Prime quality square alloy steel billet 80mm Q235

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100 m.t.
Supply Capability:
10000 m.t./month

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Structure of Prime quality square alloy steel billet 80mm Q235

 Prime quality square alloy steel billet 80mm Q235

Description of Prime quality square alloy steel billet 80mm Q235 

1. Prepainted steel coil is coated with organic layer, which provides higher anti-corrosion property and a longer lifespan than that of galvanized or galvalume steel sheets. 

2. The base metals for prepainted steel coil consist of cold rolled, HDGI Steel, electro-galvanized and hot-dip alu-zinc coated steel. The finish coats of prepainted steel coil can be classified into groups as follows: polyester, silicon modified polyesters, polyvinylidene fluoride, high-durability polyester, etc.

3. The production process has evolved from one-coating-and-one-baking to double-coating-and-double-baking, and even three-coating-and-three-baking.

4. The color of the prepainted steel coil has a very wide selection, like orange, cream-colored, dark sky blue, sea blue, bright red, brick red, ivory white, porcelain blue, etc.

5. The prepainted steel coils can also be classified into groups by their surface textures, namely regular prepainted sheets, embossed sheets and printed sheets.

 Prime quality square alloy steel billet 80mm Q235


Main Feature of Prime quality square alloy steel billet 80mm Q235

Uncoated CR steel sheet 

With the features of in line with the international highest standards in demension and shape, excellent surface finish and properties, the products are mainly used in home appliance and automobile industries.

Galvanized steel sheet(include HDG and EG)

With the features of good corrosion resistance, the products are mainly used in automobile, home appliance, electronics, building and machinery manufacture industries, etc.

Precoated steel sheet

With the features of enviromental protection and good processablility, long lasting surface durability, rich in colors, the products are maily used in building, home appliance and furniture industries, etc.


Applications of Prime quality square alloy steel billet 80mm Q235

Manufacture anticorrosion, industrial and civil architecture roof boarding, roof grille
Light industries
Home appliance's case, civil chimney, kitchen utensils
Auto industry
Corrosion resistant parts of cars
Food storage, meat and aquatic products' freezing and processing equipment
Equipments to store and transport materials, and packing implements

  Prime quality square alloy steel billet 80mm Q235


Specifications of Prime quality square alloy steel billet 80mm Q235


Prime quality square alloy steel billet 80mm Q235

Material Grade

SGCC / SGCH  / DX51D+AZ, etc






Thickness: +/-0.02mm , Width:+/-2mm




Raw material: Hot rolled steel coil --> Cold rolled_>hot dipped galvalume


Dried, Chromated, Unoiled


Regular spangle , small spangle, zero spangle


508MM 610MM

Coil weight


Export package

Cardboard inner sleeves, Waterproof paper, galvanized steel covered and steel strip packed


FAQ of Prime quality square alloy steel billet 80mm Q235

We have organized several common questions for our clients,may help you sincerely: 

1. How Can I Visit There?
  Our company is located in Tianjin City, China, near Beijing. You can fly to Tianjin Airport Directly. All our clients, from home or aboard, are warmly   welcome to visit us!  
2. How Can I Get Some Sample?
  We are honored to offer you sample.  
3. Why choose CNBM?
  Our delivery time about 15-20days for standard sizes, if you have other requirements like hardness, quanity and width ,it is about 20-40days. But don't worry we also try our best for the delivery time ,because time longer and our cost is higher.


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:What is the billet price in China today?
Building materials tend to be stable, the price is good to pick up the trend, the overall no big changes, specific to my steel network detailed inquiries, information here will be updated every day
Q:If the casting speed is not steady, what will happen to the billet?
The instability of the casting speed leads to the unstable surface of the mould and increases the probability of slag entrapment in the mold.
Q:What is the difference between steel and billet in the process?
Square is a square steel hollow, with iron produced; but it is a square steel billet is generally solid, forging or casting molding.
Q:What is the active carbon. What is the difference with the charcoal?
Activated carbon activated carbon after activation of the solid carbon black porous. A general powder, granular or pellet, carbon as a main component, also containing a small amount of oxygen, hydrogen, nitrogen, sulfur and chlorine. The early production of activated carbon as raw materials for wood, hard shell or animal bone, later used by coal production method a: the steam and gas activation method. The use of water vapor or carbon dioxide at 850 ~ 900 C carbon activation.
Q:Billet prices skyrocketing weekend, Southern China steel prices rose?
So, three month contract period, even transportation during two days, there will be a big money and lose big reversal.
Q:Charcoal classification
Hard charcoal. By hardwood such as Fagaceae Quercus, Castanopsis trees, secondary birch and etc..Broad-leaved charcoal. Charcoal made from a mixture of hard and soft hardwood.Pine charcoal. Carbon fired from pine or other needle wood. In addition to bamboo and bamboo charcoal burning with shells, stones (coconut shell, peach stone charcoal etc.) wood raw material firing. Charcoal collected from household stoves in the cell known as carbon. If the charcoal is crushed and mixed with proper adhesive, and then pressed, formed and roasted, the deposit is made. According to the burning process of silica and carbon black.
Q:How many tons of billets does it take to produce a ton of thread steel?
The yield was increased, consumption will be reduced.
Q:The role of carbon content in steels
Carbon is the main alloying element of iron and steel, so steel is also called iron carbon alloy. The main role of carbon in steel is to:1., the formation of solid solution tissue, improve the strength of steel, such as ferrite and austenitic structure, are dissolved in carbon;
Q:Billet production process
Two is the steel ingot produced by the steelmaking system or the continuous casting billet processed by the rolling equipment of the steel rolling system, and the three is the semi-finished product processed by the forging equipment of the steel ingot produced by the steelmaking system.
Q:How does billet caster pull out billet cracking?
The strict two cooling water distribution system, the degree of purification of the molten steel, and the precise arc are related!

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