High Quality GB Standard Steel Square Bar 48mm-60mm

High Quality GB Standard Steel Square Bar 48mm-60mm System 1

High Quality GB Standard Steel Square Bar 48mm-60mm

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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 height of a window sill?: To determine the height of a window sill using a steel square, the following steps should be followed: 1. Position the steel square vertically against the window frame, ensuring that one of the legs rests on the window sill. The longer leg of the square should be pointing upwards. 2. Securely hold the square against the frame and align it so that the shorter leg is perfectly vertical. 3. Observe the edge of the shorter leg of the square and identify the point where it aligns with the top of the window sill. 4. Once the point of alignment between the shorter leg and the window sill is identified, mark it using a pencil or any suitable marking tool. 5. Use a tape measure or any measuring tool to measure the distance from the marked point to the bottom of the window sill. 6. The measured distance represents the height of the window sill. By utilizing a steel square in this manner, an accurate measurement of the window sill height can be achieved. It is crucial to maintain a steady grip on the square and ensure proper alignment for precise results.

Q: How do you use a steel square to measure and mark out angled cuts?: In order to measure and mark angled cuts using a steel square, it is necessary to follow a few steps: 1. Make sure that your steel square is clean and free from any dirt or debris, as this will ensure precise measurements. 2. Determine the angle at which you need to make the cut. The steel square typically consists of two arms: a longer one called the blade and a shorter one known as the tongue. The blade is usually labeled with various angles, such as 45 degrees or 90 degrees. 3. Align the blade of the steel square with the edge of the material you are working with. Ensure that this edge is perpendicular to the blade. 4. Once the blade is properly aligned, extend the tongue of the steel square along the material, ensuring that it overlaps the edge at the desired angle. The tongue and the blade should form a straight line. 5. Use a pencil or a sharp object to mark the edge of the material along the tongue of the steel square. This mark will indicate the angle at which the cut needs to be made. 6. Before proceeding with the cut, double-check your measurements and marks to ensure accuracy. It is always advisable to measure twice and cut once. 7. Finally, utilize an appropriate cutting tool, such as a saw or a power tool, to make the angled cut along the marked line. Always exercise caution when working with sharp tools and adhere to proper safety precautions to prevent injuries.

Q: Can a steel square be used for masonry work?: Using a steel square for masonry work is not recommended. Steel squares are typically meant for woodworking purposes, such as measuring angles and marking straight lines. Masonry work, on the other hand, requires specialized tools like a mason's square or a level. These tools are designed specifically for working with heavy materials like bricks or stones, ensuring precise measurements and proper alignment. Opting for a steel square in masonry work can result in inaccurate measurements, incorrect angles, and an overall unsatisfactory outcome. It's always advisable to use the suitable tools for each task to achieve the best result possible.

Q: What are some common measurements that can be taken with a steel square in sheet metal work?: 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: How do you use a steel square to lay out a mortise and tenon joint?: Follow the steps below to accurately lay out a mortise and tenon joint using a steel square: 1. Begin by marking the location of the tenon on the end of the workpiece. The tenon is the protruding part of the joint that will fit into the mortise. 2. Align the steel square with the edge of the workpiece and firmly hold it against the wood. This will guarantee precise measurements. 3. Utilize the blade of the square to mark the width of the tenon on the face of the workpiece. Keep the square square to the face as you slide it along the edge, drawing a line across the width of the tenon. 4. Measure the length of the tenon from the end of the workpiece. Position the square's tongue against the edge, aligning it with the end of the wood. Slide the square along the edge, marking the length of the tenon with a line across its width. 5. Now, proceed to mark the mortise on the corresponding piece of wood. Ensure that the tenoned piece aligns properly with the other workpiece. 6. Transfer the lines marking the tenon to the face of the second workpiece using the square. Align the square's blade with the lines indicating the width and length of the tenon, and draw lines across the width and length to outline the mortise. 7. Finally, use a chisel or a router to remove the material within the outlined lines and create the mortise. Be careful to stay within the lines and ensure that the mortise matches the size and shape of the tenon. Using a steel square to lay out a mortise and tenon joint is a dependable and precise method that guarantees accurate fitting of the joint.

