Angle and Channel Section Rolling Mill

Product Introduction

This semi-continuous angle and channel steel rolling mill is a professional sectional steel rolling equipment independently designed and optimized for medium and small steel plants. Adopting a mature 13-stand semi-continuous rolling layout (roughing mill group + finishing continuous rolling mill group), the equipment takes 150×150mm continuous casting square billets as raw materials, and completes full-automatic rolling, cooling, straightening, fixed-length cutting and stacking of angle steel and channel steel.

The whole production line realizes micro-tension continuous rolling, high-precision sizing and stable forming, solving the problems of low precision, poor surface quality and low efficiency of traditional section steel rolling equipment. It features simple process, low energy consumption, high yield rate and easy operation, which is ideal equipment for mass production of building profile steel.

Features

•Mature Semi-Continuous Rolling Process, Stable Output

Adopts classic 13-stand H-V alternating semi-continuous rolling layout, with 5-pass rough rolling + 8-stand continuous finishing rolling. The rolling process is stable and mature, effectively avoiding steel billet deviation and forming defects, ensuring long-term stable continuous production.

•High Precision Forming, Compliant with International Standards

Finished products fully comply with Chinese GB standards and Japanese JIS standards. The dimensional tolerance, straightness and surface quality of angle steel and channel steel meet international trade delivery requirements, with a finished product yield rate of over 96%.

•Full-Automatic Intelligent Control, Labor-Saving & Efficient

Equipped with independent DC drive system and micro-tension automatic rolling control. The whole line realizes automatic rolling, flying shear cutting, stepping cooling, straightening and fixed-length cold saw cutting, with minimal manual intervention and greatly reduced labor costs.

•Fast Roll Change Design, High Production Flexibility

Hydraulic rapid roll change system is configured for roughing mills. The roll system can be quickly replaced and positioned through hydraulic cylinder and traversing device, supporting flexible switching of different specifications of angle steel and channel steel, with short equipment downtime.

•Complete Supporting Process, One-Stop Production

Integrates heating, rolling, shearing, cooling, straightening, sizing cutting and automatic stacking processes. Equipped with professional flying shear, stepping cooling bed and straightening machine to realize finished product bundling and delivery directly, forming a complete closed-loop production line.

•Durable Structure & Low Operating Cost

All rolling mills adopt closed housing structure with cast steel rolls and high-load four-row cylindrical bearings, featuring strong rigidity, wear resistance and long service life. The centralized lubrication system reduces equipment failure rate and daily maintenance costs.

Product Parameters

Parameter Item	Technical Specification
Applicable Raw Material	150x150mm continuous casting square billet, billet weight ≤1050kg
Billet Length	3000~6000mm
Applicable Steel Grade	Carbon structural steel, low alloy structural steel
Finished Product Specifications	Equal angle steel: 40x4~100x12mm; Channel steel: 60x40~120x48mm
Finished Product Fixed Length	6m (customizable)
Single Bundle Weight	≈5t, Max bundle size: 400x400mm
Maximum Finishing Rolling Speed	10m/s
Production Standard	GB/T11263-2005, GB/T706-2008, JIS Standard

Rolling Mill Stand Configuration

1.Roughing Mill Group

Model	Roll Diameter	Roll Body Length	Max Rolling Force	Max Rolling Torque	Main Motor
Φ550 Closed Mill	520~610mm	800mm	3000KN	250KN·m	800KW DC Independent Drive
Φ400 Closed Mill	380~430mm	750mm	1500KN	150KN·m	800KW DC Independent Drive

2.Finishing Mill Group

Model	Roll Diameter	Roll Body Length	Max Rolling Force	Max Rolling Torque	Main Motor
Φ400 Closed Mill	380~430mm	750mm	1500KN	150KN·m	800KW DC Independent Drive
Φ350 Closed Mill	320~400mm	700mm	1200KN	90KN·m	800KW DC Independent Drive

3.Core Auxiliary Equipment Parameters

(1)Roughing Flying Shear:
•Max shearing section: 5100mm² (Φ80mm)
•Shearing temperature: ≥800℃
•Shearing speed: 0.3~1.5m/s
•Crop length: ≤100mm, Shearing error: ±50mm
•Main motor: 400KW DC motor
•Working mode: start-stop crank shearing

(2)Stepping Cooling Bed:
•Overall size: 10m x 72m
•Rack pitch: 110mm, Moving/static rack spacing: 500mm
•Main motor: 168KW DC
•Minimum action cycle: 2.5s
•Function: automatic cooling, straightening and conveying of section steel

(3)Cantilever Section Steel Straightener:
•Roll quantity: 5 lower driving rolls + 5 upper driven rolls
•Straightening speed: 7.5m/s
•Main motor: 200KW AC motor
•Applicable specifications: 4#~10# angle steel, 6#~12# channel steel

(4)Φ800 Fixed Cold Saw:
•Saw blade diameter: Φ800mm
•Saw blade linear speed: 80~100m/s
•Function: fixed-length cutting of finished section steel

Production Process Flow

Raw material feeding → Natural gas walking beam furnace heating (1250℃) → 550/400 roughing mill 5-pass rolling → Flying shear head/tail cutting → 8-stand finishing mill continuous micro-tension rolling → Finishing flying shear multi-length cutting → Cooling bed gradient cooling & primary straightening → Cantilever straightener precision straightening → Fixed cold saw sizing cutting → Automatic stacking & bundling → Finished product delivery.

Product Applications

1.Industry Application

Widely used in medium and small metallurgical steel plants, building steel processing factories, structural steel production enterprises. Specialized in mass production of carbon steel and low alloy steel angle steel and channel steel.

2.Downstream Usage Scenarios

The produced angle steel and channel steel are widely used in building construction, steel structure engineering, mechanical equipment manufacturing, bridge engineering, photovoltaic support, petrochemical support and other infrastructure fields, suitable for global engineering construction and steel trade export.

3.Applicable Project Scenarios

Ideal for overseas short-process steelmaking and rolling integration projects, especially for small and medium-sized steel factory upgrading and new construction projects in Iran, Southeast Asia, Africa and other regions, with low investment, high return and strong operational stability.