Basic Info.
Model NO.
DX51D+Z DX52D+Z DX53D+Z DC51D+Z DC52D+Z DC53D+Z SG
After-sales Service
Negotiate According to Specific Products
Warranty
Negotiate According to Specific Products
Standard
ASTM, JIS, GB, AISI, DIN, BS
Certification
ISO, RoHS, IBR
Standard Width
610/750/762/914/925/1000/1200/1219/1250/1500/1524m
Surface Finish
Zero, Regular, Mini Spangle
Transport Package
Export Standard Package, Bundled or Be Required.
Specification
As requested
Product Description
Product Description
For galvanized coils, the sheet steel is immersed in a molten zinc bath to make a sheet of zinc coated on its surface. It is mainly produced by continuous galvanizing process, that is, the rolled steel plate is continuously immersed in a plating tank with zinc melted to make galvanized steel plate; alloyed galvanized steel plate. This kind of steel plate is also manufactured by hot dip method, but immediately after being out of the tank, it is heated to about 500 ºC to form an alloy coating of zinc and iron. This galvanized coil has good paint adhesion and weldability.
The main reasons for the peeling of the zinc layer are: surface oxidation, silicon compounds, the cold rolling emulsion is too dirty, the oxidizing atmosphere in the NOF section and the dew point of the protective gas are too high, the air-fuel ratio is unreasonable, the hydrogen flow rate is low, the furnace has oxygen infiltration, strip steel The temperature of entering the pot is too low, the furnace pressure in the RWP section is too low, the suction of the furnace door is too low, the furnace temperature in the NOF section is too low, the grease is not fully evaporated, the aluminum content of the zinc pot is too low, the unit speed is too fast, the reduction is insufficient, and the zinc solution stays in the liquid The time is too short and the coating is too thick.
The reasons for the occurrence of white rust and black spots are: black spots are formed by further oxidation of white rust.
The main reasons for white rust are:
(1) Poor passivation, insufficient or uneven thickness of the passivation film;
(2) The surface is not oiled or there is residual moisture on the surface of the strip;
(3) The strip surface contains moisture during coiling;
(4) Passivation is not completely dried;
(5) damp or rain-drenched during transportation or storage;
(6) The storage time of finished products is too long;
(7) The galvanized sheet is in contact with or stored together with other corrosive media such as acid and alkali.
The finished product is allowed to be stored in the warehouse for a maximum of three months to avoid oxidation caused by storage for too long.
Detailed Photos
Product Parameters
Product name | Galvanized steel Coils |
Brand Name | ZhongHeng |
Place of Origin | Shandong, China |
Shape | Round Coils |
Application | Construction, Machinery, Coal Mine, Chemical Industry, Electric Power, Railway Vehicles, Automobile Industry, Highways, Bridges, Containers, Sports Facilities, Agricultural Machinery, Petroleum Machinery, Prospecting Machinery, Greenhouse Construction |
Thickness | 0.8 - 12.75 mm/ As your require |
Length | 12M, 6m, 6.4M, Customer's Request |
Standard | EN, BS, JIS, etc |
Certificate | API, ce, Bsi, RoHS, SNI, BIS, SASO, PVOC, SONCAP, SABS, sirm, tisi, KS, JIS, GS, ISO9001 |
Technique | ERW |
Grade | Q195/Q215/Q235/Q345/10#/20# |
Surface Treatment | Galvanized |
Tolerance | ±1% |
Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
Oiled or Non-oiled | Non-oiled |
Invoicing | By theoretical weight |
Delivery Time | 8-14 days |
MOQ | 1 Ton |
Sample | Provide Sample Service |
Package | Seaworthy Standard Package |
Certifications
We have multiple quality system certifications to ensure that high-quality products reach your hands.
