Galvanized Corrugated Roof Sheet

Summit Metal Group Co., Ltd.

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Galvanized Corrugated Roof Sheet

Galvanized roof shingles are made of galvanized steel sheet used for roofing and coated with zinc. The zinc coating provides moisture and oxygen protection for the base steel. According to the galvanizing process, it can be divided into hot-dip galvanized steel plate and electro-galvanized steel plate. The corrugated design improves its strength and enable it to withstand harsh weather conditions.

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Product Description

Galvanized Corrugated Roof Sheet Description

Common designs of galvanized corrugated roof sheet include wavy, trapezoidal designs, ribbed galvanized roof panels, etc. It can be used as a single-layer board, covering an existing roof, or a steel sandwich panel. Galvanized sheet itself is more cost-effective than traditional roofing materials. In addition, it is light in weight and easy and quick to install. In addition, it is durable and recyclable and requires less maintenance. All these factors make galvanized roof panels an economical choice. Galvanized steel roof panels have a bright and smooth surface. The corrugated design is also excellent from the outside. In addition, it has good adhesion, so you can paint it in different colors. Having a galvanized steel roof makes it easy to achieve aesthetic purposes.

Scope of Application

Galvanized corrugated roof panels have good corrosion resistance and long service life. Therefore, it is widely used in industry, commerce, residence and agriculture. Its wide application includes temporary houses, garages, greenhouses, warehouses, barns, stables, sheds, factories, commercial buildings, etc.

Product Parameters

Product Name	Galvanized Corrugated Roof Sheet
Thickness	0.12mm-6.00mm
Width	600mm-1500mm
Length	1m-12m, Support Customization
Standard	AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.
Zinc Layer	Hot Galvanizing: 60-275g/m²
Zinc Layer	Pre-galvanized: 80-275g/m²

Chemical Composition

Standard	Grade	C	Si	Mn	P	S	Ti
Forcold Forming Chinese Standard	DX51D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX52D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX53D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX54D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX56D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX57D+Z	0.12	0.50	0.60	0.100	0.045	0.30
Forcold Forming Japanese Standard	SGCC	0.15	0.50	0.80	0.050	0.030	0.025
	SGCD1 SGCD2	0.12 0.10	0.50 0.50	0.60 0.45	0.040 0.030	0.030 0.030	0.025 0.025
	SGCD3	0.08	0.50	0.45	0.030	0.030	0.025
	SGCD4	0.06	0.50	0.45	0.030	0.030	0.025
For Structure Japanese Standard	SGC340	0.25	0.50	1.70	0.200	0.035	0.025
	SGC400 SGC440	0.25 0.25	0.50 0.50	1.70 2.00	0.200 0.200	0.035 0.035	0.150 0.150
	SGC490	0.30	0.50	2.00	0.200	0.035	0.025
	SGC510	0.30	0.50	2.50	0.200	0.035	0.025
For Structure AISI Standard	S220GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S250GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S280GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S320GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S350GD+Z	0.20	0.60	0.70	0.100	0.045	0.150
	S550GD+Z	0.20	0.60	0.70	0.100	0.045	0.150

Mechanical Properties

Grade	Yield Strength MPa≥	Tensile Strength MPa≥	Elongation A%≥
DX51D Z/ZM/AZ/AM	240-380	270-500	22
DX52D Z/ZM/AZ/AM	140-300	270-420	26
DX53D Z/ZM/AZ/AM	140-260	270-380	30
DX54D Z/ZM/AZ/AM	120-220	260-350	36
S220GD Z/ZM/AM	220	300	20
S250GD Z/ZM/AZ/AM	250	330	19
S280GD Z/ZM/AM	280	360	18
S300GD A/AM	300	380	18
S320GD Z/ZM/AM	320	390	17
S350GD Z/ZM/AZ/AM	350	420	16
S450GD A/AM	450	480	15
S550GD Z/ZM/AZ/AM	550	550	-

Galvanized Surface Selection

Zero Spangle	Minimized Spangle	Normal Spangle	Large Spangle

Use of The Environment	Recommended Zinc Thickness
Indoor Use	Z10 or Z12 (100g/㎡or 120g/㎡)
Suburbs	Z20 and Painting (200g/㎡)
Urban or Industrial Area	Z27 (270g/㎡) or G90 (US Standard) and painted
Coastal Area	Thicker than Z27 (270g/㎡) or G90 (US Standard) and painted
Punch or Deep Drawing Application	Thicker than Z27 (270grams/㎡) or G90 (US Standard) avoid coating peeling after stamping

Surface Treatment Type	Code	Features
Chromic Acid Treatment	C	Good corrosion resistance, suitable for bare state
Chromic Acid Treatment+Oiling	S	Good corrosion resistance
Phosphoric Acid Treatment (Including Sealing Treatment)	P	Have a certain corrosion resistance, good paint performance
Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling	Q	Has a certain corrosion resistance, good paint performance, prevent rust during transportation and storage
Phosphoric Acid Treatment (Excluding Sealing Treatment)	T	Have a certain corrosion resistance, good paint performance
Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling	V	Has a certain corrosion resistance, good paint performance, and prevent rust
Oiling	O	Prevent rust during transportation and storage
No Treatment	M	Suitable for immediate painting

Material Comparison

Chinese Standard	Japan Standard	European Standard
DX51D Z/DC51D Z (CR)	SGCC	DX51D Z
DX52D Z/DC52D Z	SGCD1	DX52D With
DX53D Z/DC53D Z/DX54D Z/DC54D Z	SGCD2/SGCD3	DX53D Z/DX54D Z
S220/250/280/320/350/550GD Z	SGC340/400/440/490/570	S220/250/280/320/350GD Z
DX51D Z/DD51D Z (HR)	SGHC	DX51D Z

Product Application

Packaging and shipping

Factory Display

FAQ

1. What are your main products?
We primarily deal in carbon steel (hot-rolled/cold-rolled sheets, coils, pipes, and bars), structural steel (angle bars, channel steel, I-beams, H-beams, square/rectangular tubes, etc.), galvanized products (galvanized sheets, coils, pipes, and profiles), and aluminum products (sheets, coils, profiles, and bars). We can also supply other steel varieties based on customer requirements.

2. Are you a manufacturer or a trader?
We are a comprehensive service provider integrating trading, processing, and distribution. We maintain close partnerships with major steel mills in Vietnam and the surrounding region, ensuring a stable supply chain. Additionally, our in-house processing center offers value-added services, combining the flexibility of a trader with the service capabilities of a processing plant.

3. Do you accept small-batch orders? What is the minimum order quantity (MOQ)?
Yes, we support small-batch and trial orders. The MOQ is typically one container (approx. 20–25 tons), depending on product specifications and dimensions. MOQs for aluminum products can be lower; please contact us for details.

4. What is the typical delivery time?
For standard products, delivery takes 15–30 days after receipt of the deposit, depending on order volume, product type, and current production scheduling. Stock items can be delivered sooner. Delivery times for customized orders will be longer, and we will inform you in advance.

5. What payment methods do you accept?
We generally accept T/T (Telegraphic Transfer) and L/C (Letter of Credit). More flexible payment terms can be negotiated for long-term clients. Specific ratios (e.g., 30% down payment and 70% balance) can be adjusted based on the order value and credit status.

6. What processing services do you offer?
We provide services such as cutting, punching, bending, welding, uncoiling, and leveling. We also offer customized deep processing of profiles based on technical drawings. All processing is performed in-house to ensure quality control and timely delivery.

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