Hot Rolled Square Steel Bars 6mm-150mm System 1

Hot Rolled Square Steel Bars 6mm-150mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: 100000 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 of Hot-rolled Square Steel Bar:

-Standard: GB,

-Grade: Q195/Q235 or equivalent.

-Chemical Composition:

Standard	Grade	Element (%)
Standard	Grade	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 diameter（mm）
Mechanical Properties	Grade	≤16	16~40	40~60	60~100
Yield Point Δs/MPa	Q195	≥195	≥185	-	-
Yield Point Δs/MPa	Q235	235	225	215	205
Tensile Strength	Q195	315~390
Tensile Strength	Q235	375~500
Elongation δ5%	Q195	≥33	≥32	-	-
Elongation δ5%	Q235	26	25	24	23

Measures of Hot-rolled Square Steel Bar (Big measures):

Section of Square Bar.

(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
Normal steel	> 25	3~9
Steel of high quality	All measure	2~6
Steel of high quality	Tool steel >75	1~6

Usage/Applications of Hot-rolled Square Steel Bar:

-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 of Hot-rolled Square Steel Bar:

-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 detailedly.

Photos of Hot-rolled Square Steel Bar:

Square Bar.

We sincerely welcome partners around the world to establish business cooperation with us on the basis of mutual trust, benefit and development.

Q:Can a steel square be used for marking out mortises?: Yes, a steel square can be used for marking out mortises. A steel square is a versatile and commonly used tool in woodworking, and it can be used for a variety of layout and marking tasks. When marking out mortises, a steel square can be used to ensure straight and accurate lines by aligning one edge of the square with the edge of the workpiece, and then using the other edge to mark the desired location of the mortise. The square can also be used to check the perpendicularity and squareness of the mortise, ensuring that it is accurately aligned with the adjacent pieces of wood. Overall, a steel square is a reliable and effective tool for marking out mortises, providing precision and accuracy in woodworking projects.

Q:How do you use a steel square for marking stair handrail height?: To use a steel square for marking stair handrail height, first, position the square against the vertical post or newel at the base of the stairs. Ensure that the square's short leg is aligned with the top of the post, while the long leg extends upward, representing the desired handrail height. Use a pencil to mark along the long leg of the square onto the post. Repeat this process on the opposite post to ensure accuracy and consistency. Finally, connect the marks with a straight edge or level, providing a clear guideline for installing the handrail at the appropriate height.

Q:Can a steel square be used for laying out a garden bed?: Indeed, the utilization of a steel square is viable for the establishment of a garden bed. This multifunctional instrument is capable of measuring and delineating right angles, a crucial aspect in establishing accurate and linear garden bed boundaries. Regardless of whether you intend to construct a rectangular or square garden bed, the application of a steel square can guarantee precise alignment of the corners. Furthermore, the straight edge of the steel square can serve as a reliable reference for producing straight lines and edges within your garden bed. In conclusion, the utilization of a steel square facilitates the creation of orderly and symmetrical garden beds.

Q:Can a steel square be used for masonry work?: No, a steel square is not typically used for masonry work. Masonry work requires specialized tools such as trowels, levels, and masonry hammers, which are better suited for the specific tasks involved in working with bricks, stones, or concrete blocks.

Q:Can a steel square be used for checking the levelness of a wall stud?: Checking the levelness of a wall stud cannot be done with a steel square. The steel square, or framing square, is mainly used for measuring and marking angles in carpentry and woodworking. It consists of a long arm and a shorter square arm at a 90-degree angle. To accurately check the levelness of a wall stud, the appropriate tool to use is a level. A level is a rectangular device with a straight edge and a bubble vial filled with liquid. When the bubble is centered between the lines in the vial, it indicates that the surface is level. Using a steel square for this purpose would yield inaccurate results. It is best to utilize a level, as it is specifically designed for this task and provides more precise measurements.

Q:Can a steel square be used for woodworking?: Yes, a steel square can definitely be used for woodworking. While traditional woodworking squares are typically made of wood or aluminum, a steel square is also a reliable and accurate tool for measuring and checking angles in woodworking projects. Steel squares are known for their durability and precision, making them suitable for various woodworking tasks such as marking and verifying right angles, checking the squareness of joints, or ensuring accurate measurements. They are also resistant to wear and tear, providing longevity and reliability in a woodworking workshop. Therefore, while a steel square may not be the most traditional choice, it can certainly be an effective tool for woodworking projects.

