- 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
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
