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Your Reliable Partner and Galvanized Structural Steel Manufacturer in China
Sunnyda galvanized structural steel is widely used for constructing commercial buildings, institutional, residential, and industrial structures. If you have any project related to this, then you will find the ideal solution in Sunnyda.
Our galvanized structural steel can be engineered according to domestic or international building standards. With that, you can ensure steel reliability and robustness. That makes it ideal for extreme weather conditions like high winds, heavy snow loads, and high seismic criteria. Strong protection from rust and corrosion is possible.
Sunnyda galvanized structural steel can be engineered, packaged, and shipped to your location in scheduled time. You will start your project immediately.
Ultimate Guide to Galvanized Structural Steel
Sunnyda galvanized structural steel is mainly used in construction, machinery, home appliances, electronics, light industry, and other sectors. As a leading manufacturer, we offer a one-stop solution for turnkey projects.
Galvanized structural steels are available in innovative, construction friendly, and cost-effective design. Sunnyda continuously developed premium-quality steels to meet market demand.
Our galvanized structural steel is constructed using high-grade material and sophisticated technology. We can even fabricate galvanized structural steel products for you. Depending on the specification provided, we can make the best solution.
With the support of our senior engineers and designers, we are able to present a specific array of galvanized structural steel.
Over the years, Sunnyda steels are patronized by well-known vendors in various industries. We have done projects for irrigation, raceways, telecom shelter, bus ducts, and many more. You can feel at ease with the availability of galvanized structural steel.
Sunnyda galvanized structural steel meet national and international requirements. We are enlisted as one of the leading metal fabrication manufacturers in China.
There is a full in-house fabrication system to manufacture galvanized structural steel easily. If you feel hesitant about your design, our engineers may create from your own idea or working sets of architectural drawings.
All of our galvanized structural steel contains strong protection against harsh environmental conditions. From the smallest components to the largest structural elements, galvanized structural steel withstand for a long time.
Steel has a longer lifespan, able to extend its life for more than 50 years. With that, you can reduce maintenance costs over its life.
Sunnyda galvanized structural steel is trustworthy and reliable. In just a few weeks, we can deliver your galvanized structural steel at the scheduled time. But before it leaves the factory, it is further inspected and tested in various standards.
We are exporting products to Middle East, Asia, Europe, Africa, and South America countries and regions.
Are you looking for galvanized structural steel for your upcoming project? Look no further, Sunnyda can provide the best solution for whatever project you need. We are ready to assist you with your steel needs.
Give us a call today!
Galvanized Structural Steel FAQ
Table of Contents
Introduction
Q1: What is Galvanized Structural Steel?
Q2: What Are The Application Of Galvanized Structural Steel?
Q3: What Are The Benefits Of Galvanized Structural Steel?
Q4: How Galvanization Protect Structural Steel From Corrosion?
Q5: What Are The Production Process Of Galvanized Structural Steel?
Q6: What Are The Types Of Steel Materials Used To Produce Galvanized Structural Steel?
Q7: What Are The Shapes Of Galvanized Structural Steel?
Q8: What Are The Specifications Of Galvanized Structural Steel?
Q9: Does Manufacturer Provide Galvanized Structural Steel Design?
Q10: What Are The Coating Thicknesses Applied To Galvanized Structural Steel?
Q11: What Are The Standards Of Galvanized Structural Steel?
Q12: How Long Does Galvanized Structural Steel Last?
Q13: What Are The Services Related To Galvanized Structural Steel?
Q14: Does Manufacturer Provide Galvanized Structural Steel Customization?
Q15: Does Manufacturer Accept Third Party Inspection For Galvanized Structural Steel Orders?
Q16: Does Manufacturer Provide Testing Reports For Galvanized Structural Steel?
Q17: Does Manufacturer Offer Galvanized Structural Steel Sample or Prototyping?
Q18: Does Manufacturer Keep Stock Of Galvanized Structural Steel?
Q19: What is The Minimum Purchase Requirement Of Galvanized Structural Steel?
Q20: Where Do You Deliver Galvanized Structural Steel?
