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The Production Process of Hot-Dip Galvanized Steel Grating
Hot-dip galvanized steel grating is widely used in various industries due to its high strength, durability, and anti-corrosion properties. This article will introduce the detailed production process of hot-dip galvanized steel grating.
Material Preparation
The first step in the production of hot-dip galvanized steel grating is the selection and preparation of raw materials. High-quality carbon steel bars are commonly used as the main material. These steel bars should meet specific standards in terms of chemical composition and mechanical properties to ensure the quality of the final product. The bars are carefully cut into appropriate lengths according to the design requirements of the steel grating.
Welding Process
After the material is prepared, the steel bars are assembled and welded to form the basic structure of the grating. There are two main welding methods: pressure resistance welding and manual arc welding. Pressure resistance welding is a more efficient and commonly used method. In this process, the cross bars and bearing bars are placed in a welding machine, and under high pressure and electric current, they are welded together at the intersection points. This method ensures strong and uniform welds, improving the overall strength and stability of the grating. Manual arc welding is usually used for some special or small-scale production requirements, where welders use arc welding equipment to manually weld the bars. However, this method requires higher skills from the welders and is more time-consuming.
Pretreatment before Galvanizing
Before hot-dip galvanizing, the welded steel grating needs to undergo a series of pretreatment processes to ensure the quality of galvanizing. First, it is degreased to remove any oil, grease, or dirt on the surface of the grating. This can be achieved by using chemical degreasing agents or through mechanical methods such as ultrasonic cleaning. After degreasing, the grating is pickled to remove rust and oxide layers on the surface. Pickling is usually carried out in an acid solution, which reacts with the rust and oxide to dissolve them. After pickling, the grating is thoroughly rinsed with water to remove any remaining acid.
Hot-Dip Galvanizing Process
The hot-dip galvanizing process is the core step in the production of hot-dip galvanized steel grating. The pretreated steel grating is immersed in a molten zinc bath at a temperature of about 450°C. At this high temperature, a metallurgical reaction occurs between the iron in the steel and the zinc in the bath, forming a series of zinc-iron alloy layers on the surface of the steel. The thickness of the galvanized layer can be adjusted according to different requirements by controlling the immersion time and the composition of the zinc bath. After being taken out of the zinc bath, the galvanized steel grating is allowed to cool naturally. During the cooling process, the zinc layer solidifies and forms a smooth and dense protective layer on the surface of the grating.
Quality Inspection
After the production process is completed, a strict quality inspection is carried out on the hot-dip galvanized steel grating. Visual inspection is first performed to check for any surface defects such as cracks, pores, or uneven galvanizing. Then, the thickness of the galvanized layer is measured using specialized instruments to ensure that it meets the specified standards. In addition, the mechanical properties of the grating, such as its load-bearing capacity and tensile strength, are also tested. Only the products that pass all the quality inspection items can be released from the factory.
In conclusion, the production process of hot-dip galvanized steel grating involves multiple steps, from material preparation to quality inspection. Each step is crucial to ensure the production of high-quality, durable, and corrosion-resistant steel grating products that meet the needs of various industries.
The hot dip galvanzied steel gratings will be packed by steel belt,packed into steel pallet.
It is easy to be deliveried by forklift.
Anping County Jintai Metal Product Co.,Ltd. was established in 2006,which is a professional manufacturer of various kinds of steel grating,galvanized steel grating,steel stair tread,trench cover and fence,welded mesh panel,welded wire mesh,galvanized iron wire and black iron wire.
Anping County Jintai Metal Product Co.,Ltd. is located in An ping County which is the "Native land of wire mesh"in China,We have the automatic computer controlled forged welding machines,bending machines,high welding machines and other advanced facilities.
The steel grating products offered by Anping County Jintai Metal Product Co.,Ltd. enjoy uniform spacing,precise sizes,smooth surfaces and high strength welding and the quality is approved by our clients.The products are:Flat steel grating(also called Smooth steel grating) and serrated steel grating (also called tooth steel grating ),closed steel grating and open steel grating,hot dip galvanized steel grating and untreated steel grating,stair tread and trench cover (also called ditch cover),Painted steel grating,Stainless steel grating,Aluminium steel grating,Press locked steel grating,Compound steel grating,Special type steel grating,I bar steel grating,Heavy duty steel grating and light duty steel grating,FRP grating (Fiber glass grating).
In addition to the steel grating productions,Anping County Jintai Metal Product Co.,Ltd. Also can supply other wire mesh products,such as Fence,Welded wire mesh,Welded mesh panel,Re bar welded mesh,Galvanized iron wire and Black annealed iron wire.All the wire mesh products have good quality and best price.
The products of Anping County Jintai Metal Product Co.,Ltd. are widely used in industry,agriculture,cultivation,construction,transport and mining.We export our products to USA,Australia,Canada,Poland,Middle East,Africa,the Czech Republic,Italy,Thailand,Singapore and France.
Jintai Metal product have passed ISO9001 International Quality System Certificate.All of our products comply with international quality standards and very greatly appreciated in a variety of different markets throughout the world.
We have a perfect sales team with basic qualities of responsible for customers can provide good after-sales service.Plenty of experience and high quality are all available for you! We cordially hope to establish long-term business relationships with worldwide friends.We deliver what we promise!Please contact us if you are interested in us,we can help you to get what you want! Looking forward to your inquiry,Cooperation can help us to get the Win-Win situation.
Galvanized steel grating is an ideal product for wet, slippery situation where corrosion resistance is vital. The mild steel gratings are hot dipped galvanized in the galvanizing bath. The galvanizing bath has got 7 tank surface cleaning process, the purity of the zinc used for hot dipped galvanizing shall be 99.95 % pure. The galvanized coating shall be as per IS-3202/IS-4759 / IS-2629/IS - 2633/IS-6745,ASTM -A -123 or equivalent to international standards. The appearance of surface is plain or serrated
Galvanized steel grating is widely used in most general industrial plants as well as commercial buildings, it has wide applications as walkways, platforms, safety barriers, drainage covers and ventilation grates. It is also ideal for use as mezzanine decking since it supports the same loads as comparable solid flooring. More than that, its cost saving openness maximizes the circulation of air, light, heat, water and sound, while promoting cleanliness.
Material:carbon steel
Surface treatment:hot-dipped galvanized
Widths:2'or 3'
Lengths:20' or 24'
Galvanized steel grating is available in: Grade 2 (Medium) or Grade 3 (Coarse)
Available in light duty and heavy duty
Available in welded, press-locked, swaged lock or flush mount construction
FEATURES:
* Can be purchased in stock sizes or custom fabricated to meet the project specifications.
* Excellent load bearing capabilities
* Ventilation of air, light, sound
* Don't collect Liquid and debris
* Long service life
* Wide range of open areas
* Galvanized steel grating has an unmatched surface. It is also a permanent replacement for slippery serrated and plain grating.
* It's available in many different styles and spacing options to meet a variety of needs and applications.
* Anti-theft design: the cover and the frame is joint with hinge offering security, safety and open convenience.
* High strength: the strength and the toughness are much higher than cast iron. It can be used for terminals, airport, other large-span and heavy loading condition.
PRODUCT APPLICATIONS:
* Anti slip bridge decking
* Bridge walkway
* Drainage systems
* Fire truck platforms
* Mass transit platforms
* Marine and ship decks
* Mezzanines
* Non-slip walkways
* Non-skid pit covers
* Slip resistant platforms
* General Industries
* Truck platforms
* Vault covers
* Wet Decks
* Wastewater treatment plant grating
Special specifications can be produced by the customer's requirements.
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