Steel Structure

Leading Steel Structure Manufacturer

Qingdao Ruigang Steel Structure Co., Ltd. is a national high-tech enterprise specialized in design, manufacture and installation of steel structure. There are a variety of building types to choose from, including: steel structural frame, steel frame structure system, prefab warehouse buildings, etc.

Multi-level Steel Parking Garage
Size: Customizable
Price: USD 29.9-69.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Multi-Story Steel Building
Payment: T/T, L/C
Product origin: QIngdao,China
Shipping port: Qingdao port
Lead Time: about 30 days
Price: 29-59 usd/sqm
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Pre-Engineered Metal Building Structure
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 199 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Office Building
Size: Customizable
Price: USD 29.9-69.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Nut Processing Plant
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days Payment method: T/T, L/C
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Steel House Frame
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Warehouse Prefabricated
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Steel Structure Shop
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Multi-story Steel Parking
Size: Customizable
Price: USD 29.9-69.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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High Rise Steel Structure Building
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Steel Multi-story Car Park
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Metal Construction Building
Size: Customizable
Price: USD 29.9-59.9 per square meter/negotiable
Minimum order quantity: 500 square meters
Delivery time: 30 days
Payment method: T/T, L/C
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Why Choose Us

Production Capacity
This expansive site spans more than 50,000 m² and is home to a comprehensive manufacturing facility that includes five production halls and two administrative sections. With a workforce numbering around 115, the company prides itself on its cadre of seasoned engineers who tailor designs to fit specific client requirements.

Production Equipment
Steel Correcting Machine, CNC Flame Cutting Machine, Laser Cutting Machine, Submerged Arc Welder, Sand Blasting Machine, Crane, CNC surface drilling, Color steel tile forming machine, Plasma Cutting Machine, Painting Line.

Quality Assurance
Our products have passed strict ISO, SGS, CE certification and comply with our engineering and manufacturing policies, practices and procedures. Our manufacturing and engineering policies, practices, and procedures are audited annually and held to the highest standards in the industry.

Global Market
With more than 20-year unremitting efforts, Ruigang has gained rich experience on exportation. Its annual export volume is up to USD 20 million and products are widely applied in more than 70 countries and regions.

Types of Steel Structure

Prefab Warehouse Buildings

They are renowned for reducing construction time, lowering costs, ensuring high quality through controlled manufacturing processes, and offering flexible design options.

Steel Frame Structure System

Steel Frame Structure System are quick to install, extremely durable, cost-effective, flexible in design and customizables, providing an efficient and environmentally friendly living solution.

Steel Structural Frame

A Steel Structural Frame is a building system using steel beams and columns to support loads and ensure stability.

Product Specification

Items		Specification
Main Steel Frame	Column	Q235,Q345 Welded H Section Steel
Main Steel Frame	Beam	Q235,Q345 Welded H Section Steel
Secondary Frame	Purlin	Q235 C and Z purlin
Secondary Frame	Bracing	Q235 Round Bar,Angle Steel,Steel Pipe
Roof and wall	Insulation	EPS/Fiber glass wool/Rock wool/PU
Roof and wall	Sheeting	PPGI single Sheet
Accessories	Windows	Aluminum Alloy /PVC Window,etc.
	Doors	Sliding/swing sandwich panel door/Roll-up Door
	Draining system	Stainless/PPGI single sheet gutter+ PVC pipe
Loading requirements		As customized
Earthquake-resistance		9 Grades
Life time		Up to 50 years
Anti-rust options		Anti-rust painting(Alkyd/Epoxy) or Galvanized
Color		Customized Color

Advantages of Steel Structure

Construction safety

Steel structure makes a safe finished product. It’s treated with a coating to be resistant to both fire and water, and it can withstand storms and earthquakes.

lightweight material

Lighter than wood, concrete and brick, in a strength to weight ratio. steel structural has a high strength relative to its weight.

