Sunny Science & Technology Development Co., Ltd.
Main products:Hot dip Galvanizing Line,Hot dip Galvalume Line,Continuous Annealing Line,Color Coating Line,Silicon Steel Continuous Annealing Line,Skin Pass Mill,Tension leveler,Air knife,Annealing Furnace,Walk beam
Products
Contact Us
  • Contact Person : Mr. Fang Zhenyan
  • Company Name : Sunny Science & Technology Development Co., Ltd.
  • Tel : 0086-27-59715059
  • Fax : 0086-27-59715060
  • Address : Hubei,Wuhan,8-15, street SBI, optic valley, East-lake High-tech Development District, Wuhan
  • Country/Region : China
  • Zip : 430074

Hot dipped galvanized steel strip coil with high quality

Hot dipped galvanized steel strip coil with high quality
Product Detailed
Material: hot rolled strip Spec.:1.5-4.0*800-1250mm Capacity: 400,000tpy Economical long term durability MOQ: 50 tons

About us

Experienced manufacturer and trading company We have 12 processing lines We get ISO9001,ISO14000 Good reputation and famous trade mark

 

About the Coil

Product specification

Thickness range: 1.5~4.0mm

Width range: 800~1250mm

I.D.: 610mm

O.D.: max.2000mm, min.1200mm

Coil weight: max.25t

1.Our hot dip galvanizing lines, one is HR CGL with capacity of 400.000tpy,the other one is CR CGL with capacity of 300,000tpy,total capacity is 700,000tpy

 

2.Surface structure: skin pass mill rolled spangle, zero spangle, mini spangle, zero spangle and Zn-Fe alloy

 

3.Surface treatment: chrome passivation and/or oiling, chrome free passivation and/or oiling, chrome free anti-fingerprint

 

4.Product dimension, coil diameter, coil weight.

Grade

Nominal thickness (mm)

Nominal width (mm)

Coil I.D (mm)

Coil. O.D (mm)

Weight

Common galvanizing(Z)

0.25-1.5

800-1250

610 or 508

900-2100

coil«25

Galvannnealing (ZF)

0.25-1.5

800-1250

610 or 508

900-2100

coil«25

Zn-Al (ZA)

0.25-1.5

800-1250

610 or 508

900-2100

coil«25

Al-Zn alloy (AZ)

0.25-1.5

800-1250

610 or 508

900-2100

coil«25

 

5.Coating layer surface structure

Surface structure

Code

Instruction

Purpose

Normal spangle

N

In common condition, zinc layer cools down and condensates into spangle after galvanizing.

Common purpose

Zero spangle

M

Adopt a special process to interfere solidification of coating metal to get required surface structure. In this way only tiny spangles sometimes invisible formed.

Used in case that normal spangle cannot meet appearance requirements.

Zn-Fe alloy

ZF

Adopt heat treatment to make steel diffuse into zinc coating to get required structure, which is in uniform dark grey and without luster.

Suitable for painting.

Skin pass mill rolled

SP

Coating structure after rolled by skin pass mill, it has no metallic luster which is benefit for improving appearance or decoration painting.

Used in case to satisfy high requirement of surface quality, also can be used for base metal of color coating

 

6.Coating weight

Surface structure

Coating grade

Double sides coating weight, min, g/m2

Coating weight theoretical reference value, single point per side (µm)

Density g/m2

Three point test

Single-point test

Typical value

Range

Pure zinc coating(Z)

Z100

100

85

7

5-12

7.1

Z140

140

120

10

7-15

Z200

200

170

14

10-20

Z225

225

195

16

11-22

Z275

275

235

20

15-27

Z450

450

385

32

24-42

Z600

600

510

42

32-55

Zn-Fe alloy coating (ZF)

ZF100

100

85

7

5-12

7.1

ZF120

120

100

8

6-13

ZF140

140

120

10

7-15

 

7.Product property

Grade

Tensile test

r90

n90

Coating adhesiveness

Rel Mpa

Rm Mpa

A80mm% min

Bending diameter (a=strip thickness) of different coating weight (g/m2)

«140/140

>140/140~ «175/175

>175/175

DX51D+Z DX51D+ZF

 

270~500

22

  

d=0

d=a

d=2a

DX51D+Z DX51D+ZF

140~300

270~420

26

  

DX53D+Z DX53D+ZF

140~260

270~380

30

  

DX54D+Z

120~220

260~350

36

1.6

0.18

DX54D+ZF

34

1.4

0.18

Hot dipped galvanized steel strip coil with high quality



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