High Quality GB Standard Steel Square Bar 63mm-80mm

High Quality GB Standard Steel Square Bar 63mm-80mm System 1

High Quality GB Standard Steel Square Bar 63mm-80mm

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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 lay out a pyramid shape?: To use a steel square to lay out a pyramid shape, you need to follow a few steps. First, make sure you have a steel square, which is a triangular measuring tool with different angles marked on each side. Start by determining the desired base length of your pyramid. Let's say you want a base of 10 feet. 1. Begin by setting the steel square on a flat surface, with the long side facing you. This long side is called the blade. 2. Measure and mark a point 10 feet away from the bottom corner of the blade, which will serve as the base length. 3. Now, measure and mark a point 10 feet along the blade, starting from the base length mark you just made. This will be the height of your pyramid. 4. To find the center point of the base, measure and mark halfway between the two base length marks. 5. Connect the center point with each of the base length marks using a straightedge or ruler. This will form the base of your pyramid. 6. Next, connect the center point with the top point you marked for the height, creating the sides of your pyramid. 7. Repeat steps 1-6 on the other side of the steel square to complete the pyramid shape. By using the steel square, you can ensure that all angles and measurements are accurate, allowing you to lay out a pyramid shape with precision.

Q: How do you use a steel square to determine the length of a stair tread?: To use a steel square to determine the length of a stair tread, you would first need to measure the rise and run of the stairs. The rise refers to the vertical height between two consecutive steps, while the run is the horizontal distance from the front to the back of a step. Once you have these measurements, you can use the steel square to calculate the length of the stair tread. A steel square is a versatile measuring tool that consists of a long metal blade and a shorter perpendicular blade, forming the shape of a "L." To determine the length of the stair tread, follow these steps: 1. Position the steel square on the edge of the step, with the long blade along the rise and the shorter blade along the run. 2. Ensure that the blades of the steel square are perfectly aligned with the edge of the step. 3. Use a pencil or marker to mark the point where the long blade intersects the front edge of the step. 4. Repeat the process for each step, ensuring the steel square is aligned correctly each time. 5. Measure the distance between the marked points on each step. This measurement represents the length of the stair tread. It is important to note that the steel square provides an accurate measurement, but it is always advisable to double-check your calculations and measurements to ensure accuracy. Additionally, it is recommended to consult building codes or regulations specific to your area to ensure compliance with any requirements regarding stair tread lengths.

Q: What are the different techniques for using a steel square in metal fabrication?: There are several techniques for using a steel square in metal fabrication. Some common techniques include measuring and marking angles, checking for squareness, and laying out or transferring measurements accurately. The steel square can be used to measure and mark precise angles by aligning it with the workpiece and drawing lines accordingly. It can also be used to check for squareness by comparing the perpendicularity of different edges or corners. Additionally, the steel square is useful for laying out or transferring measurements accurately by using its straight edges and right angles as reference points. Overall, the steel square is a versatile tool that aids in achieving accuracy and precision in metal fabrication processes.

Q: How do you use a steel square to measure board diagonals at different angles?: In order to measure board diagonals at various angles using a steel square, it is necessary to follow these instructions: 1. Prioritize cleanliness and ensure that the steel square is free from dirt or debris that may affect its accuracy. 2. Position the steel square on the board, aligning one of its edges with the board's edge. 3. Confirm that the square is securely placed and does not move or shift during the measurement procedure. 4. Determine the diagonal line that requires measurement. Depending on the angle of interest, this could be a 45-degree angle or any other specific angle. 5. Align the angle or measurement mark on the square with the board's edge, ensuring that it is perpendicular to the edge. 6. Extend the measurement from the marked angle across the board until it reaches the opposite edge. 7. Take note of the measurement or mark the endpoint of the diagonal line for future reference. 8. Repeat the above steps to measure any other diagonals or angles desired. It is crucial to maintain precision in your measurements and ensure that the steel square remains firmly in place throughout the process. By following these steps, you can effectively utilize a steel square to measure board diagonals at various angles.

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: What is a steel square?: A steel square is a versatile measuring and layout tool used in carpentry and woodworking. It consists of a flat metal blade with different measurements and angles marked on each side. Its main purpose is to ensure accurate right angles and precise measurements during various construction tasks.

Q: What are the common accessories that come with a steel square?: Common accessories that typically come with a steel square include a scribe tool, a layout tool, and a protractor. The scribe tool, often in the form of a sharp point or a small blade, is used to mark lines and measurements on surfaces. It is an essential accessory for accurate and precise marking. A layout tool, such as a try square or a miter square, is used to ensure perpendicular and accurate angles when marking or cutting materials. These tools help in aligning edges and corners to create precise right angles. A protractor, often found on larger steel squares, is used to measure and mark angles other than 90 degrees. It is particularly useful in tasks that require bevel cuts or when creating irregular shapes. Other potential accessories that might come with a steel square include a level vial, which helps in determining whether a surface is level, and a center finder, which aids in locating the center of a circle or a cylindrical object. The specific accessories that come with a steel square may vary depending on the brand and model, but these are some of the common ones you can expect to find.

