0.3% De Chemial Element Cr For Steel Square Bar

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
10000 m.t./month
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Product Description

There are two types of Square Bar, one is hot rolled square bar and other one is cold drawn square bar. Our principal products is hot rolled square bar. We dedicate to products with material Q195 and Q235. We offer products with high quality and low price.

 

Specifications

-Standard: GB,

-Grade: Q195/Q235 or equivalent.

-Chemical Composition:

Standard

Grade

Element (%)

C

Mn

S

P

Si

GB

Q195

0.06~0.12

0.25~0.50

≤0.050

≤0.045

≤0.30

GB

Q235B

0.12~0.20

0.30~0.70

≤0.045

≤0.045

≤0.30

-Mechanical Properties:

Mechanical Properties

Grade

Steel diametermm

≤16

16~40

40~60

60~100

Yield Point Δs/MPa

Q195

≥195

≥185

-

-

Q235

235

225

215

205

Tensile Strength

Q195

315~390

Q235

375~500

Elongation δ5%

Q195

≥33

≥32

-

-

Q235

26

25

24

23

 

Measures (Big measures):

(Section of Hot-rolled Square Steel Bar)

-Length of a side and Theoretical weight of Square Bar (Big measures).

Length of a side(mm)

Theoretical weight(kg/m)

Length of a side(mm)

Theoretical weight(kg/m)

53

22.05

80

50.24

56

24.61

85

56.72

60

28.26

90

63.59

63

31.16

95

70.85

70

38.49

100

78.50

75

44.16

Notes:

1, The theoretical weights in the list, base on the density of 7.85 g/cm3.

2, Formula for theoretical weight of Square bar: a(length of a side) * a * 0.00785

3, The numbers with mean that they are not regular or we don’t offer them.

-Regular length of Square Bar:

Steel

Length of a side (mm)

Length of steel (m)

Normal steel

< 25

4~10

> 25

3~9

Steel of high quality

All measure

2~6

Tool steel >75

1~6

 

Usage/Applications

-The Square Steel is normally used as structure steel.

-Row material for other structure steel like steel angles, channels, I-beams, H-beams, etc…

-Row material for steel pipes.

 

Packaging & Delivery

-Packing Detail:

1, The products can be packed in bundles by steel wires.

2, The weight of each bundle no exceed normally 3 tons.

-Marks: We make tag marks and color marks for each bundle. The tag marks with white background and red company log will be tied up to each bundle. The information is usually including basic information of company and products like product name, specification, etc...and other information required by customers. As for color marks, we will paint both ends of each bundles to make sure that it will be more convenient for customers to distinguish theme from other products.

-Delivery Detail: 30~45 working days after receive buyer’s T.T. or L/C.

 

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.

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

3, Negotiable.

-The payment terms will be written in contraction detailed.

 

