High Quality GB Standard Steel Square Bar 21mm-25mm

High Quality GB Standard Steel Square Bar 21mm-25mm System 1

High Quality GB Standard Steel Square Bar 21mm-25mm

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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:

-Standard: GB,

-Grade: Q195 or equivalent.

-Chemical Composition:

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

Measures of HR Square Bar (small measures):

HR Square Bar.

(Section of HR Square Bar)

-Length of a side and Theoretical weight of Square Bar.

Length of a side(mm)	Theoretical weight(kg/m)	Length of a side(mm)	Theoretical weight(kg/m)
7	0.385	22	3.80
8	0.502	24	4.52
9	0.636	25	4.91
10	0.785	26	5.30
11	0.950	28	6.15
12	1.13	30	7.06
13	1.33	32	8.04
14	1.54	34	9.07
15	1.77	36	10.17
16	2.01	38	11.24
17	2.27	40	12.56
18	2.54	42	13.85
19	2.82	45	15.90
20	3.14	48	18.09
21	3.46	50	19.63

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: (length of a side)2 * 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 HR Square Bar:

-The Square Bar is normally used as structure steel.

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

Packaging & Delivery of HR Square Bar:

-Packing Detail: The products can be packed in bundles by steel wires.

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

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

Q: Can a steel square be used for measuring the height of a flagpole?: No, a steel square cannot be used for measuring the height of a flagpole. A steel square, also known as a try square, is a tool used primarily for measuring and marking angles of 90 degrees. It is not designed or equipped to measure vertical distances or heights. To measure the height of a flagpole, one would typically use a measuring tape, a laser distance meter, or some other device specifically designed for measuring vertical distances.

Q: How do you use a steel square for stair layout?: To use a steel square for stair layout, you first need to understand the different components of the square. A steel square typically consists of two arms, a longer one called the blade and a shorter one called the tongue. The blade is usually marked with measurements and angles, while the tongue is used for holding and maneuvering the square. To start, determine the rise and run of your stairs. The rise is the vertical height between one step and the next, while the run is the horizontal distance covered by each step. Measure these dimensions accurately. Next, place the steel square on the edge of the board or stringer that you will be using for the stairs. Align the blade with the vertical edge and the tongue with the horizontal edge. For determining the rise, locate the mark on the blade that corresponds to the rise measurement you obtained. Place the tongue against the edge of the board, making sure it is parallel to the blade. This will give you the correct angle for the rise. To find the run, locate the mark on the blade that corresponds to the run measurement. Again, ensure the tongue is parallel to the blade and align it against the edge of the board. This will give you the correct angle for the run. Using these measurements and angles, you can mark and cut the stringers or boards accordingly. Remember to double-check your measurements and angles before making any cuts to ensure accuracy. Overall, using a steel square for stair layout involves aligning the square with the edges of the board or stringer, and using the marked measurements and angles on the blade and tongue to determine the rise and run of the stairs.

Q: Can a steel square be used for measuring board thickness?: No, a steel square is typically not used for measuring board thickness. It is primarily used for checking angles and making precise measurements in woodworking and carpentry. A more suitable tool for measuring board thickness would be a caliper or a thickness gauge.

Q: Can a steel square be used for checking the straightness of a board?: Yes, a steel square can be used for checking the straightness of a board. A steel square, also known as a framing square or carpenter's square, is a versatile tool commonly used in woodworking and carpentry. It consists of a long arm and a shorter arm set at a 90-degree angle. The long arm can be used to check the straightness of a board by aligning it along the edge of the board and observing if the board is perfectly straight or if there are any gaps or deviations. The right angle of the square can also be used to ensure that the edges of the board are square. However, it is important to note that while a steel square can provide a rough indication of the straightness of a board, it may not be as accurate as more specialized tools such as a straightedge or a level.

Q: How do you use a steel square to mark out parallel lines on curved surfaces?: In order to mark out parallel lines on curved surfaces using a steel square, a few steps must be followed: 1. The appropriate size steel square should be chosen for the project, taking into consideration the scale and curvature of the surface being worked on. 2. By placing the steel square against the curved surface, ensuring that one edge aligns with the desired starting point of the parallel line, the process begins. 3. To mark the first parallel line, a pencil or marker is used to trace along the other edge of the steel square. 4. The steel square is then slid along the curved surface, aligning the marked line with the desired distance for the parallel lines. 5. This process is repeated by tracing along the other edge of the steel square, marking each parallel line at the desired distance. 6. The sliding and marking of the steel square along the curved surface continues until all the necessary parallel lines have been marked. When working with curved surfaces, it is important to note that the parallel lines may not be perfectly straight due to the curvature. However, the use of a steel square will assist in maintaining a consistent distance between the lines, resulting in a visually pleasing and accurate outcome.