Q: Can a steel square be used for measuring angles other than right angles?: Measuring angles other than right angles is not possible with a steel square. This tool, alternatively called a try square or a carpenter's square, is specifically designed to ensure accurate measurements of right angles. Its construction consists of a metal blade with a handle forming an L-shape at a right angle. The main purpose of a steel square is to verify the squareness of corners, mark right angles, and guarantee precise 90-degree angles in carpentry and other construction work. While it might be feasible to estimate or approximate other angles using a steel square, it cannot be relied upon as a precise or dependable tool for measuring angles that deviate from right angles. To measure angles of varying degrees, it is advisable to employ specialized tools like protractors or angle finders.

Q: How do you use a steel square to lay out a perpendicular line on a curved surface?: To use a steel square to lay out a perpendicular line on a curved surface, you would start by positioning the square on the curved surface with one leg aligned along the desired line. Then, using the other leg of the square as a guide, you can mark points along the curved surface to create a perpendicular line. By connecting these points, you will have a straight line perpendicular to the curve.

Q: How do you use a steel square to mark angles?: Before you can effectively utilize a steel square to designate angles, it is essential to have a grasp of its components. A steel square, which is also referred to as a framing square or carpenter's square, is a versatile tool comprising two primary parts: the body and the tongue. To designate angles, commence by situating the body of the square against one edge of the material you are working with, such as a board or a piece of metal. Confirm that the body is aligned with the edge in a manner that allows it to lie flat against it. Subsequently, extend the tongue of the square along the opposite edge of the material, ensuring it runs parallel to the body. The tongue can be adjusted by loosening the screw that connects it to the body, granting you the ability to slide it into the desired position. Once the square is positioned correctly, you can proceed to mark the angle. To accomplish this, employ a pencil or a scribe to draw a line along the inner edge of the tongue. This line serves as a representation of the angle you are marking. If your intention is to create a right angle, merely align the body and tongue of the square to form a 90-degree angle. Subsequently, draw a line along the inner edge of the tongue to designate the angle. For angles other than a right angle, you have the option to adjust the position of the tongue based on the degrees you wish to mark. Steel squares generally feature degree markings engraved onto the body, facilitating the easy establishment of the desired angle. By employing a steel square, you can ensure the precise marking of angles on various materials, leading to accurate cuts and measurements in your woodworking or metalworking endeavors. It is important to always double-check your measurements and exercise caution when working with sharp tools.

Q: Can a steel square be used for measuring the depth of a trench?: Using a steel square for measuring the depth of a trench is not suitable. A steel square, also referred to as a framing square or carpenter's square, is primarily utilized for measuring angles and making straight cuts in woodworking. It is composed of two steel arms that are joined at a right angle. For measuring the depth of a trench, it is more suitable to employ a different tool such as a measuring tape or a ruler. These tools are specifically designed for linear measurement and can accurately determine the depth of a trench. Furthermore, more precise measurements of trench depths can be achieved by utilizing specialized tools like a trench depth gauge or a laser level.

Q: How do you use a steel square to determine the angle of a compound routing template cut?: In order to determine the angle of a compound routing template cut using a steel square, the following steps should be followed: 1. Prepare the steel square: Before starting, ensure that the steel square is clean and free from any debris or damage. Place it on a flat surface, making sure it is properly aligned. 2. Align the template: Position the compound routing template on top of the steel square, ensuring a snug fit against the square's edges. Align the template in such a way that the desired cut aligns properly with the square's edges. 3. Examine the alignment: Observe the template's alignment against the square's edges. Pay attention to the markings and numbers along the square's edges. These markings represent the angles formed by the square. 4. Determine the angle: By observing where the template aligns with the markings on the square, you can determine the angle of the compound routing template cut. For instance, if the template aligns with the 45-degree marking on the square, then the angle of the cut is 45 degrees. 5. Apply the angle for cutting: Once the angle has been determined using the steel square, transfer that angle to your workpiece or cutting tool. This will serve as a guide to achieve an accurate and precise compound routing template cut. It is important to keep in mind that the accuracy of the angle measurement using a steel square relies on the precision of the square itself. Therefore, it is advisable to use a high-quality steel square and ensure that it is properly calibrated before attempting to use it for angle measurements.

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