Hot Selling 140mm/165mm Width Q235 Gi Zinc Coated Steel Strip in Coil

• Customization: Available
• After-sales Service: Can Contact Supplier Any Time
• Warranty: Can Contact Supplier Any Time
• Model NO.: Q235/Q235B/Q345/Q345B/SS400
• Standard: ASTM, JIS, GB, AISI, DIN, BS
• Certification: ISO
• Surface Treatment: Galvanized
• Technique: Cold Rolled
• Application: Gi Roofing Sheet, Structure Steel
• Edge: Mill
• Stock: Stock
• Surface: Big Spangle ,Small Spangle, No Spangle
• Coil Weight: 3-5tons
• MOQ: 25tons
• Width: as Customized
• Zinc Coating: Z30-Z275
• Delivery Time: 5-7days
• Thickness: 1.2mm to 5mm
• Hardness: Soft/Hardness or as Clients Required
• Grade: SPCC/Dx51d/Dx52D
• Sample: Available
• Alloy or Not: Non-Alloy
• Length: as Customized
• Thickness Tolerance: +-0.01mm
• Type: Steel Strip,Hot Dipped,Cold Rolled
• Type Price: Fob CFR CIF Price
• Transport Package: Standard Seaworthy Package
• Specification: 0.12-5.0 mm Thickness
• Trademark: ZUNKAI
• Origin: Shandong
• HS Code: 7312900000
• Production Capacity: 100000 Tons Per Month

Product Description

 

Product Description

Galvanized steel strip is processed by ordinary steel strip pickling, galvanizing, packaging and other processes. It is widely used because of its good anti-corrosion performance. It is mainly used to make metal products that are cold-worked and no longer galvanized. For example: metal products such as light steel keels, peach-shaped columns for guardrails, sinks, rolling doors, bridges, etc.

 

Standard	ASTM, AISI, DIN, GB, EN, JIS etc
Grade	SGCC, DC51D, DX51D, DX52D, SGCD, SGHC, DX54D, S350GD, S450GD, S550GD etc
Thickness	0.12mm-4.0mm or 0.8mm/1.0mm/1.2mm/1.5mm/2.0mm,etc
Width	As costomized
Zinc Coating	Z30g-Z275g /m2, or as clients required
Spangle	Zero spangle, regular spangle or big spangle
Hardness	Soft or hardness, as clients required.
Surface treatment	Chromated and oiled, chromated and non-oiled, Anti-finger
Packing	Waterproof paper+plastic film+iron packing+bundling or as per customers request.
Coil Weight	3-5MT or as per requirement.
Application	Corrugated steel sheet,Ceiling channel,industrial refrigeration,cold storage,door panel,sandwich panel,PU panel,writing board,PCM steel plate
Brand	Tangsteel, HY, Ansteel, Tisco and other for thin size.
Payment	T/T, L/C at sight.
Delivery Time	In 15-30 days after receipt advance or LC
Min order	25 Mt (one 20ft FCL)

 

Surface treatment of galvanized coils
1. Passivation C
2. Oil O
3. Lacquer seal L
4. Phosphating P
5. Do not process U

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.
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.

Detailed Photos

Why do galvanized coils cause white rust and black rust?

The causes of white rust and black spots are as follows: black spots are formed by further oxidation of white rust.
The main causes of white rust are:
(1) Poor passivation, insufficient or uneven passivation film thickness;
(2) The surface is not oiled or there is residual moisture on the strip surface;
(3) The surface of the strip steel contains moisture during coiling;
(4) The passivation is not completely dried;
(5) Damp or rain during transportation or storage;
(6) The storage time of finished products is too long;
(7) The galvanized sheet is in contact with or stored together with other corrosive media such as acid and alkali.

The finished product is allowed to be stored in the warehouse for up to three months to avoid oxidation caused by long-term storage. Therefore, in order to ensure the quality of use and prolong the service life of galvanizing, we should avoid the above factors that cause rust.

Hot-Dipped galvanized steel strips greatly resist corrosion and rust, combine utility and beauty. The zinc coating is firmly bonded to the base metal, and the coating of hot dipped galvanized steel strips are often thicker than electro galvanized steel. They are more suitable for heavy duty applications and outdoor exposure.

Application

Quality Testing

1.Packing :3 layers of packaging, kraft paper inside, water plastic film in the middle, the outermost GI steel plate tied with steel belt or as required.
2.Shipping port: Tianjin/Shanghai/Qingdao
3.Shipment:
a. Length: ≤6m, loaded in 20GP Container.
b. Length: ≤12m, loaded in 40GP Container.
Remark: Size of 20GP Container (inside :5898*2352*2393mm)
Size of 40GP Container (inside:12032*2352*2393mm)
Size of 40HQ Container (inside:12032*2352*2698mm)
4.Delivery time: Within 7-15 days, depending on the situation

About us

Jinan Zunkai Group founded in 2002, with five branch companies and is wel-funded. Ourannual sales nearly one billion, about 300,000 tons steel. Our company is located in JinarCity, Shandong Province. We entered into a strategic partnership with Bao Steel, LaiwuSteel, Rizhao Steel, Handan Steel, Anyang Steel, Maanshan Steel and other domesticlarge steel companies. Zunkai is the largest steel agent in Shandong Province, we alsohave ourselves steel process factory with 100000 Square meter for steel laser cutting.surface treatment and other further processing , and our stock always more than 20.000tons.Zunkai Group mainly engaged in : PPGl ,galvanized steel , steel plate , round bar.steel pipe ,Stainless steel product ,angle bar, steel pile ,H beam ,l beam, angle, Channelflat steel etc . Our good quality and reliable service will be your best trusted partner.Sincerely wish to building long and regular business with you forever!

Features of hot-dipped galvanized steel strips

• High strength.
• Good formability without deformation.
• Anti-high temperature.
• Corrosion and rust resistance.
• Enhanced resistance to staining.
• Easy to transport.
• Durable and long service life.

Certifications

Our Partner

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FAQ

 

 1. Who are we?

We are based in Shandong, China, start from 2016,sell to South America(20.00%),Africa(20.00%),Southeast Asia(15.00%),Central America(10.00%),North America(5.00%),Oceania(5.00%),Mid East(5.00%),Eastern Asia(5.00%),Western Europe(5.00%),South Asia(5.00%),Domestic Market(5.00%). There are total about 11-50 people in our office.

2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.What can you buy from us?
Galvanized Steel,Corrugated Roofing Sheet,Galvanized Coil,PPGI,Steel Plate,Steel Stainless

4. Why should you buy from us not from other suppliers?
Jinan Zunkai Group founded in 2002, with five branch companies and is well-funded. Mainly engaged in : PPGI ,galvanized steel , steel plate , round bar, steel pipe ,Stainless steel product ,angle bar, steel pile ,H beam ,I beam, angle, Channel flat steel

5. What services can we provide?
Accepted Delivery Terms: FOB, CFR, CIF, EXW, FCA;
Accepted Payment Currency:USD, EUR, JPY, HKD, CHF;
Accepted Payment Type: T/T, L/C, MoneyGram, Credit Card, PayPal, Western Union, Cash