0.9/1/1.4/1.7/1.8*1000mm Big Spangle Galvanized Steel Coil Gi Steel

• Customization: Available
• After-sales Service: 15 Days Warranty Period
• Warranty: 15 Days Warranty Period
• Model NO.: DX51D DX52D
• Certification: ISO
• Surface Treatment: Galvanized
• Technique: Hot Rolled
• Application: Container Plate
• Edge: Mill
• Stock: Stock
• Product Name: Galvanized Steel Coil
• Surface: Galvanized Coated
• Material: SGCC/CGCC/Tdc51dzm/Tdc52dts350gd/Ts550gd/Dx51d+Z Q
• Color: Grey White
• MOQ: 25 Tons
• Zinc Coating: 30-600G/M2
• Payment Term: Tt LC
• Usage: Building Structure
• Packages: Standard Sea Worthy Packaging
• Transport Package: Water Proof Paper Is Inner Packing, Galvanized Ste
• Specification: Thickness 0.12-6mm Width 600mm-1500mm
• Trademark: ZunKai
• Origin: Shandong, China
• Production Capacity: 5000 Tons / Month

Product Description

Product	Steel Coil , Steel Strip
Size	according to the order
Wall Thickness	0.4-2.0mm
Standard	GB, ISO, GOST, ASTM, JIS, DIN, BS, NF and so on
Material	Q195,Q235,Q235B (Q195A,Q215A,Q235A,Q345A)
Surface treatments	Black , oiled or as request
INSPECTION	as customer's requirements.
Usage industry	Structure, Motorbike and Automobile, Ornamental, medical equipment, Sport equipment and Home Furniture.
Packaging	Standard seaworthy packaging or as customers' requirements
Payment term	T/T, L/C at sight or negotiation.
Delivery time	Within 15 working days after receipt the down payment.
Application	Mainly used in Construction, machinery manufacturing, iron and steel construction projects, shipbuilding, solar power support, steel structure engineering, power engineering, power plant, agriculture and chemical machinery, glass curtain wall, automobile chassis, airport, etc.

 

Product Description

Galvanized steel coil, the thin steel plate is immersed in the melting zinc tank, so that the surface of the thin steel plate with a layer of zinc. The main use of continuous galvanizing process production, that is, the rolling steel plate is continuously immersed in the melting zinc plating tank made of galvanized steel plate; Alloyed galvanized steel sheet. This steel plate is also made by hot dipping, but immediately after being taken out of the tank, it is heated to about 500 ° C to form an alloy film of zinc and iron. Hot dipped galvanized steel coil has good coating tightness and weldability.
Chemical composition:

Metal type	Grade	CHEMICAL COMPOSITION %
		C	Si	Mn	P
cold rolled steel sheet	DC51D+Z (St01Z, St02Z, St03Z) , DC51D+ZF	≤0.10	-	≤0.50	≤0.035
	DC52D+Z (St04Z), DC52D+ZF	≤0.08	-	≤0.45	≤0.030
	DC53D+Z (St05Z), DC53D+ZF	≤0.08	-	≤0.40	≤0.030
	DC54D+Z (St06Z), DC54D+ZF	≤0.01	≤0.10	≤0.30	≤0.025
	DC56D+Z (St07Z), DC56D+ZF	≤0.01	≤0.10	≤0.30	≤0.025
hot rolled steel sheet	DD51D+Z (St01ZR, St02ZR)	≤0.10	-	≤0.50	≤0.035
	DD54D+Z (St06ZR)	≤0.01	≤0.10	≤0.30	≤0.025

There are many factors affecting the size of spangle of galvanized steel. When the zinc liquid composition has the conditions for the formation of zinc flowers, the following factors will affect the size of spangle:

(1) Raw material: the thicker the raw material steel plate, the smaller the surface roughness, the larger the steel spangle.
(2) Cooling rate: the faster the cooling rate, the shorter the crystal growth time, the smaller the spangle.
(3) Number of crystal nuclei: The size of spangle is closely related to the number of crystal nuclei of spangle. When the surface of steel base is rough or the surface cleanliness is poor, the spangle is relatively small. Zinc grains are formed on steel base, and the more nuclei there are, the smaller the spangle will be. This principle is used in the production process of small spangles.
(4) Other factors (production environment, etc.).


