Product Description
There are two widely used methods for applying zinc coating on steel coils:
Hot-dip galvanising (HDG) technology is used to create a protective layer by immersing a steel strip into a bath of molten zinc. Hot-dip galvanised steel coils can be produced by continuous galvanising lines with non-oxidising annealing furnaces (the Sendzimir method and its variations) or by applying wet or dry flux (the Cook-Norteman method and its modifications). Hot- or cold-rolled non-annealed (full-hard) steel coils are used as feedstock for continuous hot-dip galvanising lines with non-oxidising annealing furnaces. The production process involves electrochemically cleaning, drying and annealing the strip to obtain the required mechanical properties, followed by immersing the material into a bath of molten zinc and controlling zinc thickness. The strip then undergoes forced cooling and finishing (passivation, oiling, levelling, drying and coiling the galvanized coil). When using lines that apply wet or dry flux, feedstock (before it is galvanized) should have the required set of mechanical properties since such lines do not have annealing furnaces. The strip is first degreased with an alkali solution and pickled in acid, following which a smooth layer of flux composed of a combination of zinc chloride, ammonia chloride and various additives is applied to the strip. The strip is then put into a strand furnace with a protective atmosphere, where the flux is dried, and is immersed into a bath of molten zinc. The flux completely removes residual pickling substances and moisture from the metal surface, and the thin film reduces the surface tension of zinc and ensures the best moistening of the metal surface. Hot-dip galvanising technology is fairly universal and is widely used in construction, machine building and other industries. It is used by both large steel mills and re-rollers/coaters.
Electrolytic galvanising is an electro-chemical process in which a layer of zinc is applied in a bath of acid or alkali electrolytes. The main idea of this technology is to use oxidising and reducing reactions, during which electrons move through the electron transport chain, while zinc ions in the electrolyte flow from anode to cathode. This type of coating is usually used for thin-gauge material; the coating thickness is normally 5-12 μm and it accurately follows the shape of the product. The absence of intermediate brittle layers makes electrolytic zinc coating more plastic compared with coating applied via hot-dip galvanizing. Major application areas for such products include automotive, transport and machine building, among others.
| Q/BQB 420-2003 |
EN 10142:2000 |
EN 10142:1990 |
JISG3302-1994 |
ASTMA653M-2002 |
| EN 10147:2000 |
EN 10147:1991 |
| EN 10292:2000 |
|
| DC51D+Z(St01Z,St02Z,St03Z),DC51D+ZF |
DX51D+Z,+ZF |
FeP02GZ,ZF |
SGCC |
CS Type C |
| SGHC |
DC52D+Z(St04Z)
DC52D+ZF |
DX52D+Z,+ZF |
FeP03GZ,ZF |
SGCD1 |
CS Type A,Type B |
DC53D+Z(St05Z)
DC53D+ZF |
DX53D+Z,+ZF |
FeP05GZ,ZF |
SGCD2 |
FS Type A,Type B |
| SGCD3 |
| distinguish |
Surface and Appearance Requirements |
| home appliances |
Micro-wave oven(L/S), home appliance side panels, etc. |
Use smooth small spangle or zero spangle hot-dip galvanized steel strip, and the defects that must not exist include rust, corrosion, perforation, delamination, serious head-up lines, impact damage, fold marks, serious edge burrs, large waves, Intensive periodic concave and convex points, obvious zinc slag, zinc spot, galvanized line, zinc layer falling off |
| Appliance door panels (T/R,H/G)wait |
Use zero-spangle hot-dip galvanized steel strip, and the defects that must not exist include rust, corrosion, perforation, delamination, severe head-up lines, impact damage, fold marks, serious edge burrs, large waves, and dense periodic bumps. , Obvious zinc slag, zinc spot, galvanized line, zinc layer peeling off |
| architecture |
Building exterior decoration (C/S) |
Use smooth small spangle or zero spangle hot-dip galvanized steel strip, and the defects that must not exist include rust, corrosion, perforation, delamination, serious head-up lines, impact damage, fold marks, serious edge burrs, large waves, Intensive periodic concave and convex points, obvious zinc slag, zinc spot, galvanized line, zinc layer falling off. To some extent, the surface roughness is allowed to be slightly larger |
Our Advantages
WIDE APPLICATION
Hot-dip galvanized coils can be divided into hot-rolled galvanized coils and cold-rolled hot-dip galvanized coils, which are mainly used in construction, home appliances, automobiles, containers, transportation and household industries. Especially steel structure construction, automobile manufacturing, steel silo manufacturing and other industries. Their main features are: strong corrosion resistance, good surface quality, conducive to deep processing, economical and practical, etc.
SUFFICIENT STOCK
Galvanized coil factory direct sales, complete models, sufficient inventory, welcome to inquire, honest management, large quantity and high price, factory direct supply, spot supply welcome your consultation, professional management of automotive steel, galvanized coil, hot-dip coil, Sufficient stock of various models.
Attention to detail
Zhengde hot-dip galvanized strip steel is produced with hot-rolled strip steel as the substrate through pickling, cold rolling, heating reduction, galvanizing and other technological processes. Its products can fully meet the international leading standards and can be obtained in the construction industry. A large number of applications can also be used in industries such as automobiles, railway locomotive manufacturing, warehouse board manufacturing, highway guardrails, etc. The surface spangles can be customized according to requirements.
Provide deep processing
Galvanized steel coils can be processed according to customer requirements: one-stop service such as processing Kaiping, galvanized steel coil slitting, cutting small plates, and door-to-door delivery. The galvanized steel coil slitting width is 5mm-1500mm, and the thickness is 0.1mm-3mm.
Quality first: production and inspection in strict accordance with production standards;
Price advantage: discounts based on real market prices;
Transaction security: There will be no loss of customer funds;
After-sales guarantee: the customer's problem is our problem;
Long-term cooperation: quality assurance, price advantage, sincere service can last for a long time.
Detailed Photos
Packaging & Shipping
Company Profile
Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper and other metal products integrated large enterprises. Five production and sales bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan and Tai'an, with more than 100 production lines, 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries and regions such as North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.
Certifications
FAQ:
1. Are you a trading company or a factory?
A: We are a direct factory with more than 30 years of production experience, a professional technical team, production team, overseas sales team, can solve various problems for you
2 .What's your advantage?
A: Great products with competitive price and professional service on export business.
3. How I believe you?
A : We consider honesty as the core of our company, we can tell you the contact information of our some other clients for you to check our credit. Besides, there is trade assurance from Alibaba, your order and money will be well guaranteed.
4.Can you give warranty of your products?
A: Yes, we extend a 100% satisfaction guarantee on all items. Please feel free to feedback immediately if you are not pleased with our quality or service.
5.Where are you? Can I visit you?
A: Sure,welcome to you visit our factory at any time.
6.How about the delivery time?
A: We have multiple warehouses, some products are in stock, and we can ship them to you immediately!
Other products that need to be produced will be produced within 10-15 days at the earliest according to your requirements; large orders will be produced according to the specific situation.
7.what kind of payment does your company support?
A: T/T, 100% L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me.
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