Q21: How Long Will It Take To Get A Galvanized Structural Steel Order Delivered?
Q22: Why China Galvanized Structural Steel Are Preferred?
Q23: Why Choose Sunnyda Galvanized Structural Steel?
Q24: What Covers The Warranty of Galvanized Structural Steel And For How Long?
Q25: Where Are You Located And When Are You Open?
Q26: Request A Free Galvanized Structural Steel Quote or Consultation?
Introduction
If you are interested in galvanized structural steel, this frequently asked questions document is intended to provide steel importers, buyers, structural steel designers and engineers with comprehensive details about galvanized structural steel applications, types, materials, standards, galvanization methods used, corrosion protection, services offered, customizations options and more.
Please feel free to contact us for further information at:
Q1: What is Galvanized Structural Steel?
Galvanized structural steel is a category of steel produced in different shapes and coated with a zinc layer through a galvanization process that involves immersing structural steel into molten zinc to obtain metallurgical zinc bonds that forms a barrier and prevent corrosion. Galvanized structural steel can be formed in a wide variety of shapes such as I-beam, H sections, L-beam, Z shape, HSS shape, L shape (angle), structural channel (C-beam, cross-section), T shaped, rail profile, bar, open joist of web steel, hollow cross-sections, tubing, circles, etc.
Galvanized structural steel is preferred in the engineering and construction industry because it offers extended durability, strength, formability, versatility, and maximum protection from corrosion and harsh environmental conditions effects on steel. Also, because of its aesthetic appeals and economic cost throughout its lifecycle, it has become today a must for modern architecture.
Galvanized Structural Steel
Q2: What Are The Application Of Galvanized Structural Steel?
Because of its reactive nature against corrosion and high strength to weight ratio, galvanized structural steel constitutes a sustainable choice for applications where rust resistance, durability, cost-effectiveness, and aesthetics are a necessity. It’s widely used in various industries including:
Construction
General buildings, modern structural steel buildings, architecturally exposed structural steel (AESS), modern architectural structures, skyscrapers, residential, commercial and industrial buildings, facades, gates, fences, roofs, walkways, balconies and even sculptures, lighting columns
Infrastructure
Road, rail, bridges, airport buildings, road barriers, highways, railways, electrical utilities, water and waste treatment plants, etc.
Industrial
Large-span industrial warehouses, workshops, storage facilities, production machinery, equipment parts, bodies of cars, trucks, bicycles, etc.
Oil & gas structures
Chemical and petrochemical plant structures, pipe bridges; oil and gas equipment and infrastructures, energy and power plants, etc.
Sports and leisure
Stadiums, multipurpose court, cultural facilities, community sports facilities, recreational and center, entertainment cubs, event tents, etc.
Agriculture
Barns, silos, farms storage facilities, farming equipment warehouse, harvesting equipment parts, shelters, riding arena, livestock equipment, cowshed, poultry shed and watering systems, etc.
Q3: What Are The Benefits Of Galvanized Structural Steel?
Galvanized structural steel provides measurable benefits such as long term corrosion protection, high strength as well as many other benefits including:
Durability
Using galvanized structural steel protects completely the steel surface from corrosion and prolongs its life, it can provide between 35 to 150 years of protection. In rural environments galvanized structural steel can last up to 50 years to first maintenance, while in urban and coastal environments with severe exposure, it can last from 25 to 35 years only because of the presence of atmospheric corrosion pollutant such as Sulphur Dioxide (SO2) which affect the performance of galvanized structural steel and controls the rate of zinc’s atmospheric corrosion.
Galvanized structural steel lifetime predictability is usually estimated based on the coating thickness requirements and severity of environmental impacts.
Galvanized structural steel is highly durable as it can withstand maximum load of external forces such as seismic forces, wind, cyclones, storms, heavy rains and snow. In addition to that galvanized structural steel is pest-resistant and fire-retardant.
Performance In Different Environments
Due to its high corrosion protection mechanism galvanized structural steel can be used in all environments despite the variations in atmospheric conditions, galvanization process creates a zinc patina that forms a protective barrier between the structural steel base and the corrosive substances and moisture in the outdoor environment; this is known as cathodic protection, where the zinc patina protects the structural steel and acts as a sacrificial metal that corrodes very slowly instead of the protected steel base.
