Flat Steel Bar

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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 Spring Steel:

-Material: 70Si2CrA

-Production: Hot rolled or cold rolled

-Standard: GB/T·5218-1999

-Type: Spring Steel

-Alloy or no: Alloy

Chemical Composition:

C

Mn

Si

Cr

0.65~0.75

0.40~0.60

1.40~1.70

0.20~0.40

S

P

Ni

≤0.030

≤0.030

≤0.030

Mechanical Properties:

-Annealing Condition:

1, Tensile Strength: σb/MPa≤835

2, Elongation: δ/%≥8

-Quencher condition:

1, Tensile strength: σb/MPa785~1175

2, Elongation: -

Usage/Applications of Spring Steel:

For manufacturing all kinds of flat spring or round spring with small sections, clockwork spring,

Packaging & Delivery of 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.

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Q:The minus sign in front of what 40 galvanized flat steel
Also called hot galvanized and hot dip galvanizing: hot dip galvanizing is an effective way of metal corrosion, mainly used for metal structure on the facilities of the industry. The steel piece after being cleaned is dipped into the molten zinc liquid at about 500 DEG C so that the zinc coating is adhered on the surface of the steel member so as to prevent corrosion.
Q:The total floor distribution along the wall surface 40x4 galvanized flat steel, flat paint is painted yellow mark or brush a straight chute
Mainly to use insulating coatings.
Q:What's the difference between stainless steel flat bar 304 and 316
Stainless steel flat bar is one of the shape steel, 304 stainless steel flat steel, generally divided into hot-rolled flat steel and cold drawn flat steel. The general delivery state of hot-rolled 304 stainless steel flat surface is pickling, cold drawn 304 stainless steel flat surface, general delivery state for wire drawing and polishing.There are many kinds of steel, it is a kind of solid strip steel with definite section shape and size. It is divided into two kinds of simple and complex sections according to their cross section shapes. The former includes round steel, Fang Gang, flat steel, six angles and angle iron. The latter includes rail, I-beam, channel steel, window frame steel and special-shaped steel.
Q:Galvanized flat steel how much is one meter?
Formula of flat steel: width * thickness * 0.00785 (kg/m), zinc coating weight: 1.06Galvanized pipe formula: (outer diameter wall thickness) * wall thickness * 0.02466 * 1.06, DN25 galvanized pipe outer diameter 33.5, GB thickness 3.25, weight: 2.57kg/m, DN32, outer diameter 42.3, wall thickness 3.25, weight: 3.32kg/m. DN stands for nominal caliber.Angle formula (approximate): edge width * thickness * 0.015, 4# angle iron weight 2.422kg/m
Q:Is the laying of a 40X4 flat steel for fire fighting metal trunking?
The cable tray is divided into trough, tray type and ladder format, network structure, and is composed of a bracket, bracket and installation accessories etc.. The building bridge can be set up independently, can also be attached to all kinds of building (structure) of buildings and pipe support, should reflect the characteristics of simple structure, beautiful appearance, flexible configuration and easy maintenance, etc., all parts are to be galvanized, installed in the building outside the open-air Bridge
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:Construction of lightning protection ground galvanized flat steel approach, need to retest test? What's the test?
Forged flat steel is a forged strip of steel with a rectangular cross section. Forging injustice can get certain shape and size and forgings, casting microstructure of the steel is remarkably improved, increase the density of steel; can change the distribution of the fiber structure, clear anisotropy, improve the mechanical properties of the metal, so that the strength and toughness of steel are improved; and it can be used to process the plastic lower high Shuogang and high alloy steel. Forged flat steel is mainly made of high quality alloy steel, mainly used as springs, tools and important mechanical parts.
Q:The difference between use and performance of hot rolled flat steel and longitudinally cut flat steel is discussed
Its manufacturing process determines the poor dimensional accuracy of hot-rolled flat steel.Vertical shearing flat steel (fine shearing flat steel strip):The raw material board is produced by a larger factory, the raw material source is controllable, the material can be basically guaranteed, and the mechanical performance can basically meet the relevant GB standards.The dimension of vertical shear flat steel is relatively high.
Q:-40x4 hot galvanized flat steel, a water 1m, what do you mean?
Water is to protect the wall foundation using cement mortar width not less than 600 of a circle along the walls of the cement ground, if the main part of the project before the electrical engineering, auxiliary grounding length less than in bulk water, auxiliary grounding, ditching to destroy the water, so that the design requirements of 1 meters water is conducive to the construction of welding, may be more than one meter in order to facilitate their work.
Q:What is the difference between steel band and steel ring? Steel strip is flat steel, steel ring is made of steel

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