Project Name: 1.5-3.0×400mm 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: 1.5-3.0mm  

- Width: 232-400mm  

2. Raw Material Specifications  

Material: Q235, Q195, Q215, 08AL  

Thickness: 1.5-3.0mm  

Width: Max 400mm  

Coil Weight: Max 5000 Kg  

Inner Diameter: ∮508mm  

Outer Diameter: ∮800-1650mm  

3. Production Line Process Parameters  

Process Speed: 25~50m/min, TV value is 75  

Looper Filling Speed: 150% of the process speed  

Power Configuration of Transmission System: AC variable frequency speed regulation  

Zinc Coating Thickness Adjustment Range: 40~200g/㎡ (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 right to left (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 → Uncoiling Pinch Roll → Five-roll Leveler → Hydraulic Cross Cut Shear → Welding Platform → Tension Machine 1 → Entry Looper (two sets of single-roll CPC) → Tension Machine 2 → Double Roll Centering (CPC) → Dancing Roll → Annealing Furnace → Furnace Nose → Zinc Pot → Sink Roll → Air Knife → Cooling Fan → Cooling Tower Deflector Roll → Quenching Tank → Squeegee Roll → Double Roll Centering (CPC) → Tension Machine 3 → Tension Leveler → Dip Coating Passivation → Hot Air Drying → Exit Looper → Tension Machine 4 → Hydraulic Cross Cut Shear → Coiling Pinch Roll (Guide Plate) → Coiler (EPC) → Discharging Car  

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