Galvanized structural steel can withstand different environment with variable corrosion rate including:
Rural, coastal and industrial areas.
Warm dry atmospheres.
Atmospheric moisture areas.
Submerged in water steel structures.
Embedded in concrete/soil steel structures.
Sustainability
Nowadays, Galvanized structural steel is used in a wide context to support sustainable construction objectives, construction developers and architects are increasingly using it to balance the cost, achieve long-term durability, and ensure the profitability of their buildings. Galvanized structural steel lowers environmental impact as zinc and steel are natural materials that can be recycled.
Cost-effective
Galvanized structural steel is cost-effective throughout its life cycle as the initial investment can result in long-term protection, once the structural steel is galvanized, the steel surface will not require further painting or maintenance for decades, for this advantages galvanized structural steel is an economic alternative for applications where corrosion resistance is needed without the cost of stainless steel.
Complete Protection
Applying galvanization to structural steel ensures full coverage of internal and external steel surfaces including even inaccessible areas, sharp corners and recesses; this process forms a metallurgical structure to the overall steel base. Moreover, galvanized structural steel offers greater resistance to any mechanical damage such as scratches and abrasion, because galvanized structural steel self-repairs when damaged, zinc sacrifices itself to protect the base steel.
Aesthetic Appeals
Aesthetics are essential to every construction project; galvanized structural steel offers an attractive satiny, modern gray finish. The galvanized structural steel can be either left in its galvanized finish, or powder coated, primed or painted as per customers’ colors preference. Furthermore, the high strength-to-weight ratio and ductility of galvanized structural steel allow more design flexibility and versatility, while the galvanization ensures the overall appearance will remain protected and beautiful for decades.
Environmentally Friendly
Galvanized structural steel is produced using resource-efficient, natural and abundant materials such as steel and zinc which can be reused and 100% recycled. Good manufacturing practices are applied, fewer natural resources are consumed, and negative environmental impacts are minimized.
Using galvanized structural steel supports the initiative of leadership in energy and environmental design (LEED) in terms of innovative design, construction, maintenance of green buildings and resource efficiency.
Q4: How Galvanization Protect Structural Steel From Corrosion?
Zinc used in the structural steel galvanization process creates a protective patina or layer over the whole steel surface which forms a barrier between the steel substrate and corrosive elements in the atmosphere such as water, moisture, salt, acids, corrosive chlorides and sulfides that attack the structural steel. Corrosion is an electrochemical process that causes galvanic corrosion which occurs usually between two metals of different atomic structures, one constitutes the anode (zinc) and the other is the cathode (base metal) in the presence of an electrolyte such as water and salt. In this process one of the two metals corrodes preferentially when it comes in electrical contact with each other, however, since zinc is in contact with the metal base, it constitute always the anode and react actively to slow the corrosion of the base metal, and corrodes instead of the steel to ensures an extendable life of the galvanized structural steel.
Q5: What Are The Production Process Of Galvanized Structural Steel?
Galvanized structural steel production passes by many processes set for objective to offer a high strength galvanized structural steel that ensures maximum durability and corrosion protection; the following are the main production process:
Structural steel production process
Carbon steels are the primary materials used in structural steel production, this type of steel offers strength, ductility and weldability, the carbon steel is made from steel, carbon and other alloy elements such as manganese, phosphorus, sulfur, copper and aluminum are added in different percentage to improve the steel overall performance and economics of use. Manganese constitutes an essential additive that improves the machinability and binding of steel.
The ratio of carbon in structural steel is an important factor that determines the structural steel weldability, lower carbon content allows easy welding and offers more malleability to create the desired structural steel shape and configurations as per design specifications. While a higher carbon ratio offers more strength and lowers the finished structural steel ductility, a lower carbon percentage makes structural steel welding easy but harder to work. Carbon quantity used is dependant on the galvanized structural steel application requirements.