Durable

Steel structure is highly tensile, meaning it can withstand significant impacts without breaking. It’s also resistant to corrosion.

Cost-effective

The material itself and its efficiency in construction make steel structural an excellent economical choice.

Flexibility

Structural steel is a highly ductile or malleable material. You can efficiently work it into various shapes and sizes to serve different purposes.

Environmentally sustainable

Steel structure is an excellent choice for those concerned with the afterlife of their materials because almost 100 per cent of steel products are infinitely recyclable.

Application of Steel Structure

Buildings

Steel structure is used to construct the frames of all types of buildings, from tiny residential homes to large commercial skyscrapers.

Bridges

Steel structure is the primary material used to build bridges of all sizes, from small footbridges to large multi-span bridges.

Other infrastructure

Steel structure is also used to build other types of infrastructure, such as roads, railways, and power lines.

Industrial structures

Steel structure is used to build various industrial structures, such as factories, warehouses, and power plants.

Ships and other vessels

Steel structure is the primary material used to build ships and other vessels, such as boats, barges, and oil rigs.

Our Steel Structure Anti-corrosion and Surface Treatment Method

Metal Protective Layer: The metal protective layer is a metal or alloy with cathodic or anodic protection. Through electroplating, spraying, chemical plating, hot plating and permeation plating, a metal protective layer is formed on the surface of the metal that needs to be protected ( Membrane) to isolate the contact between metal and corrosive media, or use electro-chemical protection to protect the metal to prevent corrosion.

Chemical ProtectionLayer: A chemical or electrochemical method is used to form a corrosion-resistant compound film on the surface of the steel to isolate the contact between the corrosive medium and the metal to prevent corrosion of the metal.

Non-metal Protective Layer: Use paint, plastic, enamel and other materials to form a protective film on the metal surface through brushing and spraying methods to isolate the metal from the corrosive medium, thereby preventing the metal from being corroded.

Types of Steel Structural Connections

01/

Welded connections
Welding is a commonly used method in the production of steel structures. This method utilizes heat (through flames or electric arcs) to locally heat the metal at the contact point until it melts and gradually blends.

02/

Bolt connections
Bolt connections in steel structures have been popular for a long time. This type of connection is established by fastening two components together using bolts and heavy-duty nuts.

03/

Riveted connections
This technique involves placing rivets into the openings of the components that need to be connected and fastening the end of the rivet to ensure the components remain intact.

04/

Lapped Connections
They use two overlapping plates welded along their edges to create a strong bond between two steel structures. Lapped connections are typically used when space is limited, or other fastening methods are not feasible because of environmental conditions such as corrosion or moisture buildup on the joined surfaces.

Manufacturing Process

Design Preparation: The initial step in the steel structural fabrication process is design preparation. This phase involves creating project drawings and specifications, leading to the development of a detailed Bill of Material (BOM) and Bill of Operations (BOO).

Material Selection: Steel structure comes in several grades and thicknesses, depending on the project specifications, and engineers select a steel type that ensures optimal performance and strength.

Cutting and Drilling: Raw steel sections are cut using high-precision techniques, such as sawing, oxy-fuel cutting, or plasma cutting.

Bending: Bending technology molds the component into its intended shape. Rolling mills, press brakes, and other advanced machinery are used to accomplish this step.

Welding: The steel components are welded together using manual metal arc (MMA) welding or metal active gas (MAG) welding, adhering to strict quality management conditions.

Quality Control: Strict quality control measures are implemented throughout the fabrication process, ensuring adherence to client specifications, weld integrity, and dimensional accuracy.

Finishing: Upon successful quality checks, the steel undergoes sandblasting and painting to protect against corrosion.

Delivery, Assembly, and Installation: In the final step, the steel is delivered to the site and assembled as per the required design. The assembly process usually involves bolting, riveting, or welding the steel parts together. The fabricated steel parts must be handled carefully to avoid any damage.

