700 High Strength Steel Hat Type Trailer Middle Post

1. Product Overview

Our trailer middle post is a hat-shaped cold-formed section roll-formed from 700-grade high-strength steel strip. It serves as the core load-bearing component for the side panels of grain semi-trailers and stake semi-trailers. Adopting one-piece roll forming without welded joints, it features excellent resistance to bulging and bending. It is a lightweight structural part supplied for overseas trailer manufacturers. It can be provided in raw black finish or with anti-rust primer coating.

2. Application Scenarios

• Grain semi-trailers / stake semi-trailers: side middle posts to resist side pressure from cargo bulging
• Reinforcement for heavy-duty flatbed trailers and tipper truck bodies
• Trailer lightweight upgrade projects
• Supporting for original trailer manufacturing and vehicle modification factories
• Heavy-duty transport trailers for mining goods, agricultural products and building materials

3. Core Advantages

1. 700 high strength material for lightweight design: Compared with Q355 steel, thinner plates can be used while maintaining the same strength to reduce trailer tare weight and increase effective payload.
2. Integrated hat-shaped profile: It has better bending and torsion resistance than ordinary C-channel steel, and is not easy to deform under heavy lateral load.
3. High dimensional accuracy: Continuous roll forming ensures good straightness and clean cutting ends. It fits perfectly during welding and assembly, saving labor hours.
4. One-piece forming without welds: The stress is evenly distributed, and cracks are not easy to occur under heavy load conditions. Anti-rust coating is optional to adapt to complex road conditions.
5. Direct factory supply with strong mass production capacity: Stable mass supply is available to support long-term supporting cooperation with overseas trailer manufacturers.

4. Structure and Configuration Description

• Profile: Hat-type cold-formed section with inner curled edges to improve moment of inertia and enhance the resistance to lateral extrusion
• Material: 700-grade high strength steel
• Common thickness: 2.0–4.0 mm
• Length: Custom cut according to the height of the trailer body
• Optional processing: End cutting, chamfering and pre-drilled holes for convenient welding and assembly with trailer side rails

  

  

5. Customization Options

1. Profile customization: Custom hat-shaped dimensions (web height, flange width) according to customer drawings
2. Length customization: Custom cutting of any fixed length, multiple lengths available in one batch
3. Processing service: End notching, hole drilling, chamfering and local reinforcement treatment

6. Packaging and Shipping Instructions

• Packaging: Products stacked neatly and fastened with steel straps to prevent collision and deformation during sea transportation; wooden pallets can be added for bulk orders.
• Transportation: Breakbulk shipment.
• Quality Inspection: Batch sampling inspection of appearance and dimensions before delivery to strictly control bending deviation, burrs and other defects to guarantee export quality.
• Lead time: 3–7 days for standard specifications; 7–15 days for custom profiles.

7. Inquiry Guide

Welcome to inquire about our 700 high strength steel trailer middle posts. Please provide: profile drawing / dimensions, steel thickness, single piece length, whether holes or chamfering are needed, order quantity and trailer model. We will calculate weight and quotation promptly. Samples, section drawings and technical data sheets are available. Long-term supporting cooperation for trailer manufacturers is welcome.