Packaging & Shipping
Package: Standard Seaway Package
Company Profile
Business Type | | Country / Region | |
Main Products | Cold Rolled Steel Coil, Steel Pipe, Galvanized Steel Coil, Stainless Steel Plate/Sheet, Seamless Steel Tube | Ownership | |
Total Employees | | Total Annual Revenue | |
Year Established | | Certifications | ISO9001,GB,SGS |
Trademarks | | Main Markets | Africa 20.00% Mid East 15.00% North America 10.00% |
FAQ
1. What is your payment terms?
Zhongheng Steel prefers 30%TT before inspection and the rest 70% against BL. However, our price term is negotiable. Multiple payment terms are available from us.
2. Which payment method can I choose?
Zhongheng Steel accepts all types of secured payment methods. Bank transaction, Alibaba Trading Assurance, Paypal and etc are all available from us. Please feel free to contact us about your preferred payment method.
3. Is sample providing service available?
Zhongheng Steel provides free samples to our clients. We usually also cover the sample shipping cost. Please feel free to order a sample from us.
4. Is customization available?
Zhongheng Steel's expert equipment and highly-trained workers are capable of manufacturing highly customized products. Please feel free to discuss with us about your customized requirements, we can surely meet your needs.
5. What products and materials do you supply?
Zhongheng Steel mainly supplies all catalogs and all grades of steel and stainless steel products. Coils, strips, sheet, pipes, bars, beams, flanges and other customized products. Tin coating, Ti coating, galvanization and other surface treatments are also available.
Other than steel products,Zhongheng Steel also has high production capacity and holds large ready stock of all kinds of copper and aluminum products.
Please feel free to consult us about any related products above, we can surely meet your requirements.
6. Why should I choose you?
Zhongheng Steel Industry company has deeply engaged in metal material market for over 15 years. We established perfect reputation world-widely. Craftsmanship spirit is the fundamental of Zhongheng Steel since we are established. Zhongheng Steel keeps our products as highest quality and lowest price to maintain our self competitive. Proving our clients with best trading experience is the goal we always insist of.
7. How can I make sure you are a reliable supplier?
Zhongheng Steel is willing to provide our copies of company registration certificate, Alibaba registration and Chinese exporting registration for you to view. These certificates are under Chinese Trading Law effect. They can help you officially check our company's capability and status.
On the products' side, certificates as Mill Test Certificate(MTC), Third Party Material Quality Conformity Certificate and other required certificates are available before the order. Samples are also available from us for you to test in your own testing facility. Zhongheng Steel also supports third-party inspection before shipping. Zhongheng Steel also welcomes a company tour for you to check our factory status.
Address:
2010, J1, Wanda, Gaoxin District, Jinan, Shandong, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Construction & Decoration, Industrial Equipment & Components, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Tools & Hardware
Management System Certification:
ISO 9001, ISO 9000, HSE
Company Introduction:
Shandong Zhongheng Steel Group Co., Ltd. is a large-scale steel enterprise. The company is located in Jinan City, the capital of Shandong Province with convenient transportation.
The company′s main business: Various types of steel coil, steel plate, color steel coil, angle steel, channel steel, I-beam, H-beam, cold-rolled steel plate, square tube, seamless steel tube, stainless steel tube, steel bar, galvanized sheet, galvanized steel Coils and various profiles can meet the needs of customers in different industries for special specifications of various steels, and provide comprehensive solutions for non-ferrous metal products.
With many years of experience in the steel industry, the company has a strong ability to control the market. According to the market demand, the company can adjust the inventory in a timely manner. The annual inventory is more than 10, 000 tons, which can guarantee to meet the market demand. The sales network has spread all over the country and abroad, exporting to South America, Africa, Europe, the Middle East, Southeast Asia and more than 90 countries. Widely praised in the international market, and the export volume has always maintained a leading position in China.
The company has a perfect quality management system, and has the market advantages of full inventory and fast delivery.
Zhongheng Company adheres to the mission of "creating excellent quality and achieving a better life", and strives to become a beautiful enterprise that is respected by society, trusted by customers and proud of employees.