High Quality GB Standard Steel Square Bar 38mm-45mm

High Quality GB Standard Steel Square Bar 38mm-45mm System 1

High Quality GB Standard Steel Square Bar 38mm-45mm

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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:

We offer Square Steel Bar with grade Q195 / Q235

Specifications of Square Steel Bar:

-Standard: GB,

-Grade: Q195/Q235 or equivalent.

Chemical Composition:

-Chemical Composition. Q195

Standard	Grade	Element (%)
GB	Q195	C	Mn	S	P	Si
GB	Q195	0.06~0.12	0.25~0.50	≤0.050	≤0.045	≤0.30

-Chemical Composition. Q235

Standard	Grade	Element (%)
GB	Q235B	C	Mn	S	P	Si
GB	Q235B	0.12~0.20	0.30~0.70	≤0.045	≤0.045	≤0.30

Measures and Tolerances of Square Steel Bar:

Section of Square Steel Bar.

(The section of Square Steel Bar)

-The length of a side and the theoretical weight of Square Steel.

Length of a side(a, mm)	Theoretical weight(kg/m)	Length of a side(a, mm)	Theoretical weight(kg/m)
6	0.283	32	8.04
7	0.385	＊33	8.55
8	0.502	34	9.07
9	0.636	＊35	9.62
10	0.785	36	10.17
11	0.950	38	11.24
12	1.13	40	12.56
13	1.33	42	13.85
14	1.54	45	15.90
15	1.77	48	18.09
16	2.01	50	19.63
17	2.27	53	22.05
18	2.54	＊55	23.6
19	2.82	56	24.61
20	3.14	＊58	26.4
21	3.46	60	28.26
22	3.80	63	31.16
＊23	4.15	＊65	33.17
24	4.52	＊68	36.3
25	4.91	79	38.49
26	5.30	75	44.16
＊27	5.72	80	50.24
28	6.15	85	56.72
＊29	6.60	90	63.59
30	7.06	95	70.85
＊31	7.54	100	78.50

Notes:

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

2, The numbers with ＊mean that they are not regulars or we don’t offer them.

-The allowed tolerance of Square Steel:

Length of a side(mm)	Allowed Tolerance
Length of a side(mm)	Group1	Group2	Group3
5.5～7	±0.20	±0.30	±0.40
7～20	±0.25	±0.35	±0.40
20～30	±0.30	±0.40	±0.50
30～50	±0.40	±0.50	±0.60
60～80	±0.60	±0.70	±0.80
80～110	±0.90	±1.0	±1.1
110～150	±1.2	±1.3	±1.1
150～190	――	――	±2.0
190～250	――	――	±2.5

Usage/Applications of Steel Square 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…

Packaging & Delivery of Steel Square Bar:

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

Transportation:

-The products can be delivered by bulk vessel or by container. As for container, products with the length of 6m will be loaded in 20’ container, with 9m or 12m, in 40’ container.

-The maximum quantity of loading of container is 25 tons.

-The products usually are transported to the nearest port from the production place.

Q: How do you use a steel square to determine the length of a rafter?: In order to determine the length of a rafter using a steel square, follow these steps: 1. Place the steel square on a flat surface, with the long side (blade) facing towards you and the shorter side (tongue) pointing away from you. 2. Align the square so that the tongue rests against the edge of the rafter board, ensuring it is flush against the edge. 3. Slide the square along the rafter until you reach the desired length. This will be the distance from the roof's peak to the outer edge of the rafter where it will be cut. 4. Once the square is in the correct position, firmly hold it in place by pressing down with one hand. 5. With your other hand, use a pencil or marker to mark the desired length on the rafter board, along the edge of the square. This mark will indicate where the rafter should be cut. 6. Remove the square from the rafter board and double-check the marked length to ensure accuracy. 7. Finally, use a saw or appropriate cutting tool to cut the rafter along the marked line. By utilizing a steel square in this manner, you can accurately and easily determine the length of a rafter. The steel square provides a straight edge and a right angle, making it a valuable tool for carpentry and roofing projects.

