Q235B steel flat for construction with good

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Product Description:

Spring Steel can be divided into two types. One is carbon spring steel, and other one is alloy spring steel.

Alloy spring steel is based on carbon spring steel, by adding one or more alloying elements to improve the mechanical properties, hardenability and other properties to meet the requirement for manufacturing all kinds of spring steel.

 

Specification of Flat Spring Steel:

-Material: 55Si2Mn

-Production: Hot rolled or cold rolled

-Standard: GB/T 1222-1984

-Type: Spring Steel

-Alloy or no: Alloy

 

Chemical Composition:

C

Si

Mn

S

0.52~0.6

1.500~2.00

0.60~0.90

≤0.035

P

Cr

Ni

Cu

≤0.035

≤0.35

≤0.35

≤0.25

 

Mechanical Properties:

-Tensile Strength σb (MPa): ≥1274(130)

-Yield Strength σs (MPa): ≥1176(120)

-Elongation δ10(%): ≥6

-Percentage reduction of area: ψ (%): ≥30

-Hardness:

1, Hot rolled, ≤302HB

2, Cold drawn + Heat treatment: ≤321HB

 

Usage/Applications of Flat Spring Steel:

-Elements Si and Mn improve elasticity strength, hardenability, and the ratio of yield point and tensile strength. but the decarburization tendency is a little large,

-55Si2Mn Spring Steel can be used as vibration damper leaf spring and spiral spring of cars and tractors.

-Heat-resisting spring below 250 degrees.

 

Packaging & Delivery of Flat Spring Steel:

-Packing Detail: The products can be packed in bundles by steel wires.

-Marks:

1, Tag marks: the tag marks will be tied up to each bundle of the products. The information is usually including supplier’s logo and name, product name, made in China, products’ specifications, the painted color and other information requested by customers.

2, Color marks: we will paint both ends of the bundles of these products to make sure that they are more evident. It’s will be more convenient for the customers to distinguish them at the destination port.

-Delivery Detail:

1, Delivery time: 30~45 working days after receive buyer’s T.T. or L/C.

2, Delivery status should be written in the contract. (Heat treatment or no)

 

Payment:

-Invoicing on theoretical weight or actual weight as customer’s request.

-FOB, CFR or CIF.

-Regular terms of payment:

1, 30% payment in advance, the remaining balance (70% payment) against the copy of B/L. 100% payment before shipment.

2, 30% payment in advance, the remaining balance (70% L/C) against the copy of B/L. 100% payment before shipment.

3, Negotiable.

Q235B steel flat for construction with good

Q235B steel flat for construction with good

Q235B steel flat for construction with good

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Q:Galvanized flat steel how much is one meter?
The price of galvanized flat steel is about 6200, so the price is 40 * 4 * 0.00785 * 1.06 * 6.2=8.3 yuan per meterGalvanized pipe price is about 6500, DN25:2.57 * 6.5=16.7 yuan / meter, DN32:3.32 * 6.5=21.58 yuan / meterAngle steel price 5000, 4# angle steel: 2.422 * 5=12.1 yuan / meter
Q:How large is the flat steel used for equipotential grounding?
To divide 2 kinds of equipotential, one is the equipotential of the distribution system, and the other is the equipotential of the lightning protection system; two. The latter specification is greater than the former
Q:The distinction between flat steel and steel strip
Flat bar is strip, mostly 30*3, 40*4, 50*5 and so on. Strip: Blue (sometimes called black) is a chemical treatment, the surface to form a dense oxide film, corrosion and decoration;
Q:What is the representation of flat steel?
Flat steel is represented by -B*t. T- thickness; b- width.Flat, refers to the width 12-300mm, thickness 4-60mm, cross section is rectangular in shape and with a blunt edge of steel.
Q:Lightning protection grounding, what is called three surface welding?
The grounding position of the grounding body shall not be less than 3m; when the ground is embedded in the garbage or ash, it should be changed and compacted.The grounding body (line) shall be connected by welding, the welding seam should be full and adequate mechanical strength, no slag, undercut, crack, weld, welding defects such as pores, knocking the net after a drug paper, brush asphalt anticorrosive processing.
Q:Can roof strip be replaced with steel pipe instead of flat steel and round steel? Are there any examples of practical use?
The steel tube seems to be used only as a lightning rod and must be galvanized steel pipe. As for lightning belts... How expensive ah, it does not say, galvanized steel tube bending with large area, not fixed, and each tube about 2m, every 2m connection also can not afford ah. Feel even if there is excess steel pipe, it is better to buy round steel to cost-effective.
Q:The steel, steel and flat steel, round steel bar and what is the difference?
In fact, for the processing of raw materials are the same, is used when the roller rolling pressure is not the same, there are many different types of tooth roller shaft, can produce different steel, the steel section is square, round cross section is round...
Q:Friction coefficient of steel pipe and flat steel on roller table!
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:How is three grade steel connected to ground flat steel?
Welding method, the steel bar placed in flat iron plane, welding length is not less than 12 cm, welding is ok.
Q:Connect the equipotential terminal box to the ground flat iron. Can I use plain flat steel?
Connect the equipotential terminal box to the ground flat iron and cannot use plain flat steel. What level of ground steel must be used in AC electrical grounding standards, and must be hot-dip galvanized flat steel, the first is corrosion protection, and the second is long acting. Whether or not galvanized is always corroded, all national standards, industry standards, local standards are required to use hot-dip galvanized flat steel. And, depending on where it was buried, the size of flat steel was decided.

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