Q:What are some common uses of a steel square in metal fabrication?: A steel square, also known as a framing square or carpenter's square, is a versatile tool that has numerous uses in metal fabrication. Here are some common uses: 1. Measuring and marking: A steel square is used to measure and mark straight lines accurately. It has a long blade and a shorter tongue that meet at a 90-degree angle, allowing precise measurements and marking of right angles. 2. Checking squareness: In metal fabrication, it is crucial to ensure that corners and joints are perfectly square to ensure structural integrity. A steel square can be used to check the squareness of components, ensuring they are aligned correctly before welding or fastening. 3. Layout work: A steel square is often used in layout work, where precise measurements and marking are necessary. It helps in marking out angles, notches, or other specific dimensions on metal pieces, ensuring accuracy and consistency. 4. Cutting and sawing: When cutting metal sheets or bars, a steel square can be used to guide the saw or cutting tool, ensuring straight and accurate cuts. It acts as a guide, allowing fabricators to maintain straight lines and angles during cutting operations. 5. Checking flatness: A steel square can also be used to check the flatness of metal surfaces. By placing the square against a surface, fabricators can identify any deviations or irregularities, ensuring the metal is flat and suitable for further fabrication processes. 6. Checking diagonals: When fabricating structures such as frames or supports, it is essential to check their squareness by measuring the diagonals. A steel square simplifies this process, allowing fabricators to measure the diagonals accurately, ensuring the structure is properly aligned. 7. Making accurate 45-degree cuts: A steel square typically has a 45-degree angle marked on its blade, allowing fabricators to make precise 45-degree cuts on metal pieces. This is particularly useful when creating mitre joints or other angled cuts. In summary, a steel square is an indispensable tool in metal fabrication that helps with measurement, marking, layout work, checking squareness, guiding cutting operations, and ensuring flatness. Its versatility and accuracy make it a staple tool for metal fabricators.

Q:How do you use a steel square for marking window and door trim angles?: To use a steel square for marking window and door trim angles, first, place the square against the edge of the trim. Then, adjust the square until one side aligns with the trim edge and the other side is perpendicular to it. Next, use a pencil to mark along the edge of the square, creating a straight line that indicates the desired trim angle. Repeat this process for each corner or angle that needs to be marked.

Q:How do you use a steel square to measure and mark angles?: To use a steel square to measure and mark angles, you can follow these steps: 1. Familiarize yourself with the different parts of a steel square. It typically consists of two arms that meet at a right angle, forming an L-shape. Each arm includes a face and an edge. 2. Identify the angle you want to measure. Let's say you want to measure a 45-degree angle. 3. Position the longer arm of the steel square against the edge of the material or surface you want to mark. Ensure that the shorter arm is facing towards the direction you want to measure the angle. 4. Align the edge of the shorter arm with the starting point of the angle you want to measure. Make sure the edge is flush with the material or surface. 5. Look at the scale or graduations on the face of the longer arm. Find the marking that corresponds to the desired angle, in this case, 45 degrees. 6. Once you have identified the correct marking, use a pencil or scribe to make a small mark on the material or surface along the edge of the shorter arm. 7. Now, rotate the steel square while keeping the longer arm firmly against the edge of the material or surface. 8. Continue rotating until the edge of the shorter arm aligns with the desired endpoint of the angle you want to measure. 9. Look at the scale or graduations on the face of the longer arm again and find the marking that aligns with the endpoint of your angle. 10. Mark the material or surface at this point using a pencil or scribe. 11. Finally, draw a straight line connecting the two marked points to create the desired angle. Remember, accuracy is key when using a steel square to measure and mark angles. Take your time and ensure that the square remains securely in position throughout the process.

Q:Can a steel square be used for setting up a lathe?: No, a steel square is not typically used for setting up a lathe. Lathe setup requires specific tools and measurements such as dial indicators, calipers, and alignment devices.

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