Q:
A steel square in sheet metal work serves various purposes. Firstly, it enables the measurement and marking of angles. By aligning the square's edge with the desired angle, one can accurately mark the sheet metal for cutting or bending. The square's markings, such as those for 45-degree or 90-degree angles, aid in achieving precise measurements. Secondly, the steel square is crucial for checking squareness. It ensures the perfect perpendicularity of corners or edges of the sheet metal. By aligning the square's edge against a corner and observing the alignment of the other edge, one can determine if the sheet metal is square or if adjustments are necessary. Moreover, the steel square allows for the measurement of sheet metal thickness. Placing the square against the metal edge permits the reading of the measurement scale on the square, providing information on the thickness. This data is essential for selecting the appropriate tools for cutting or shaping the sheet metal, such as shears or punches. Furthermore, the steel square is valuable for marking straight and parallel lines on sheet metal. By using the square's edge as a guide, one can draw precise lines that are parallel to an existing edge or at a specific distance from it. This precision is particularly significant in sheet metal fabrication, where accuracy is vital for the final product. In conclusion, the steel square is a versatile tool in sheet metal work, enabling measurements of angles, checking squareness, measuring thickness, and marking straight and parallel lines. Its accuracy and reliability make it an indispensable instrument in achieving precise and high-quality sheet metal projects.
Q:
To determine the length of a retaining wall using a steel square, you can place the square against the base of the wall and align one of its edges with the bottom of the wall. Then, you can extend the other edge of the square along the top of the wall until it reaches the end. By measuring this distance, you can determine the length of the retaining wall.
Q:
To use a steel square to measure and mark 120-degree angles, you need to align the 60-degree angle on the square with one of the sides of the angle you want to measure. Then, mark a point where the other side of the angle intersects the steel square. Finally, use a straight edge to connect this point with the vertex of the angle, creating a 120-degree angle.
Q:
No, a steel square is not suitable for checking the levelness of a table saw top. A precision level or a straight edge is more appropriate for this task as they provide better accuracy and ensure the table saw top is level.
Q:
A steel square, often referred to as a combination square, is a versatile tool commonly used in metalworking for various purposes. Here are some of its common uses: 1. Measuring and marking: Steel squares are primarily used for measuring and marking precise angles and dimensions on metal surfaces. They have a built-in 90-degree angle that allows for accurate right-angle measurements, ensuring precise cuts and welds. 2. Layout work: Metalworkers use steel squares extensively for layout work, which involves marking reference lines, centerlines, and other dimensions on metal pieces. The square's straight edges and precise measurements make it an ideal tool for ensuring accuracy in layout work. 3. Checking squareness: Steel squares are used to check the squareness or perpendicularity of metal components. By placing the square against a flat surface and checking if the edges align perfectly, metalworkers can determine if the material is square or needs adjustments. 4. Setting up machinery: Metalworking equipment, such as milling machines, lathes, and drill presses, often require precise alignment. Steel squares are used to ensure the proper positioning of these machines, making sure they are set up at a perfect right angle to the workpiece. 5. Checking flatness: When working with flat metal surfaces, it is crucial to ensure they are perfectly level and flat. Steel squares are used to check the flatness of metal sheets, plates, or workbenches by placing the square's edge against the surface and observing any gaps or deviations. 6. Marking angles: Steel squares often have additional features like protractors or adjustable heads that allow for marking and measuring various angles. This is particularly useful when working with metal components that require specific angled cuts or bends. 7. Guiding cuts and welding: Metalworkers use steel squares to guide saws, plasma cutters, or other cutting tools along straight lines. By aligning the square's edge with the desired cut line, metalworkers can ensure precise and accurate cuts. Similarly, they can also use the square to guide welds, ensuring straight and even weld lines. Overall, a steel square is an indispensable tool in metalworking due to its accuracy, versatility, and reliability. It enables metalworkers to achieve precision in measurements, layout work, and various metal fabrication tasks, ensuring high-quality end products.
Q:
No, a steel square cannot be used for measuring the thickness of plastic as it is designed for measuring angles and ensuring squareness, not for measuring thickness.
Q:
Carpenters, woodworkers, and builders rely on a versatile tool called a steel square to ensure precision and accuracy in their woodworking and construction projects. Made primarily of steel, this tool comprises a long blade with a ruler marked along one edge, as well as a shorter perpendicular blade affixed to one end of the long blade. Its design allows for accurate measurements, angles, and straight lines. The steel square finds application in various tasks such as measuring and marking right angles, laying out stair stringers, checking for squareness, and determining angles for miter cuts. Without a doubt, the steel square stands as an indispensable instrument for these professionals, providing them with the means to execute their work with utmost precision and accuracy.
Q:
To measure and mark a 101.25-degree angle using a steel square, you would typically start by aligning one edge of the square against the reference line or surface. Then, rotate the square until the desired angle (101.25 degrees) aligns with the other edge of the square. Once the square is properly positioned, you can use a pencil or scribe to mark the angle on the material.
Q:
No, a steel square cannot be used for checking the plumbness of posts. A steel square is primarily used for measuring and marking right angles in carpentry and woodworking projects. It is not specifically designed to determine if a post is perfectly vertical or plumb. To check the plumbness of posts, a level or plumb bob would be more appropriate tools. A level is a straight edge with a bubble vial that indicates when an object is perfectly vertical or horizontal. A plumb bob, on the other hand, is a weighted object attached to a string, which can be used to create a vertical reference line. Both of these tools are better suited for accurately assessing the plumbness of posts.
Q:
Steel squares are generally very accurate in measuring angles. They are known for their precision and stability, making them reliable tools for ensuring accurate measurements. However, it is important to keep in mind that the accuracy of steel squares can vary depending on the quality of the square and the skill of the user.

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