates to finished mining car components.
Quality Inspection: Each batch of plates undergoes hardness testing, tensile testing of mechanical properties, low-temperature impact testing, and metallographic analysis. Products strictly adhere to the national standard GB/T 24186, while also implementing internal standards that exceed the national standard. This dual-standard, multi-layered quality control ensures comprehensive process management, preventing unqualified products from leaving the warehouse at the source, guaranteeing stable and traceable quality.For details, please see About Us - China Wear-resistant Steel Manufacturers Suppliers Factory
Frequently Asked Questions
Q: 1. For a 13-meter flatbed truck, the main beam is being upgraded to 4.5mm thick high-strength steel (750 grade). The original web plate was 5mm thick, and the upper and lower flanges were 8mm thick on top and 10mm thick on the bottom.What thickness would be best to replace them with?
A: We have clients with 5mm thick upper flanges and 10mm thick lower flanges, and their trucks have been in good condition for a long time. If you were using 8mm thick upper flanges and 10mm thick lower flanges, you could also upgrade to 6mm thick upper flanges and 8mm thick lower flanges.
Q: 2. For an 8.5-9.6m rear-tipping dump truck hauling sand and gravel (stones up to 50cm in diameter), the original 6mm-8mm thick high-strength steel (700 grade) floor plate has developed holes. What thickness of Baohua wear-resistant steel (450 grade) would be suitable?
A: Your truck's operating conditions are similar. We currently recommend 3mm, 4mm, and 5mm thicknesses. The truck has been in good condition after about six months of use, with no obvious potholes or damage to the floor plate. However, we also need to consider your loading method (loader, crane, etc.) and unloading height to determine if increasing the thickness is necessary.
Q: 3. How is the bending performance of the wear-resistant steel side panels of a U-shaped semi-trailer dump truck? Will it crack or experience other performance degradation?
A: Our wear-resistant steel has strict bending guidelines. The bending die's bending radius must be greater than 3 times the plate thickness, so this problem will not occur at all.
Q: 4. High-strength 750 material has higher strength than 700. Since higher strength materials are more brittle, is its crack resistance inferior to 700?
A: No, 750 material is an upgraded material specifically developed for trailer beams based on 700 material. Its elongation and impact resistance are superior to ordinary 700 material.
Q: 5. For ordinary 13-meter standard-sided semi-trailers, sometimes the working conditions require hauling sand and gravel. Considering the vehicle's registration specifications, what thickness of wear-resistant steel plate would you recommend?
A: We have established clients who have been using 3mm wear-resistant 450 steel plates, laid transversely, 3*1800*2430mm. The effect of hauling sand and gravel is excellent, the vehicle's counterweight is not high, and the wear resistance is excellent. We recommend using 3mm plates.