Galvanization process
Before galvanizing the structural steel, steel surface is cleaned using degreasing, to remove mill scale iron oxide and fluxing to erase any oxides, once the structural steel is completely clean and dry. Then many types of galvanization techniques can be used to galvanize structural steel; the most used methods are as follow:
Hot-dipped galvanized steel
Hot-dip galvanization is a zinc coating technique which involves submerging the carbon steel into a bath of molten zinc at a temperature of around 680 – 840 degrees Fahrenheit, this process is mostly preferred because it guarantees the structural steel surface is fully coated by zinc and ensure maximum corrosion resistance in all environmental circumstances. Once the steel is removed from the zinc bath and cooled; a 100% zinc metallurgical bond is created as a result of this reaction. The finished hot-dip galvanized structural steel offers a crystalline finish or a spangled finish.
This method is economical; it can be used to produce large quantities in less time, and can be applied to complex shapes and large structural steel.
Electro-galvanization
Electro-galvanization passes by electroplating process in which an electrical current is used to transfer zinc ions to the steel and form zinc layer, the operation passes in an electrically charged zinc/saline solution with a zinc anode (positive pole) and cathode (structural steel parts/ negative pole) and a steel conductor.
This method offers a uniform finish and a precise coating thickness, while it provides a thinner coating than the one can be achieved by hot-dip galvanizing, which can reduce the corrosion protection.
Q6: What Are The Types Of Steel Materials Used To Produce Galvanized Structural Steel?
A wide range of steel materials can be used to manufacture stronger and workable galvanized structural steel, most materials are categorized as per their chemical composition, and the following are widely used:
Carbon-manganese steels
This is also known as carbon steel or mild structural steel, it’s made from chemical components that include iron, carbon and manganese. Because of its material properties this type of steel is acceptable for many applications as it offers high strength and ductility in addition to the economic cost.
High-strength low-alloy steel (HSLA)
High-strength low-alloy steel (HSLA) is an alloy steel type that provides better mechanical properties and greater resistance to corrosion than carbon steel, carbon content of 0.05 – 0.25%, up to 2.0% manganese and other alloying elements are used to increase the steel tensile strength.
High-strength tempered and quenched alloy steels
Quenching and tempering are the processes of strengthening and hardening steel or iron-based alloys; it involves heating the material and rapidly cooling it. Tempering quenched steel makes the steel more ductile and less brittle without sacrificing its hardness and therefore results in harder, tougher, weldable and ductile steel more even than carbon steel.
This type of steel is used in galvanized structural steel because of its high strength and abrasion resistance. It contains a carbon content that ranges from 0.20 to 0.60% and alloy elements such as manganese, chromium, molybdenum, etc.
Galvanized Structural Steel
Q7: What Are The Shapes Of Galvanized Structural Steel?
Galvanized structural steel can be virtually formed in a wide variety of shapes and sizes including large structural steel or as per the application requirements. The following are the commonly used shapes:
I-Beam.
L-beam.
Universal beams.
L shape (angle).
Z shape.
HSS shape.
Structural channel (C-beam, cross-section).
Parallel flange channels
T shaped.
U-shaped.
Universal columns.
Flat Sections
Circular Hollow Sections.
Rail profile.
Rectangular Hollow sections.
Square Hollow Sections.
Structural square tubing.
Bar, rod and plate.
Open joist of web steel.
L-Shaped Cross-section.
M-Shaped Cross-section.
C-Shaped Cross-section.
S-Shaped Cross-section.
W-Shaped Cross-section.
Tapered flange beams.
Angled Sections.
Q8: What Are The Specifications Of Galvanized Structural Steel?
Standard: GB, AISI, JIS, ASTM, BS, DIN.
Certification: CE marked, ISO 9001:2015, ISO 14001:2015 and Bureau Veritas.
Size: standard or as per customers’ measurements.
Shape: standard or custom designed.
Coating thickness: as per application requirement.
Galvanization Finish: shiny, smooth, rough or dull coating finish, silver color, grey color, speckled surface, grainy and matte surface.
Surface treatment: galvanized, primed, and painted options.
Q9: Does Manufacturer Provide Galvanized Structural Steel Design?
