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Hot Dip Galvanized Coil

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Galvanized Steel Coil

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WhatsApp : +8618954226796

Email: sales1@taihangmetals.com

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Hot Dip Galvanized Coil Description

Hot dip galvanizing is to make the molten metal react with the iron substrate to produce an alloy layer, so that the substrate and the coating are combined. Hot galvanizing is to pickle the steel and iron parts first. In order to remove the iron oxide on the surface of the steel and iron parts, after pickling, it is cleaned by ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank, and then sent into the hot dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.
Hot-dip galvanizing is one of the effective means to delay the environmental corrosion of iron and steel materials, it is the surface of the cleaned, activated iron and steel products immersed in molten zinc, through the reaction and diffusion between iron and zinc, in the iron and steel products surface plating good adhesion of zinc alloy coating. Compared with other metal protection methods, the hot-dip galvanizing process has advantages in the protection characteristics of the combination of physical barrier and electrochemical protection of the coating, the bonding strength of the coating and the substrate, the compactness, durability, maintenance-free and economy of the coating, and its adaptability to the shape and size of the product. At present, hot-dip galvanized products mainly include steel plates, steel strips, steel wires, steel pipes, etc., of which hot-dip galvanized steel plates account for a large proportion.
The production process of hot galvanizing is as follows:
Mother material → degreasing → water washing → pickling → water washing → rinsing → flux solution → drying → hot galvanizing → cooling → inspection → packaging

Scope of Application

For a long time, hot-dip galvanizing process has been favored by people because of its low plating cost, excellent protection characteristics and beautiful appearance. It is widely used in automobile, construction, household appliances, chemical industry, machinery, petroleum, metallurgy, light industry, transportation, electric power, aviation and marine engineering and other fields.

Product Parameters

Product Name	Hot Dip Galvanized Coil
Thickness	0.12mm-3.5mm
Width	600mm-1500mm
Length	508mm/610mm, 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

FACTORY APPEARANCE

Whether it is carbon steel, stainless steel, galvanized, color-coated or profiles, we have in-depth research and rich practical experience. Each product embodies our efforts and wisdom to ensure that we provide customers with the highest quality and most reliable steel products.

PACKING AND DELIVERY

We can provide,
wooden pallet packaging,
Wooden packing,
Steel strapping packaging,
Plastic packaging and other packaging methods.
We are willing to package and ship products according to the weight, specifications, materials, economic costs and customer requirements.
We can provide container or bulk transportation, road, rail or inland waterway and other land transportation methods for export. Of course, if there are special requirements, we can also use air transportation

CUSTOMER FEEDBACK

We strictly control product quality to ensure that every ton of steel meets national standards and provide customers with high-quality products. At the same time, we pay attention to after-sales service and always provide customers with thoughtful services, which has won the trust and praise of customers. We serve global customers with a global vision.

WHY CHOOSE TAIHANG STEEL

For the steel industry, customers value quality and after-sales service the most. We always adhere to high standards and strict requirements and are committed to becoming your preferred partner.

Quality Assurance

We are well aware that quality is the lifeline of the steel industry. Therefore, we adhere to strict quality control processes to ensure that each batch of steel products meets national standards and provides solid protection for your projects.

Industry Experience

With many years of industry experience, we have a deep understanding of market demand and can provide customized products and services according to customer needs to ensure that your business is fully supported.

Professional Team

We have a professional team with rich technical knowledge and practical experience. No matter what problems we encounter, we can respond quickly and provide effective solutions.

After-sales Service

We value the feedback of every customer and provide a full range of after-sales services to ensure that you have no worries during the cooperation process.

PRODUCT MEASUREMENTS

GET A FREE QUOTE

If you have any needs, we can tailor professional steel solutions for you.

WhatsApp : +8618954226796

Email: sales1@taihangmetals.com

APPLICATION AREAS

Automotive

Shipbuilding

Building Manufacturing

Machine Manufacturing

FAQ

Q:Once the products received by customer were found not comply with the products or contract demands, what will you do?

A:Our goods have passed QC inspection before export and provide regular MTC for customer review. In case of quality disputes, the customer shall inform the supplier within 7 working days after receiving the goods and arrange the international third party to carry out inspection and send the damage report to the supplier. Once confirmed by our company, our company unconditionally reissue or return shipping refund！

Q：How about the payment terms?

A:We accept a variety of payment terms, but there are specific restrictions: 1.Amount less than Fifty thousand dollars,we only accept TT payment; 2.Amount from $50,000 to $300,000,we accept TT deposit and balance by LC at sight; 3.Amount more than $300,000,we can do LC 180 days upon little down payment. Finally, we can provide OA service for our frequent customer cooperation and who have a good reputation & professional in their local market.

Q:Whether to accept inspection company and factory？

A：Whether you choose to work with us or not. We accept different customers personally or commissioned third parties to audit factory and company.And hereby promise not to charge any inspection fee or guarantee deposit in advance.

Q:How to ensure that the quantity and material delivered meet customer requirements?

A:We will take a video of each package of goods and record the pieces/weight of the goods. And material inspection through PMI.And assure all customers that if the quantity or material of the goods you receive does not match the order and send the exact evidence. Our company will fine you ten for one fake

Q:What is the delivery time?

A:Depends on whether the goods are in stock and the quantity. Stock Materials: Generally 7-10 days to complete the cutting and packaging and shipment; Customized Materials:About 20-30days for production and arrange the shipment.

Q：What is your MOQ?

A:All the materials at least for 2tons,but the price it’s relatively expensive. Up to 50 tons, a maximum discount of 5% is offered; 50 tons to 200 tons,can provide discount 5%-10%; More than 200tons can get discount 10%-20%. The larger the tonnage, the greater discount we can offer. Every Chinese and foreign holidays, our company has a lot of different strong discounts, welcome to pay attention to the company news consultation.

Galvanized Steel Coil