High Quality GB Standard Steel Square Bar 16mm-20mm

High Quality GB Standard Steel Square Bar 16mm-20mm System 1

High Quality GB Standard Steel Square Bar 16mm-20mm

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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 roof pitches?: One can utilize a steel square for the measurement of roof pitches. Known by several names, including framing square and carpenter's square, a steel square proves to be a versatile tool in the field of carpentry and construction. It serves various purposes, one of which is the measurement and marking of roof pitches. This tool is designed with a 90-degree angle and a shorter 45-degree angle, enabling it to determine the pitch or slope of a roof. By positioning the steel square on the surface of the roof and aligning its edges with the roof rafters or trusses, one can accurately measure and mark the pitch. Moreover, the steel square finds utility in other roof-related tasks such as the cutting of rafters and the layout of angles for roof framing.

Q: How do you use a steel square to lay out a irregular shape with curved sides?: Achieving an accurate layout for an irregular shape with curved sides using a steel square requires following these steps: 1. Precisely analyze the irregular shape and identify the necessary key points and angles for accurate construction. This step is crucial in ensuring precise layout. 2. Place the steel square on a surface, ensuring that the longer side (known as the blade) is perpendicular to the surface, and the square lies flat. 3. Align one edge of the steel square, preferably the shorter side (known as the tongue), with one of the key points or angles of the irregular shape. Maintain the perpendicular position of the blade. 4. Trace the curved side of the irregular shape along the edge of the tongue, ensuring that the blade remains steady and perpendicular as you progress. 5. Continuously trace the curved sides of the irregular shape, adjusting the position of the steel square as necessary to maintain accuracy and achieve a smooth layout. 6. To guarantee precision, take multiple measurements and double-check your work. This becomes particularly important when dealing with irregular shapes and curved sides. 7. If needed, employ additional tools like a compass or flexible curve ruler to assist in accurately tracing the curved sides of the irregular shape. These tools offer greater flexibility and precision when working with curves. Remember, using a steel square for laying out an irregular shape with curved sides can be intricate. Take your time, measure carefully, and make adjustments as necessary to achieve an accurate layout.

Q: How do you use a steel square to mark out parallel lines on curved surfaces?: To use a steel square to mark out parallel lines on curved surfaces, you will need to follow a few steps: 1. Choose the appropriate size steel square for your project. The size of the steel square will depend on the scale and curvature of the surface you are working with. 2. Place the steel square against the curved surface, ensuring that one edge of the square aligns with the desired starting point of the parallel line. 3. Use a pencil or marker to trace along the other edge of the steel square, marking the first parallel line. 4. Slide the steel square along the curved surface, aligning the marked line with the desired distance for the parallel lines. 5. Repeat the process of tracing along the other edge of the steel square, marking each parallel line at the desired distance. 6. Continue sliding and marking the steel square along the curved surface until you have marked out all the parallel lines you need. It's important to note that when working with curved surfaces, the parallel lines may not be perfectly straight due to the curvature. However, using a steel square will help you maintain a consistent distance between the lines, creating a visually pleasing and accurate result.

Q: Can a steel square be used for precision measuring?: Yes, a steel square can be used for precision measuring. A steel square, also known as a combination square, is a versatile measuring tool that is commonly used in woodworking and metalworking. It consists of a steel blade and a steel head, which can be adjusted and locked at various angles to accurately measure and mark materials. Steel squares are designed to be accurate and reliable, with clear markings and precise measurements. They can be used for a variety of measurements, such as determining right angles, measuring and marking 45-degree angles, checking the flatness of surfaces, and transferring measurements. The steel construction ensures durability and stability, making it suitable for precise measurements over extended periods of time. However, it is important to note that while steel squares can provide precise measurements, they have their limitations. They may not be suitable for measuring extremely small dimensions or for highly sensitive measurements that require specialized tools. In such cases, more precise measuring instruments, such as micrometers or calipers, may be required. Nonetheless, for most general precision measuring tasks, a steel square can be a reliable and accurate tool.

Q: How do you use a steel square to determine the angle of a rabbet cut?: In order to determine the angle of a rabbet cut using a steel square, there are a few straightforward steps that need to be followed. To begin, position the steel square against the edge of the rabbet cut, ensuring that one arm of the square is resting on the surface that you plan to cut. It is important to align the square correctly and firmly against the edge. Following this, utilize a pencil or scribe to draw a line along the other arm of the square. This line represents the desired cutting angle. Afterwards, measure the angle you have just marked by employing a protractor or angle finder. Simply place the protractor or angle finder against the line and read the measurement. Subsequently, you can transfer this angle to your saw by aligning the saw blade with the marked line on the steel square. Before making the cut, it is crucial to securely fasten the material you are working with. By utilizing a steel square to ascertain the angle of a rabbet cut, you can guarantee accuracy and precision in your woodworking endeavors.