Galvanized structural steel design requirements shall be discussed firstly with designer, galvanizer and steel supplier at the design and production stages to respond effectively to the project specification requirements. Filling, venting and draining are important processes that will improve the quality and appearance of the galvanizing coating.
Strength, rigidity and load resistance are analyzed carefully in the design phase to eliminate any failure risk under any applied forces. Galvanized structural steel design shall be made in accordance with good corrosion design practice and standards. Galvanized structural steel appearance and pattern size vary depending on the steel chemistry, cooling rate and steel surface condition. Continuous, uniform, shiny, dull, rough or smooth coatings are formed.
Galvanized Structural Steel
Q10: What Are The Coating Thicknesses Applied To Galvanized Structural Steel?
Galvanized structural steel coating thickness shall be determined as per the steel thickness set out in EN ISO 1461 and ASTM A123 / A123M coating specifications; In general, the applicable galvanized coatings standards ranges from 3-8 mils (75-200 microns) thick, it is also noted that thicker steel can obtain a thicker zinc coating and longer corrosion protection, while the yearly zinc corrosion rate is less than 1µm and a zinc coating of 85µm zinc thickness can ensure a maintenance-free life for decades.
Q11: What Are The Standards Of Galvanized Structural Steel?
Galvanized structural steel specifications and delivery conditions shall adhere to a set of international standards as below:
Structural steel standards
This standard specifies the general specifications for structural steel design and building construction.
This European standard describes the tolerances, dimensions and sectional properties of cold-formed welded steel structural hollow sections.
The technical delivery conditions for hot finished hollow sections of non-alloy and fine grain steels are determined by this standard.
General standards for corrosion of metals and alloys; corrosivity of atmospheres; classification, determination and estimation.
Zinc coatings – Guidelines and recommendations for the protection against corrosion of iron and steel in structures.
Galvanization standards
The three governing ASTM specifications for hot-dip galvanizing are as follow:
Standard specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.
Standard Specification for Zinc Coating (Hot-Dip) on Iron and Hardware.
Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement.
Standard Practice for Providing High-Quality Zinc Coatings (Hot-Dip).
Specifications and test methods for hot-dip galvanized coatings on fabricated iron and steel articles.
Galvanized Structural Steel
Q12: How Long Does Galvanized Structural Steel Last?
Galvanized structural steels are long-lasting being made from high-strength steel which can last for decades; in addition to that it’s protected by galvanization which can ensure between 35 to 170 years of corrosion protection in all environments with no maintenance. However, predicting the life expectancy of galvanized structural steel remain dependant on several factors such as environmental conditions and coating thickness requirements, for example in the most corrosive atmospheres, a galvanization of (>1/4-inch thick) can ensure 72-73 years of corrosion protection to first maintenance.
Q13: What Are The Services Related To Galvanized Structural Steel?
Fully integrated services and solutions can be provided to meet clients’ specifications and deliver fully fabricated and ready to erect galvanized structural steels made at the highest quality standards. The following services can be provided:
- Design, engineering, steel detailing and building information modeling.
- Welding engineering and Laser welding.
- Cut to Size / Measures, Tube laser cutting and Custom cut.
- Drilling, Punching and Bolting Connections.
- Surface treatment and finishing.
- Hot Dip Galvanizing, Metalizing, Abrasive Blasting.
- Same day or next day delivery.
- After-sales service.
Q14: Does Manufacturer Provide Galvanized Structural Steel Customization?
Yes, absolutely. The highest level of customization options is provided to meet the unique demands of different galvanized structural steel applications, the latest mechanical and fabrication software and machinery are used to design and manufacture the highest quality and accurate galvanized structural steel in a wide variety of shapes, sizes, steel grades, standards, coating types, surface finishes, color preferences and more.
To respond to all customers requirements, manufacturer can custom design simple, complex, heavy or light galvanized structural steel with limitless customization options that suit the needs of the most challenging architectural designs, functional and aesthetic requirement, either for residential use, community, commercial, industrial, mining, etc.
Q15: Does Manufacturer Accept Third Party Inspection For Galvanized Structural Steel Orders?
