Shanghai Huiyi International Co., Ltd.
Shanghai Huiyi International Co., Ltd.
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0.38mm Thickness PrePainted Galvanized Steel Sheet, GI Steel Sheet HRB70-80
Introduction of galvanised steel sheet:
Galvanized steel plate is a steel plate coated with zinc. Galvanizing is an economical and effective method of rust prevention, and about half of the world's zinc production is used in this process.
Specification of galvanised steel sheet:
| Product Name | Galvanized Steel Sheet |
| Thickness | 0.3-1.0mm |
| Width | 600-1500 mm, Normal width is 914/1000/1219/1250/1500 mm |
| Type | Steel Coil, Prepainted Steel Coil/Sheet |
| Technique | Cold Rolled |
| Zn Coating | 30-275 g/㎡ |
| Grade | SGCC, SPCC, DC51D, SGCH |
| Surface | Regular/Mini/Big/Zero Spangle,Skin pass, Chromated, Unoiled, Dry |
| Packing | Seaworthy export standard package, or according to the customers’requirement |
| Application | Building, Construction, Warehouse, Airport |
Advantage of galvanised steel sheet:
1. Strong corrosion resistance, 3 times that of galvanized steel coil.
2.The density of 55% aluminum is smaller than the density of zinc. When the weight is the same and the thickness of the plating layer is the same, the area of the galvalume steel sheet is 3% or larger than that of the galvanized steel sheet.
Surface Treatment Of galvanised steel sheet:
| Item | Classification | Symbol |
| Coating type | Al-Zn alloy | AZ |
| Surface finish | Regular spangle | R |
| Minimized spangle | M | |
| Skin passed | S | |
| Surface treatment | Chromate passivated | C |
| Non-chromate passivated | C5 | |
| Chromate passivated + oiling | CO | |
| Non-chromate passivated+oiling | CO5 | |
| Anti-fingerprint | N | |
| Non-chromate anti-fingerprint | N5 | |
| Non-chromate high weather resistance anti-fingerprint | NW | |
| Oiling | O | |
| No treatment | U |
Production procedure of galvanized steel coil
Step 1 Pre-treatment
After the cold-rolled coil arrives in the galvalume workshop, after passing through the uncoiler, through the degreasing section and the reduction furnace, the steel coil is cleaned and its components are reduced to the extent that it can be galvanized.
Step 2 Central section
The most critical technology is this step. After passing through the zinc pot, a layer of zinc layer is plated on the surface of the steel plate. After coming out of the zinc pot, it is cooled and shaped by the cooling tower.
Step 3 Post-processing
The steel plate finally comes to the post-processing stage after various processes. After finishing, straightening and passivation, and finally coiling.
Packing&Shipping
FAQ:
Q1:What are your company's main products?
A: Our main products are Carbon Steel Coil/Sheet,Galvanized Steel Coil/Sheet,Stainless Steel Coil/Sheet, round/square pipe, bar, channel, perforated shseet etc.
Q2: How do you control quality?
A: Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get ISO,SGS,Alibaba Verified.
Q3:What are the advantages of your company?
A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other steel companies.
Q4: How to get samples?
A:Free samples are available for your checking and testing.