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 6, 2013

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 Flow 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 Straightener → 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 → 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.