Q: How do you use a steel square for marking stair newel post angles?: To use a steel square for marking stair newel post angles, you will need to follow a few steps. First, ensure that you have a steel square, which is a triangular-shaped tool with various measurements marked on its edges. 1. Start by positioning the steel square against the newel post, aligning one edge of the square with the post's surface. Make sure the square is flush against the post and held firmly in place. 2. Next, locate the angle you want to mark on the steel square. The square will have different angle measurements marked on it, such as 45 degrees or 90 degrees. Choose the appropriate angle based on your requirements. 3. Once you have identified the desired angle, take a pencil or marker and trace along the edge of the steel square that corresponds to that angle. This will transfer the angle onto the newel post. 4. Repeat this process for any additional angles you need to mark on the newel post, using the appropriate edges of the steel square. 5. After marking the angles, double-check the accuracy and alignment by using a protractor or other measuring tool. This will help ensure that the newel post is cut and installed correctly. By using a steel square to mark stair newel post angles, you can achieve precise and consistent measurements, resulting in a professional-looking installation. Remember to always double-check your measurements before making any cuts to ensure accuracy.

Q: How do you use a steel square for marking and layout tasks?: A steel square, which is also known as a framing square or carpenter's square, serves as a versatile tool in woodworking and construction for various marking and layout tasks. To effectively utilize a steel square, the following steps must be followed: 1. Get acquainted with the components: Typically, a steel square comprises two arms, namely the blade and the tongue. The blade is longer and features measurements and angles, while the tongue acts as a reference surface. 2. Set up your workpiece: Position the steel square on the surface of your workpiece, making sure it aligns with the desired edges or corners for marking or layout purposes. Secure it firmly to prevent any movement. 3. Mark straight lines: One of the key functions of a steel square is marking straight lines. Align either the blade or the tongue against the edge of your workpiece and use a pencil or marking knife to trace along the marked measurements or angles on the square. 4. Layout angles: Steel squares are also handy for laying out angles. Simply place the square in a manner that the desired angle coincides with the edge of your workpiece. Then, mark along the blade or tongue to transfer the angle accurately. 5. Verify squareness: Another role of a steel square is to verify squareness or right angles. Position the square against a corner or edge and check if it fits snugly. Should there be a gap, it indicates that your workpiece is not square, prompting necessary adjustments. 6. Scribe parallel lines: For marking parallel lines, align the steel square against the edge of your workpiece and create marks along the blade or tongue at the desired distance. Subsequently, repeat the process along the marked points to generate parallel lines. 7. Generate miter cuts: Steel squares are invaluable in producing miter cuts, which involve angled cuts frequently employed in woodworking. By aligning the desired angle on the square with the edge of your workpiece, you can mark and cut precisely. 8. Measure and transfer dimensions: The markings on the steel square facilitate convenient dimension measurement and transfer. Merely align the appropriate markings with your workpiece and mark or measure accordingly. Always ensure the accuracy of your steel square prior to employing it for precise tasks. Confirm that it is square and devoid of any defects or damage that may impact the accuracy of your markings. With practice and careful attention, a steel square can evolve into an indispensable tool for marking and layout tasks in woodworking or construction projects.

Q: Can a steel square be used for checking the squareness of a workbench?: Yes, a steel square can be used for checking the squareness of a workbench. A steel square, also known as a framing square or carpenter's square, is a versatile tool that is commonly used in carpentry and woodworking. It consists of a long arm and a shorter arm that meet at a right angle, forming a 90-degree angle. To check the squareness of a workbench, you can place the long arm of the steel square against one edge of the workbench, ensuring it is flush with the surface. Then, you can extend the shorter arm along the adjacent edge, again making sure it is flush with the surface. By doing this, you can visually inspect if the two edges form a perfect 90-degree angle. If the steel square indicates that the workbench is not square, adjustments can be made to correct it. This can involve planing or sanding the edges to ensure they are straight and at a right angle to each other. Additionally, shims or wedges can be used to level and square the workbench. In conclusion, a steel square is a reliable tool for checking the squareness of a workbench. It allows for accurate measurements and ensures proper alignment of the workbench edges.

