What We Are?
Dingang/Senruida has been a professional manufacturer and experienced exporter of new material,focuses on R&D,manufacturing,processing high-end roller-coating aluminium coil material products since 2002.
For the past decades,we've been growing rapidly in the industry,owning two plants of 160,000 SQM,with eight large automatic roller coating lines for aluminium sheet material products.In addition,we have stretching-bending rectifier,cleaning,draw bench,embossing,cross-cutting and vertical slitting machines.With an annual deep processing capacity of more than 20,000 tons. Over 300 skillful workers,with over 200 major projects completed worldwide,our workers pride themselves in production high quality products and taking on projects with a high level of difficulty in fabrication and coating.
In our trade with merchants of various countries,we always adhere to the principle of equality and mutual benefit.It is our hope to promote,by joint efforts,both trade and friendship to our mutual advantage.
Feature of the aluzinc steel coil:
1. Standard of Aluzinc Steel Coil: ASTM A 792
2. Surface treatment of Aluzinc Steel Coil: Chromated. Oiled, bright finish, fingerprint resistance
3. Thickness of Aluzinc Steel Coil: 0.2mm-1.2mm
4. Width of Aluzinc Steel Coil: 600mm-1 250mm, our normal width: 1000 mm, 1200mm, 1250 mm
5. Coating weight of Aluzinc Steel Coil: AZ50, AZ100, AZ150
6. Coil weight: As per customers' requests, 3-5 tons per coil generally
7. ID: 508mm.
8. Standard export packing
9. Applications: General use, construction industry, household appliance industry, automobile industry and industrial instruments
Package: Fancy package or as per customers' requests
10. Original: China
SUMMARIZATION
Aluminium-zinc alloy armor plate, is called Al-Zn coated plate for short Strips, after through three processes, including payoff reel, crop shear and welding, enter into the continuous annealing furnace. During the annealing process, strips are heated closer to the recrystallizing temperature, and then heated to 20~50º C above the recrystallizing temperature in the reducing furnace. After keeping the same temperature for 170s, strips are naturally cooled to the normal temperature in the slow cooling process. Afterward, strips enter into the zinc pot through the elephant's trunk and begin in the hot-dip coating process. The optimum temperature range of the plating coat is 630º C~660º C. Coated with aluminium-zinc alloy, strips enter into the cooling tower by the steady roll and air knife. After fast cooled with wind or water, they are directly produced into Al-Zn armor plates. The general rate of cooling is 30º C/s or so, and strips are cooled to about 60º C.
| Chemical Requiremetns for structure steel |
| Composition, %-Heat Analysis Element, maximum, unless otherwise Shown |
| Designation |
C |
Mn |
P |
S |
Cu |
Ni |
Cr |
Mo |
V |
Cb |
TiA |
NB |
| G230 |
0.20 |
1.35 |
0.04 |
0.04 |
0.25 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
0.025 |
^ |
| G255 |
0.20 |
1.35 |
0.10 |
0.04 |
0.25 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
0.025 |
^ |
| G275 |
0.25 |
1.35 |
0.10 |
0.04 |
0.25 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
0.025 |
^ |
| G340 |
0.25 |
1.35 |
0.20 |
0.04 |
0.25 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
0.025 |
^ |
| G550 |
0.20 |
1.35 |
0.04 |
0.04 |
0.25 |
0.20 |
0.15 |
0.06 |
0.008 |
0.015 |
0.025 |
^ |
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