Surface treatment of galvanized steel coils:
Passivation C/ Oil O/Lacquer seal L/Phosphating P/Do not process D
1. Passivation
The galvanized layer is passivated to reduce folding corrosion (white rust) under tidal temperature storage and transportation conditions. However, the anti-corrosion performance of this chemical treatment is limited and, moreover, hinders the adhesion of most paints. This kind of treatment is generally not used in the zinc-iron alloy coating. Except for the smooth surface, as a routine, the manufacturer conducts passivation treatment on other types of zinc coating.
2. Oiled
Oiling can reduce steel plate corrosion under wet storage and transportation conditions, and re-oiling steel plates and steel strips after passivation treatment will further reduce corrosion under wet storage conditions. The oil layer should be able to be removed with a degreasing agent that does not damage the zinc layer.
3. Paint seal
An additional corrosion protection, especially anti-fingerprint properties, can be provided by applying a very thin film of transparent organic coating. Improves lubricity when forming and acts as an adhesion primer for subsequent coats.
4. Phosphating
Through phosphating treatment, galvanized steel sheets of various coating types can be coated without further treatment except for normal cleaning. This treatment can improve the adhesion and anti-corrosion performance of the coating, and reduce the risk of corrosion during storage and transportation. After phosphating, it can be used with a suitable lubricant to improve the forming performance.
5.Not deal with
The steel plates and strips supplied according to this standard may not be passivated or oiled or painted or phosphating and other surface treatments are required only if the orderer puts forward a request not to be treated and is responsible for it.

Application of galvanized steel coil:
Hot dipped galvanized steel sheet in coil mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery and commercial industries.
Among them, the construction industry is mainly used to manufacture anti-corrosion industrial and civil building roof panels, roof grids, etc.;
The light industry uses it to manufacture home appliance shells, civil chimneys, kitchen utensils, etc.
The automobile industry is mainly used to manufacture corrosion-resistant parts of cars, etc.;
Agriculture, animal husbandry and fishery are mainly used for grain storage and transportation, frozen processing equipment for meat and aquatic products, etc.;
Business is mainly used for storage and transportation of materials, packaging tools, etc.

Our Advantages

Jinan Zunkai Materials Co., Ltd

Our company founded in 2016 and we located in Shandong Province, with five departments in Shandong province and we have more than 200 employees.  Main products include hot rolled coils, cold-rolled coils, GI, PPGI, AFP 55% Al galvalume coil, we also export structural beams, steel pipe and stainless steel etc.
Our company's annual turnover is about 50 million US dollars, we also entered into strategic partnership with Bao steel, Laiwu steel, Rizhao steel, Anfeng steel, HBIS etc.

FAQ

 

Q1: What is your terms of payment?

A:  30% T/T as the upfront deposit, 70% before delivery. We will show you the photos of products and package before you pay the balance.

Q2: what is the terms of delivery?

A: EXW, FOB, CIF, CFR, DDU

Q3: What is the terms of packing?

A: generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers' requirement.

Q4: What is your delivery time?

A: For stocks, we could transport the goods to loading port within 7 days after we received your deposit.

For production period, it usually takes about 15 days-30 days after receiving the deposit.

Q5: Could you produce according to the samples?

A : Yes, we could customer-made by your samples or technique drawings, we could build the mold and fixtures.

Q6: Could you provide the compliment samples?

A: yes, we could provide the free samples on conditons it is available in stocks, however, the the transportation fee is borne by buyer.

Q7: How could you guarantee your products?

A: Each piece of products is manufactured by certified workshops, inspected by SORUN piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.