Q: What are some common applications of a steel square in metalworking?: A steel square, also known as a framing square or a carpenter's square, is a versatile tool that finds numerous applications in metalworking. Some common uses of a steel square in metalworking include: 1. Measuring and marking: Steel squares are used for measuring and marking straight lines, angles, and dimensions on metal sheets or bars. They provide precise measurements and ensure accurate cuts or bends. 2. Squaring: Steel squares are essential for ensuring the accuracy of right angles. They can be used to check if two edges of a metal piece are perpendicular to each other or to create 90-degree angles when fabricating metal structures. 3. Laying out patterns: Steel squares are often used to lay out patterns on metal surfaces. By utilizing the various scales and markings on the square, metalworkers can create complex patterns or templates for cutting or bending metal. 4. Guiding cuts: Steel squares can be used as guides for making straight cuts with tools like saws or shears. By aligning the square with the cutting line, metalworkers can ensure a straight and accurate cut. 5. Checking flatness: Steel squares can be used to check the flatness of a metal surface. By placing the square against the metal and observing if there are any gaps or light passing through, metalworkers can determine if the surface is flat or needs further adjustments. 6. Marking angles: Steel squares come with angle markings that allow metalworkers to measure or mark specific angles accurately. This is particularly useful for creating precise bevels or chamfers on metal edges. 7. Layout and framing: Steel squares are commonly used for layout and framing purposes in metalworking. They help metalworkers plan and construct frameworks, ensuring that all corners and joints are properly aligned. 8. Aligning and assembling: Steel squares can be used to align and assemble metal components. By utilizing the square's straight edge, metalworkers can ensure that parts are joined accurately and securely. Overall, a steel square is a fundamental tool in metalworking that assists with measuring, marking, squaring, cutting, and aligning metal pieces. Its versatility and precision make it an essential tool for both professional metalworkers and DIY enthusiasts.

Q: What are some common techniques for using a steel square in guitar making?: Using a steel square in guitar making can be very helpful for ensuring accuracy and precision in various aspects of the construction process. Here are some common techniques for using a steel square in guitar making: 1. Checking the squareness of the neck pocket: Before attaching the neck to the guitar body, it is crucial to ensure that the neck pocket is perfectly square. Place the steel square against the sides of the neck pocket and check if it forms a perfect 90-degree angle. This will help ensure proper alignment and a secure fit between the neck and body. 2. Checking the alignment of the fretboard: The steel square can be used to check the alignment of the fretboard in relation to the guitar body. Place the square against the edge of the fretboard and check if it aligns perfectly parallel to the centerline of the guitar body. This will help ensure proper intonation and playability of the instrument. 3. Setting up the bridge position: The steel square can be used to accurately position the bridge on the guitar body. Measure and mark the desired distance from the nut to the bridge using a ruler or measuring tape. Then, use the square to ensure that the bridge is positioned perpendicular to the centerline of the guitar body, ensuring proper string alignment and intonation. 4. Checking the angle of the headstock: The steel square can be used to check the angle of the headstock in relation to the neck. By placing the square against the back of the neck and extending it towards the headstock, you can check if the headstock angle is consistent and aligned with the neck. This is important for proper string tension and tuning stability. 5. Checking the straightness of the fretboard: A steel square can also be used to check the straightness of the fretboard. Lay the square along the length of the fretboard, and if there are any gaps between the square and the fretboard, it indicates that the fretboard is not perfectly straight. This can help identify any potential issues with the neck relief or fret leveling. Overall, a steel square is a versatile tool that can help ensure accuracy and precision in various stages of guitar making. By using these techniques, you can enhance the quality and playability of the instrument you are building.

Q: Can a steel square be used for measuring the depth of a well?: No, a steel square cannot be used for measuring the depth of a well. A steel square, also known as a try square or a framing square, is a tool typically used in carpentry and woodworking to measure and mark right angles. It consists of a long steel blade with a handle at one end, forming an "L" shape. Measuring the depth of a well requires a different type of tool known as a well depth indicator or well sounder. This tool usually consists of a long, narrow metal tape or cable with markings indicating depth. It is specifically designed to measure the depth of water in a well or borehole. Using a steel square to measure the depth of a well would not provide accurate or reliable results. It is essential to use the appropriate tools designed specifically for well depth measurement to ensure accurate readings and proper well management.

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