- 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
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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