Q: How do you use a steel square to measure and mark 11.25-degree angles?: To use a steel square to measure and mark 11.25-degree angles, you can follow these steps: 1. Place the steel square on a flat surface or workpiece, ensuring it is aligned properly. 2. Locate the 45-degree angle on the square. This is usually marked as a right angle. 3. Starting from the 45-degree angle, divide it into four equal parts by using a ruler or a straight edge to measure the distance. 4. Once divided, each part will represent a 11.25-degree angle. 5. Align the straight edge of the square with the desired starting point for the angle and make sure the corner of the square is touching the starting point. 6. Draw a line along the edge of the square to mark the 11.25-degree angle. 7. Repeat this process for any additional angles you need to measure and mark. By using a steel square and dividing the 45-degree angle into four equal parts, you can accurately measure and mark 11.25-degree angles. Remember to always double-check your measurements and ensure the square is properly aligned to get precise results.

Q: Can a steel square be used for electrical work?: Using a steel square for electrical work is not possible. Specialized tools and equipment are necessary for electrical tasks to ensure safety and efficiency in handling electrical circuits and components. Steel squares are commonly utilized in carpentry and construction for measuring angles and straight lines, but they lack the required features and insulation to protect against electrical shocks or accurately measure electrical parameters. To guarantee safety and proper functionality, it is crucial to utilize tools and equipment specifically designed for electrical work.

Q: Can a steel square be used as a level?: No, a steel square cannot be used as a level. While a steel square is a useful tool for measuring angles and checking the accuracy of right angles, it does not have the necessary features to determine whether a surface is level or not. A level typically consists of a long, straight body with a bubble vial filled with liquid and an air bubble. This bubble vial allows for precise measurement of both horizontal and vertical surfaces, ensuring that they are perfectly level. Therefore, if you need to determine if a surface is level, it is recommended to use a proper level tool rather than a steel square.

Q: Are square steel, rectangular tube and angle steel shaped or light steel?: Belongs to the type steel, also belongs to the light steel. The question you ask is equivalent to whether apples, grapes, or bananas belong to fruit or food

Q: How do you use a steel square to mark a line at a specific angle?: To mark a line at a specific angle using a steel square, the following steps can be followed: 1. Determine the desired angle you wish to mark, either by knowing the measurement or calculating it. 2. Locate the blade and the tongue on the steel square. The blade is the longer side, while the tongue is the shorter side. 3. Align the blade parallel to the edge of the material or surface where the line is to be marked, ensuring it is firmly against the edge. 4. Rotate the square around the heel (the point where the blade and tongue intersect) to adjust the position until the desired angle is achieved. 5. Securely hold the square in place and use a pencil or scribe to mark the line along the edge of the blade or tongue. 6. Verify the accuracy of the marked angle by double-checking the measurement with a protractor or digital angle finder. Using a steel square is a precise and practical method for marking lines at specific angles, particularly in woodworking and carpentry. Its rigid and straight edges help maintain accuracy, making it a reliable tool for creating angled lines.

Q: How do you use a steel square to determine the correct angle for a bevel cut?: To determine the correct angle for a bevel cut, one can utilize a steel square and adhere to the following steps: 1. Commence by positioning the steel square on the desired material to be cut, aligning one side of the square with the material's edge. 2. Adjust the square to the preferred angle for the bevel cut. This angle can be determined based on project specifications or personal preference. For instance, if a 45-degree bevel cut is desired, align the 45-degree marking on the square with the material's edge. 3. Once the square is properly set at the desired angle, employ a pencil or marking tool to create a line along the edge of the square. This line will serve as a guiding reference for the bevel cut. 4. After marking the line, remove the square and proceed with executing the bevel cut utilizing a saw or an appropriate cutting tool. It is crucial to accurately follow the marked line to achieve the intended angle for the bevel cut. By utilizing a steel square, one can rely on a trustworthy technique to determine the correct angle for a bevel cut. This method enables precise measurements and ensures accuracy in woodworking or construction projects.

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