It can be divided into cold rolled strip continuous galvanizing line and hot rolled strip continuous according to the different raw material.
ICold Rolled Strip Continuous Galvanizing Line
Line main feature：
Raw material：strip width: 600-1550mm
strip thickness: 0.2-1.2 (1.5)mm
cold rolled low carbon iron SPCC, SPCD, FH; accords with GB13237-91, JIS G 3141-1996
Coating layer：GI,GA,GF；weight：60-300g/m2
Product quality：accords with GB/T 2518-2004
Line speed：entry section 0-240mpm; process section 0-180mpm; exit 0-240mpm
Annum output ：100,000-300,000tpy
Energy saving style：heat recovery of flue gas, SUNNY patent
Continuous annealing furnace：Radiant tubes heating, vertical or horizontal
Fuel type：natural gas, liquefied petroleum gas, mixed gas, coke oven gas, and electricity
Welding machine：narrow lap seam welder
Degreasing style：chemical degreasing+ electrolytic degreasing+ three stages water rinsing, vertical or horizontal
Zinc pot type：ceramic induction zinc pot
Air wiper：SUNNY patent
Skin pass mill：four-roll wet, max. roll force 4000KN
Stretch leveler： two bend units, one straighten unit
Passivation/anti-fingerprint：roll coating style
Oiling style：electrostatic oiling
Electric system：PLC, AC frequency conversion control system
Automatic instrument：PLC, intelligent auto control system
Line technics flow：
The cold rolled strip continuous annealing galvanizing line, includes the functional section and equipment of annealing deoxidation, zinc coating, skin pass mill, stretch leveler, passivation/anti-fingerprint etc.
Typical layout of annum output below 150,000tpy CGL
Typical layout of annum output over 150,000tpy CGL
The technics flow shows below：
Coil loading→ payoff reel→ crop shear→ welding→ degreasing(alkali spray + alkali brush+ electrolytic cleaning+ water brush + 2 stages water rinsing) → dryer→ (entry looper→) annealing and deoxidizing→ zinc coating →air jet cooling → water quenching→ dryer→ skin pass mill→ stretch leveler→ passivation→ anti-fingerprint →dryer→(exit looper→)oiling→ cutting→ tension reel→ coil unloading→ packing
Main feature of the line：
1.The line is with complete function and can produce different kinds of product.
2.Adopts radiant tube indirect heating technique, the heating can be easy controlled, and it will get the uniform heating and good strip shape; uses light ceramic fiber will as the inner lining of the annealing furnace, which has the advantage of quick furnace building and low thermal inertial etc.
3.A cleaning section will be seated, which combines chemical degreasing and electrolytic degreasing, to improve the degreasing effect, clean the oil stain, and iron dust of the strip surface.
4.In the furnace, adopts protective gas recycle jet cooler and frequency conversion adjustment, which can get the effect of quick and uniform cooling, and the temperature of the strip entering the zinc pot can be controlled accurately.
5.Adopts skin pass mill, which can improve the surface quality of the products efficiently, eliminate the yield point elongation, improve the coating and cold draw performance of the products.
6.Uses the stretch leveler with two-bending-one-straight units which will improve the strip shape and surface quality, enhance the products competitiveness.
7.Adopts flue gas heat recovery technique of SUNNY patent to heat the alkali liquor of the degreasing section and supply hot air for all line driers, which improve the heat utilization efficiency and decrease the running cost of the line.
8.Adopts coating layer thickness gauge, which can real time monitor and feedback the actual weight data to guide the adjustment of the air wiper (or realize close loop control).
9.Adopts SUNNY patent air wiper, which can control the coating layer weight and quality well.
10.Adopts native advanced electrostatic oiler to carry through the thin layer oiling.
11.The CPC, EPC will use the imported equipment, which ensures the steady produce of the line.
12.Adopts AC frequency driving control system, which has good human-machine interface and the maintenance of the equipment is easy.
II Hot Rolled Strip Continuous Galvanizing line
Line main feature：
Raw material：strip width: 600-1550 mm, strip thickness: 1.5-4.0 mm
Acid cleaned hot rolled low carbon iron coil, with no or little oil.
Coating layer：GI, GA, GF; weight: 60-300 g/m2
Product quality：accords with GB/T 2518-2004
Line speed：entry section 0-130mpm; process section 0-100mpm; exit 0-130mpm
Annum output：200,000 ? 300,000 tpy
Energy saving style：heat recovery of flue gas, SUNNY patent
Continuous annealing furnace：NO oxidation furnace (NOF) + Radiant tubes (RTF), horizontal
Fuel type：natural gas, liquefied petroleum gas, mixed gas, coke oven gas
Welding machine：double rolling lap seam welder
Degreasing style：chemical degreasing+ electrolytic degreasing+ three stages water rinsing, horizontal (can be omitted)
Zinc pot type：ceramic induction zinc pot
Air wiper：SUNNY patent
Skin pass mill：four-roll wet, max. roll force 6000KN
Stretch leveler：two bend units, one straighten unit
Passivation/anti-fingerprint：roll coating style
Oiling style：electrostatic oiling
Electric system：PLC, AC frequency conversion control system
Automatic instrument：PLC, intelligent auto control system
Line technics flow：
The hot rolled strip continuous annealing galvanizing line, includes the functional section and equipment of annealing deoxidation, zinc coating, skin pass mill, stretch leveler, passivation/anti-fingerprint etc. 
Hot Rolled Strip Continuous Galvanizing line
The technics flow shows below：
Coil loading→ payoff reel→ crop shear→ welding→ degreasing(alkali spray + alkali brush+ electrolytic cleaning+ water brush + 2 stages water rinsing) → dryer→ (entry looper→) deoxidizing→ zinc coating →(alloying)→ air jet cooling→ water quenching→ dryer→ skin pass mill→ stretch leveler→ passivation→ anti-fingerprint →dryer→(exit looper→) oiling→ cutting→ tension reel→ coil unloading→ packing
Main feature of the line：
1.The line is with complete function and can produce different kinds of product.
2.Combines NOF and RTF, which can heat quickly and got high heat efficiency.
3.The cleaning section will be set or cancelled according to the requirement of client.
4.Sets alloying furnace, which can produce alloying products.
5.In the furnace, adopts protective gas recycle jet cooler and frequency conversion adjustment, which can get the effect of quick and uniform cooling, and the temperature of the strip entering the zinc pot can be controlled accurately.
6.Adopts skin pass mill, which can improve the surface quality of the products efficiently, eliminate the yield point elongation, improve the coating and cold draw performance of the products.
7.Uses the stretch leveler with two-bending-one-straight units which will improve the strip shape and surface quality, enhance the products competitiveness.
8.Adopts flue gas heat recovery technique of SUNNY patent to heat the alkali liquor of the degreasing section and supply hot air for all line driers, which improve the heat utilization efficiency and decrease the running cost of the line.
9.Adopts jet flow ceramics induction zinc pot, which has the advantage of quick heating, temperature equalization, long operating life and few cadmia etc.
10.Adopts coating layer thickness gauge, which can real time monitor and feedback the actual weight data to guide the adjustment of the air wiper (or realize close loop control).
11.Adopts SUNNY patent air wiper, which can control the coating layer weight and quality well;
12.Adopts native advanced electrostatic oiler to carry through the thin layer oiling.
13.The CPC, EPC will use imported equipment, which ensures the steady produce of the line.
14.Adopts AC frequency driving control system, which has good human-machine interface and the maintenance of the equipment is easy.
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