Q: How do you use a steel square to measure and mark 213.75-degree angles?: To use a steel square to measure and mark a 213.75-degree angle, you would first align the long edge of the square with the baseline or reference line. Then, locate the 90-degree angle on the square and mark it. Next, rotate the square to align the marked 90-degree angle with the reference line and find the 45-degree angle on the square. Mark it as well. Finally, rotate the square to align the 45-degree angle with the reference line and find the 1.25-degree angle on the square. Mark it to accurately measure and mark a 213.75-degree angle.

Q: How do you use a steel square for marking and cutting finger joints?: Achieving accurate and professional-looking results in your woodworking projects can be done by following these steps and utilizing a steel square for marking and cutting finger joints: 1. Begin by ensuring that your steel square is clean and free of any rust or debris, as this will aid in obtaining precise measurements and markings. 2. Measure and mark the desired length and width of each finger joint on the workpiece. Utilize a ruler or measuring tape to make exact measurements and transfer them onto the workpiece using the steel square. The length can be marked using the long side of the steel square, while the width can be marked using the shorter side. 3. Align the steel square with the edge of the workpiece, ensuring that it is perfectly square and flush. Secure the square in place by either using a clamp or holding it firmly against the workpiece. 4. Trace along the edges of the steel square onto the workpiece using a pencil or marking knife. This will create clear and precise guidelines for cutting the finger joints. 5. Repeat the marking process for each finger joint, ensuring that the measurements and alignments remain consistent throughout. 6. Once all the finger joints have been marked, proceed to cut along the marked lines using a saw or chisel. Take your time and work diligently to guarantee clean and accurate cuts. 7. Test the fit of the finger joints by joining the pieces together. If necessary, make any necessary adjustments or refinements to the joints using a file or sandpaper. By adhering to these steps and employing a steel square for marking and cutting finger joints, you can achieve precise and professional-looking results in your woodworking endeavors.

Q: How do you care for and maintain a steel square?: To care for and maintain a steel square, there are a few important steps to follow. Firstly, it is crucial to keep the steel square clean and free from any debris or dirt. After each use, wipe it down with a clean cloth to remove any dust or grime. This will prevent any buildup and ensure the square remains in good condition. Secondly, it is essential to protect the steel square from rust. Steel is prone to rusting, especially when exposed to moisture or humidity. To prevent this, make sure to store the square in a dry and well-ventilated area. If the square does get wet, dry it thoroughly before storing it to avoid any moisture lingering on the surface. Additionally, consider applying a thin coat of oil to the steel square. This can be done by using a clean cloth and rubbing a small amount of oil onto the surface. The oil acts as a protective barrier against moisture and helps prevent rust. However, be sure to wipe off any excess oil as leaving it on may attract dust or dirt. Furthermore, it is crucial to check the accuracy of the square regularly. Over time, the square may become misaligned or lose its accuracy. To ensure it remains precise, check the square against a known straight edge or use a squareness tester. If any discrepancies are found, adjustments may be necessary. Most steel squares have adjustment screws or bolts that can be used to correct any misalignment. Lastly, handle the steel square with care. Avoid dropping or mishandling it, as this can cause damage to the square. When not in use, store it in a protective case or wrap it in a soft cloth to prevent any accidental damage. By following these care and maintenance tips, you can ensure that your steel square remains in good condition, accurate, and ready for use whenever you need it.

Q: How do you use a steel square to mark parallel lines?: To use a steel square to mark parallel lines, align one edge of the square with the reference edge of the surface. Then, place a pencil or marking tool against the other edge of the square and slide it along the square's edge to create a straight line. Repeat this process as needed to mark parallel lines.

Q: How do you use a steel square to measure the width of a door jamb?: To use a steel square to measure the width of a door jamb, follow these steps: 1. Ensure you have a steel square that has a long blade and a shorter tongue perpendicular to each other. This is often called a framing square or carpenter's square. 2. Start by holding the steel square against the inside edge of the door jamb, with the long blade touching the floor and the tongue facing towards the door opening. 3. Slide the square until the long blade is flush against one side of the door jamb. Make sure the square is held firmly and remains level. 4. Look at the measurement markings on the long blade of the square. The numbers on the blade represent inches or centimeters. Identify the mark that aligns with the opposite side of the door jamb. This will give you the width measurement of the door jamb. 5. Take note of the measurement and repeat the process on the other side of the door jamb to ensure accuracy. If the door jamb is not perfectly square, take multiple measurements at different points along the jamb to get an average width. By following these steps, you can effectively use a steel square to measure the width of a door jamb. It is important to have a steady hand and ensure the square remains level for accurate measurements.

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