Yes, absolutely. Manufacturer accepts third party inspection from all inspection firms including:
- Bureau Veritas (BV inspection).
- Bay Source Global.
- SGS
- QIMA
- V-Trust
Galvanized Structural Steel
Q16: Does Manufacturer Provide Testing Reports For Galvanized Structural Steel?
Yes, manufacturer should provide all material reports and tests related to galvanized structural steel.
Q17: Does Manufacturer Offer Galvanized Structural Steel Sample or Prototyping?
Yes, a single sample or prototype is provided free of charge while delivery fees are paid by the client.
Q18: Does Manufacturer Keep Stock Of Galvanized Structural Steel?
Yes, manufacturer keeps stock of a large range galvanized structural steel to fulfill customers’ order requirements in different sizes and grades. Galvanized structural steel can be also prepared and cut in half or into small pieces to ease handling within hours. Items that are not held in stock can be delivered the next day.
Q19: What is The Minimum Purchase Requirement Of Galvanized Structural Steel?
Customers can purchase any quantity of galvanized structural steel either for small or large-scale projects. Minimum purchase quantity is applied only to customized and special shape galvanized structural steel.
Q20: Where Do You Deliver Galvanized Structural Steel?
Galvanized structural steel is available for local and international buyers, and can be delivered everywhere in the World, the most economic rates and reliable shipping services can be offered through our logistics partners.
Galvanized Structural Steel
Q21: How Long Will It Take To Get A Galvanized Structural Steel Order Delivered?
Domestic orders of galvanized structural steel normally take 2-5 days of shipping, while, international orders are delivered to customers’ location within 2-4 weeks of shipping.
Q22: Why China Galvanized Structural Steel Are Preferred?
China market regroups major players of galvanized structural steel manufacturers that design, engineer, fabricate and export the most competitive structural steel to the World. Chinese manufacturers’ focus their efforts to develop a galvanized structural steel based on the latest technological advancement in design, machinery, material and innovation to respond effectively to the increasing domestic and international demand in the construction and structural steel buildings.
Q23: Why Choose Sunnyda Galvanized Structural Steel?
Headquartered in Shanghai, Sunnyda is one of the largest fabricators of galvanized structural steel in China, with state-of-the-art manufacturing facilities of 1,000,000 square feet, equipped whit the latest technology machinery and managed by a talented team of experts’ leaders and specialists. We can produce proudly 1,000,000 tons yearly of structural steel exported to different countries markets including Europe, United States, Canada, Australia, South America, Asia, the Middle East and Africa. Sunnyda is proud today to design, engineer, manufacture and export the largest selection of galvanized structural steel and to meet the fast-changing demands of international market.
Thus, whether you are looking for galvanized structural steel for small, medium or large project, whatever is the size, shape, specifications or customization level required, Sunnyda is your one-stop-shop that provides full solutions and integrated services. With over 10,000,000 square feet of warehouse space, we can fulfill all of your urgent requirements in big or small quantity on time and on budget.
Whatever your project we can custom fabricate your galvanized structural steel to any shape to respond effectively to the specifications of the latest cutting-edge modern building and creative architectural designs for residential, commercial, industrial, community buildings, public infrastructure and oil and gas steel structures projects, either for small or large-scale structures or low, medium or high-rise buildings.
To ensure quality and accuracy, we are equipped with the most innovative machinery and testing materials in addition to our management system is standardized and recognized by ISO 9001:2015, ISO 14001:2015, Bureau Veritas and CE marked.
Galvanized Structural Steel
Q24: What Covers The Warranty of Galvanized Structural Steel And For How Long?
Galvanized Structural steel warranty covers loads, spans bearing capacity, materials and workmanship and corrosion protection for 1-year warranty.
Q25: Where Are You Located And When Are You Open?
Welcome to visit Sunnyda factory. We are located in No. 29, Huahui Road, Songjiang District, Shanghai, China.
We are open from Monday to Friday from 8 am to 5 pm.
Q26: Request A Free Galvanized Structural Steel Quote or Consultation?
Send us your project details and requirements, we will get back to you as soon as we can, contact us at: