Project Name: 0.5-1.2×400mm Continuous Galvanizing Production Line  

Client Name: Tangshan Rongwei Pipe Industry Co., Ltd.  

Project Nature: New Construction Project  

Undertaking Method: General Contracting by Jingjie Ruisi  

Signing Date: January 11, 2012  

Commissioning Status: Under Construction  

Operation Status: Good  

I. Basic Parameters:  

### 1. Product Specifications  

Steel Grade: Ordinary Carbon Structural Steel  

Material: Q235, Q195, Q215, 08AL  

Steel Coil: Inner Diameter ∮508mm, Outer Diameter ∮800-1650mm  

Coil Weight: Max 5000 Kg  

Strip Dimensions:  

- Thickness: 0.5-1.2mm  

- Width: 232-400mm  

2. Raw Material Specifications  

Material: Q235, Q195, Q215, 08AL  

Thickness: 0.5-1.2mm  

Width: Max 400mm  

Coil Weight: Max 5000 Kg  

Inner Diameter: ∮508mm  

Outer Diameter: ∮800-1650mm  

3. Production Line Process Parameters  

Process Speed: 63~120m/min, TV value is 75  

Looper Filling Speed: 130% of the process speed  

Power Configuration of Transmission System: AC variable frequency speed regulation  

Zinc Coating Thickness Adjustment Range: 30~180g/㎡ (double-sided) adjusted by air knife  

Zinc Coating Status: Regular spangle, small spangle, spangle-free  

Passivation Method: Dip coating passivation  

Product Quality Standard: GB/T2518-2008  

Production Line Direction: From left to right (viewed from the operation side)  

II. Description of Process and Equipment Functions  

The main equipment is arranged according to the process flow as follows:  

1#, 2# Feeding Car → 1#, 2# Uncoiler → 1#, 2# Uncoiling Knife → 1#, 2# Uncoiling Pinch Roll → Hydraulic Cross Cut Shear → Seam Welder → Tension Machine 1 → Entry Looper (three sets of single-roll CPC) → Tension Machine 2 → Double Roll Centering (CPC) → Tension Measuring Roll → Annealing Furnace → Guide Roll → Zinc Pot → Sink Roll → Stabilizing Roll → Air Knife → Cooling Fan → Cooling Tower Deflector Roll → Quenching Tank → Squeegee Roll → Double Roll Centering (CPC) → Tension Machine 3 → Tension Leveler → Tension Machine 4 → Dip Coating Passivation → Hot Air Drying → Exit Looper → Tension Machine 5 → Hydraulic Cross Cut Shear → Pre-coiling Pinch Machine (Guide Plate) → Coiler (EPC) → Discharging Car  

Continuous operation is realized through the electronic control system, hydraulic system, pneumatic system and auxiliary equipment.