Customization Process

Talk to our professionals

The process starts with a conversation with our knowledgeable professionals. They’ll help you understand your options, guide you through the initial steps, and customize a steel structure to suit your needs.

Receive a Custom Building Quote

Based on your specifications, you’ll receive a custom steel structure quote. This quote will include all the details and projected costs associated with your project.

Sign Off on Order

Once you’re satisfied with the quote, you’ll sign off on the order. This step confirms that all the details are correct and you’re ready to move forward.

Down Payment

A down payment is required to secure your order. This payment allows us to begin fabrication and schedule your delivery.

Corrections

If any corrections or adjustments are needed, they will be made at this stage. This helps us guarantee that the final product will meet your specifications.

Order Form Becomes a Contract

After all corrections are made and you’re satisfied with the details, your order form becomes a binding contract. This step solidifies your order and initiates the fabrication process.

Order is Sent Off for Fabrication

Your order is then sent to our manufacturing facility, where your steel structure will be fabricated according to the specifications outlined in your contract.

Delivery

The shipment includes your steel framing, exterior cladding, and any optional accessories you included with your order. You pay the balance of your order with a cashier’s check upon delivery.

Other Services

1.Delivery time: Typically, we complete deliveries within 30 days. Our project management ensures punctual completion and shipment, so you can rest easy regarding timelines.

2.Payment Methods: We provide various payment methods such as wire transfers, credit card, T/T, L/C, Visa, etc.

Payment Terms

We have two payment terms. 30% advance payment before producing by T/T, and 70% balance by T/T before shipping. 100% irrevoable L/C.

Shipping method

We ship them by sea freight. You need to rent container trucks and forklifts locally to arrange truck transportation for these goods, please contact your freight forwarder and they will arrange everything.

Packaging

We use wooden boxes for packaging and then fill them with bubble wrap for extra protection to prevent collisions and damage to the products during transportation.

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FAQ

Q: Are you a manufacturer or a trading firm?

A: Positioned in Qingdao, China, near Qingdao Port, we are a direct manufacturer known for our stringent quality management practices, expert design personnel, substantial production capacity, and deep-rooted industry expertise.

Q: How do we maintain quality control?

A: 1) We collaborate exclusively with trusted suppliers providing top-tier raw materials, ensuring all incoming supplies pass a 100% inspection threshold.
2)Every team member holds relevant certifications and undergoes periodic evaluations to uphold our standards of excellence.
3)Quality assurance is embedded in our production process through a three-tier inspection system: self-inspection by operators, peer reviews among colleagues, and final checks by workshop supervisors. Only items that pass these inspections move forward.
4) Pre-delivery audits are conducted to confirm that each shipment matches the order list accurately and comprehensively.

Q: Do you offer container loading inspections?

A: Inspections at any time are welcome, and we can also assist with SGS inspections upon request.

Q: How can I obtain a quick quote?

A: For a rapid quotation, please submit your preliminary project drawings to us, and we will respond within two business days. Alternatively, we can clarify a few details with you before promptly providing a detailed quotation.

Q: Is your pricing competitive against other companies?

A: As a direct factory source, we assure you of competitive pricing alongside guaranteed quality.

Q: Regarding project installation, what support can you offer?

A: We can provide on-site guidance by sending an engineer. For comprehensive team deployment, we recommend local arrangements as they tend to be more cost-effective.

Q: Do you provide detailed installation instructions?

A: Yes, we offer comprehensive installation drawings that meticulously document the assembly process for each component. Additionally, installation videos are available to guide you through the process step-by-step.

Q: Could you send us Foundation bolts in advance?

A: Yes, we can, we can send you in advance by LCL, or if you have purchase from other supplier, we can deliver there and loaded with that container. We will also send you foundation drawing with it.

We're professional steel structure manufacturers and suppliers in China, specialized in providing high quality customized service with low price. We warmly welcome you to wholesale cheap steel structure for sale here from our factory.

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