5mm to 100mm round steel bar for construction

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25000 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Specifications of Steel Round Bar:

1. Standard: GB

2. Grade: Q345

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

4. Shape: Round bar, solid bar of steel with circular section

5. Technique: Hot rolled

Packaging & Delivery of Steel Round Bar:

Packaging Detail: Standard seaworthy packing or as customer required; all goods are packed in bundle with steel strips and shipped by break bulk vessel or container

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF or as customer required

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request.

Documents given: Full set (3/3) of original clean on board bill of lading; Original signed commercial invoice, in 3 originals and 3 copies; Original packing list in 3 originals and 3 copies; Policy of insurance; Certificate of origin and what the target market needs.

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: -

5mm to 100mm round steel bar for construction

5mm to 100mm round steel bar for construction

5mm to 100mm round steel bar for construction

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Q:Three - grade thread Phi 10 steel can replace a grade Phi 12 round bar? Which elder knows, trouble pointing.
Notes on reinforcement replacement1, steel replacement, to understand the design intent, the important components of the steel replacement, with the consent of the design unit (the actual: to change the design units should be agreed).2, steel replacement, should meet the minimum reinforcement ratio requirements and reinforcement structure (such as minimum steel reinforcement diameter, spacing, root number, anchorage length, etc.) provisions. The bar as possible with the original design of root number.3, crack resistance requirements of the components (such as crane beam, truss bottom chord, etc.) with smooth steel (not reinforced grade) instead of rebar.4, do not change the effective height of the component.
Q:How is the copper wire and galvanized round steel connected during the construction of the lightning protection device?
Generally, the lightning protection devices of buildings are divided into two major categories: external lightning protection devices and internal lightning protection devices. The external lightning protection device consists of a lightning receiver, a lead off line and a grounding device, namely the traditional lightning protection device. Internal lightning protection device is mainly used to reduce the lightning current inside the building and electromagnetic effects, such as the use of electromagnetic shielding, equipotential connection and installation of surge protection device (SPD) and other measures to prevent the harm caused by lightning electromagnetic pulse.
Q:Are steel and round steel the same thing?
Round steel is a solid strip of steel whose cross section is round. Its specifications are expressed in diameter, in units of millimeters (mm), such as "50mm", which means a diameter of 50 millimeters of round steel.
Q:How many positive and negative tolerances are allowed for round steel GB?
Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Among them, 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets
Q:What are the scientific names of round bar and screw steel?
Round steel and thread steel are just popular terms for steel reinforcement in construction. In the construction, steel by HPB235, belonging to the carbon steel, steel is Q235; steel by HRBxxx, the steel is the most commonly used HRB335 and HRB400, they are called hot rolled alloy steel, cold steel lines, is heat treated in a bar.
Q:Why do I use the M25 round bar for the embedded bolt M24?
Such as using 24 of the round steel, worried about the surface quality of steel when the processing can not be nominal diameter 24 of the standard thread, of course, the election is too large and wasteful, so generally choose 25 of the round bar,
Q:Grade 1 steel is round steel, grade two steel is ribbed thread steel. Are the weight of the two units the same?
Grade two steel is ribbed steel, but the average diameter is calculated. The chemical composition of grade steel and grade two steel is different, but the density of them is the same. Therefore, the unit weight of grade 1 steel and grade two steel is the same.
Q:What kind of steel bars are used in general civil buildings?
In the general construction of commonly used hot rolled round bar (commonly known as round steel), hot rolled ribbed steel bars (commonly known as steel), the two most widely used steel. Identified as HPB235, the diameter of 6.5, 8, 10, 12, and then rough is not commonly used, and in the 6.5 and 8 most as commonly used, used as column, main reinforcement and stirrups and plate reinforced beam distribution.Steel is the HRB335, the diameter of 12 to 22, 25, 28, even 32, and then rough generally appear in the mass concrete construction, not commonly used, generally below 25 is commonly used in masonry structure in rural low level below 16 is most commonly used. Used as beams, columns, main bars and stand bars, etc.
Q:Lightning protection earthing zinc plating flat iron and round steel welding method, need to flat iron wrapped in round steel outside welding?
Don't need, but the welding seam area not less than round or flat between the relatively small cross section, the weld to coated with anticorrosive paint. Generally speaking, the grounding part does not use steel, galvanized L type flat iron good effect (copper strip and galvanized L type flat iron is not much, just life is long, but the cost is much higher), round only used as grid wiring.
Q:Special steel bar steel products used to do what
Carbon tool steel is high carbon steel basically contains alloy elements, the carbon content in the range of 0.65% ~ 1.35%, the production of low cost, easy to obtain raw materials, good machinability, after treatment can obtain high hardness and high wear resistance, so it is widely used in steel, used to manufacture all kinds of cutting tools, mold, measuring.

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