Flat Bar Hot Rolled High Quality GB Q235

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
200000 m.t./month

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Product Description:

Product Applications:

Hot Rolled Steel I-Beams are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

 

Product Advantages:

OKorder's Steel I-Beams are durable, strong, and resist corrosion.

 

Main Product Features:

·         Premium quality

·         Prompt delivery & seaworthy packing (30 days after receiving deposit)

·         Corrosion resistance

·         Can be recycled and reused

·         Mill test certification

·         Professional Service

·         Competitive pricing

 

Product Specifications:

Manufacture: Hot rolled

Grade: Q195 – 235

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

Commodity: Mild Steel Flat Bar

Standard: GB;JIS

Material: Q195-235;SS400

Brand name: FLATSPACE

Origin place: China

Thickness: 3mm-30mm

Width:20mm-200mm

Length: Max 12m

Certification: SGS/BV

Chemical composition of Q235

Alloy No

Grade

Element(%)

C

Mn

S

P

Si

 

Q235

 

B

 

0.12—0.20

 

0.3—0.7

 

≤0.045

 

≤0.045

 

≤0.3

 

Physical properties of Q235

Alloy No

Grade

Yielding strength point(Mpa)

Tensile strength (Mpa)

Elongation after fracture(%)

Thickness (mm)

Thickness (mm)

≤16

>16--40

>40--60

>60--100

≤16

>16--40

>40--60

>60--100

 

Q235

 

B

 

235

 

225

 

215

 

205

 

375--500

 

26

 

25

 

24

 

23

 

FAQ:

Q1: How soon can we receive the product after purchase?

A1: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q2: What makes stainless steel stainless?

A2: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

Q3: Can stainless steel rust?

A3: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.

 

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Q:Construction of electrical grounding steel flat buried anti-corrosion requirements, galvanized steel flat welding parts should be done anti-corrosion treatment, not welding parts are also doing anti-corrosion treatment?
The welding part needs to corrosion because in the welding process the heat melted metal surface coating, so this part, other parts such as did not cause damage to the galvanized layer in the construction process, there is no need for antiseptic treatment.
Q:Are there any differences between flat iron and flat steel?
There are many kinds of iron ore, magnetite, hematite, corresponding to the main components of the ore should all know, or in a similar "write reaction equation" with the topic of carbon monoxide reduction of magnetite occurs, will be at a loss what to do. Next should mainly reflect the principle on iron smelting to understand the reducing agent for iron reduction, must pay attention to the test of the formulation of the phenomenon - "red brown powder into black" (which is often the examination content). From here, the principle of blast furnace ironmaking is approximately the same. For some knowledge in actual production, we should understand the basic structure of the blast furnace five furnace two, three import and export ", and each part of the chemical reaction, the slag formation reaction, the need to pay attention to is: the composition of blast furnace gas is a mixture of gases such as carbon monoxide, carbon dioxide and nitrogen, after purification to it is a gas discharge, good fuel.
Q:What is the quota for the flat steel used in the lightning belt -40*4?
Set the lightning protection net, the main material is -40*4 galvanized flat steel, if you are using 12 yuan quota steel, also set the lightning protection network quota, but the material is converted into flats on the line,But now the lightning belt is usually 12 yuan steel,
Q:Lightning protection grounding, what is called three surface welding?
When lap welding is adopted, the welding length is as follows:1, galvanized steel bar is not less than its width of 2 times, three surface welding. When the width of flat steel is different, the length of lap should be wide. Before laying, the flat steel should be adjusted straight, simmer, bend not to die, straight line should not be obvious bending, and should stand upright.2, galvanized round steel welding length of 6 times its diameter, and should be double-sided welding (when the diameter is not the same, the length of overlap in diameter should prevail).3, galvanized round steel and galvanized flat steel connection, its length is round steel diameter of 6 times.4, galvanized flat steel and galvanized steel pipe welding, in order to connect reliable, in addition to contact in itBoth sides of the site shall be welded, and the flat steel itself shall be bent in an arc to be welded with the steel pipe.
Q:Why is it better to use round steel than that of flat steel in lightning protection?
From the cross section, thermal stability as long as meet the discharge current can be, but from the lightning protection downlead selection, selection of round steel in order to prevent the tip discharge, so we generally do not choose flat edges as grounding, buried in the earth round and not flat how much difference, but in the same section of the case, of course, the contact area of flat steel and soil are large, relatively scattered large flow area, the construction is more convenient, in terms of price, we are willing to use flat, as for the problem of anti-corrosion, anti-corrosion paint, zinc can be taken, you know the thickness of galvanized steel pipe is generally not flat, so it really depends on the term for the use of galvanized flat steel is not bad.
Q:The technological process of flat steel
The spring flat steel is made by converter smelting process. Compared with the prior art, the utility model has the following advantages and positive effects:1. refining flat steel with converter, mainly using hot metal as raw material, less harmful elements in molten iron, the quality of flat steel produced is guaranteed.2., because of the high rate of finished products and less power consumption, the cost per ton is lower than that of the electric furnace.3. the molten steel is directly cast into billets, omitting the cogging process and reducing the cost.4., continuous casting billet, fixed rate is high, can ensure flat steel fixed rate, to meet the needs of users.
Q:How large is the flat steel used for equipotential grounding?
According to the GB 50054-2011 3.2.15 6# responses (table 3.2.15), the distribution system of equipotential bonding conductor may be 25mm2 copper; when the 1/2PE line section of not less than the case, must use 25mm2 copper (or the equivalent capacity of aluminum or steel); according to the GB 50057-2010 5.1.2 (table 5.1.2), lightning protection system equipotential bonding conductors with 16mm2 copper, can meet the minimum section of all the connecting parts of the requirements of lightning protection device. Therefore, "lightning protection system equipotential" equipotential bonding conductor specification is greater than "distribution system equipotential" equipotential connection conductor is not necessarily established.
Q:Difference between cold drawn flat steel and flat steel
Flat, refers to the width 12-300mm, thickness 4-60mm, cross section is rectangular in shape and with a blunt edge of steel. Flat steel can be finished steel, or can be used as the blank of welded pipe and thin slab for laminated sheet rolling. Main application: flat steel is used as a material, used for making iron, tools and machinery parts, and used as frame structures and escalators for buildings.
Q:What are the standards for the use of galvanized steel angles and flat steel for grounding?
The top of the grounding body from the ground 0.5 ~ 0.8m, in order to avoid thawing soil, soil resistivity or steel angle as the root number of the ground around the body and decide, generally not less than two, each spacing is 3 ~ 5m
Q:What is flat steel, please?
The contract and other documents will be of stainless steel edge width, edge thick size fill in complete, and main process other matters: Hot + cold drawing + pickling, polishing, annealing, solid solution, stainless steel according to the different needs of structure composed of a variety of stress components, also can make connections between components. Widely used in a variety of architectural and engineering structures, such as beams, bridges, towers, hoisting and conveying machinery, ships, industrial furnace, reaction tower, container rack and warehouse shelves.

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