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Galvanized Coil

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Galvanized Coil

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Galvanized Steel Coil

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Galvanized Coil Description

Galvanized steel is a type of steel that is coated with zinc for protection by an electroplating process. The galvanized layer is applied to cold rolled steel at low temperatures. So EG steel is also known as cold galvanized steel. Through electrolytic galvanizing, a uniform and dense zinc layer is finally formed on the surface of the steel, but the mechanical properties of the material are still maintained. Electrogalvanized steel is usually sold in coil or sheet form. EG coil is a kind of material that can be cut, slitted and profiled for other purposes.
The steel grade of galvanized steel consists of base metal grade, galvanized (E), galvanized layer type and weight. The electro-galvanized products based on SPCC, SPCD, SPCE, SPCF and SPCG are named SECC, SECD, SECE, SECF and SECG respectively.
Full cold galvanizing process:

Chemical degreasing → hot water washing → water washing → electrolytic degreasing → water washing → acid washing → rust removal → water washing → electrogalvanizing process → water washing → passivation → hot water washing → drying → quality inspection → packaging and sales

Scope of Application

Building Materials Field
Electrogalvanizing has a wide range of applications in the field of building materials. First of all, electro-galvanizing can be used to manufacture construction steel, which not only prevents metal oxidation and prolongs its service life, but also enhances the toughness, strength and corrosion resistance of steel, and improves the performance of steel. Secondly, in the decoration of building exterior walls, electro-galvanized aluminum alloy, electro-galvanized iron alloy and other materials are also widely used, which can protect the steel structure and prevent oxidation, but also has the characteristics of beauty and fire prevention.
Automobile Manufacturing Field
Electrogalvanizing is also a commonly used material in the field of automobile manufacturing. Electro-galvanized coating can be used for surface protection and repair of automobile parts to avoid oxidation corrosion and damage, and to improve the service life of automobiles. The electro-galvanized coating can also be used in the manufacture of parts such as car frames and casings to avoid oxidation and corrosion, and improve the overall quality and durability of the car.
Home Appliance Manufacturing Field
In the field of home appliance manufacturing, galvanizing also has its important applications. For example, the manufacture of refrigerators, washing machines and other household appliances shell, lining, refrigerator and other parts, usually need to use electro-galvanized material for surface coating, to prevent metal oxidation, improve appearance and performance.

Product Parameters

Product Name	Galvanized Coil
Thickness	0.12mm-3.5mm
Width	20mm-1500mm
Length	508mm/610mm, Support Customization
Standard	AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.
Zinc Layer	Hot Galvanizing: 15-275g/m²
Zinc Layer	Pre-galvanized: 15-275g/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

Packing and delivery

We have been deeply involved in the fields of infrastructure construction and underground engineering for a long time. Our core products are grouting pipe series and advanced small conduits. We are an indispensable supplier of key materials in tunnels, subways, mines, water conservancy and various construction projects.

Packaging and shipping

FAQ

Q: How long is your delivery time?

A: Generally, if it is in stock, it will take 5-10 days, if it is not in stock, it will take 30 days.

Q: Can we send samples?

A: We can provide samples for the products you are interested in.

Q: How do we ensure quality?

A: We conduct pre-production sample testing, accept third-party or customer inspection, and conduct final inspection before shipment.

Q: How do you ensure long-term relationships?

A: We maintain high quality and competitive prices to benefit our customers. Every client is treated as a friend, we do business with sincerity and strive to build lasting relationships, regardless of origin.

Service Phone

+86 18864878811

metalfactory@jiechuangsteel.com

Address

Liaocheng, Shandong, China

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Galvanized Steel Coil