Q: What is the difference between a framing square and a steel square?: Carpentry and construction employ both a framing square and a steel square, yet their designs and purposes differ. A framing square, a traditional tool, comprises two arms meeting at a right angle to form an L-shape. Typically crafted from wood, aluminum, or plastic, it measures 24 inches in length for the longer arm, known as the blade, and 16 inches for the shorter arm, called the tongue. Framing squares excel at laying out and measuring right angles, marking and cutting rafters, and assessing squareness in construction and framing endeavors. Contrarily, a steel square, also referred to as a combination square or try square, proves more versatile and precise. Manufactured entirely from steel, it possesses a 12-inch blade alongside a sliding head. This head easily locks into desired angles, enabling the square to measure and mark angles apart from 90 degrees. Steel squares often integrate extra features like levels, scribes, or protractors, rendering them invaluable for an extensive array of layout and measurement tasks. In conclusion, the divergence between a framing square and a steel square lies in their design and functionality. A framing square, a fundamental L-shaped tool, chiefly serves the purpose of measuring and marking right angles in framing and construction projects. Conversely, a steel square, composed wholly of steel and equipped with a sliding head, allows for locking at various angles, making it suitable for a broader range of layout and measurement tasks.

Q: How do you use a steel square to find angles for scribe cuts?: To use a steel square to find angles for scribe cuts, you need to follow a few steps. Firstly, ensure that your steel square is clean and in good condition. This will ensure accurate measurements. Next, place the square against the edge of the material you want to make the scribe cut on, with one side of the square parallel to the edge. Then, adjust the position of the square until the other side of the square aligns with the desired angle for the scribe cut. Once the square is in position, use a pencil or scribe to mark a line along the edge of the square. After marking the line, remove the square and double-check the line you marked to ensure it is straight and accurate. Finally, you can proceed to make the scribe cut along the marked line using a suitable cutting tool. Using a steel square in this way allows you to easily find and transfer angles for scribe cuts, ensuring precise and clean results.

Q: Can a steel square be used for metalworking tasks?: A steel square has multiple applications in metalworking. Engineer's squares or machinist's squares, also referred to as steel squares, are precision tools extensively used in metalworking. These tools are typically made from hardened steel and possess precise right angles, which make them perfect for verifying and marking 90-degree angles in metal fabrication, welding, and machining procedures. Steel squares are frequently employed to ensure accuracy and alignment of metal components during layout, layout marking, scribing, and measuring tasks. Moreover, they can be utilized to examine the flatness and straightness of metal surfaces, as well as to square up workpieces during cutting or milling. Overall, steel squares are essential tools in the field of metalworking, providing valuable assistance in achieving precision and quality in a variety of metal-related tasks.

Q: What are some common uses for a steel square in picture framing?: The steel square, also referred to as a framing square or carpenter's square, serves as a versatile tool in the realm of picture framing. Its applications encompass a range of functions, including: 1. Measurement and marking: With precise measurements etched onto its surface, the steel square enables framers to accurately measure and mark the dimensions of picture frames. This proves particularly beneficial in guaranteeing the squareness of the frame and the alignment of its corners. 2. Angle verification: Boasting a 90-degree angle, the steel square proves instrumental in assessing the squareness of corners and ensuring proper frame alignment. Framers can position the square against the frame's corners to verify if they possess perfect squareness or necessitate adjustments. 3. Miter cutting: When crafting mitered corners for picture frames, the steel square can be employed to delineate and guide the cuts. By placing the square against the frame's edge, framers can draw a straight cutting line at the desired angle, thereby ensuring precise and accurate mitered corners. 4. Center determination: Frequently, framers must pinpoint the center point of a frame to ensure optimal placement of artwork or mounting hardware. The steel square can facilitate this process by marking the center through diagonal alignment of the square's edges across the frame, resulting in an intersection at the center point. 5. Mat board alignment: Mat boards serve as a common component in picture framing, enhancing the aesthetic and safeguarding the artwork. The steel square can assist in aligning the mat boards by positioning the square against the edges, guaranteeing their perpendicularity to one another. 6. Hardware alignment: The installation of various hardware components, such as D-rings, wire, or hooks, often proves necessary for hanging picture frames. The steel square can ensure the proper alignment and even spacing of these hardware pieces, culminating in a balanced and well-hung frame. All in all, the steel square constitutes an invaluable tool for picture framers, facilitating precise measurements, square corners, accurate cuts, and proper alignment of frames and mat boards.

Q: Can a steel square be used for drywall taping?: Yes, a steel square can be used for drywall taping. While there are specific tools designed specifically for drywall taping, such as a drywall taping knife or a trowel, a steel square can still be effective in certain situations. A steel square can be used to measure and mark straight lines, which is important when cutting drywall sheets or marking the placement of joint tape. It can also be used as a straight edge to ensure clean, straight lines when applying joint compound or smoothing out the tape. However, it is important to note that a steel square may not be as versatile or efficient as tools specifically designed for drywall taping, so it may not be the best option for professional drywallers or large-scale projects.

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