Square bar 5mm-100mm

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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.

Payment:

-Invoicing on theoretical weight or actual weight a s customer’s request.

-FOB, CFR or CIF.

-Regular terms of payment:

1, 30% payment in advance, the remaining balance (70% payment) against the copy of B/L.

2, 30% payment in advance, the remaining balance (70% L/C) against the copy of B/L.

3, Negotiable.

Q: How do you use a steel square to determine the angle of a compound spindle sanding cut?: To determine the angle of a compound spindle sanding cut using a steel square, follow the following steps: 1. Place the steel square on a flat and level surface, like a workbench or table. 2. Securely position the compound spindle sanding machine next to the steel square, ensuring its stability. 3. Set the desired angle for the cut by adjusting the angle of the compound spindle sanding machine. This can usually be done by loosening a locking mechanism or turning a knob. 4. Once the desired angle is set, press the steel square against the sanding spindle or workpiece, ensuring it is flush against both surfaces. 5. Observe the angle formed between the square and the sanding spindle or workpiece. This angle represents the compound spindle sanding cut angle. 6. Take note of the angle measurement indicated by the steel square. Some steel squares may have angle markings or a protractor scale to aid in accurate measurements. 7. Use the determined angle measurement as a guide for your compound spindle sanding cut. Adjust the angle of the machine or workpiece accordingly to achieve the desired outcome. Remember to prioritize safety at all times when working with power tools and machinery. Ensure the compound spindle sanding machine is securely fastened and wear appropriate safety gear, such as goggles and gloves.

Q: Can a steel square be used for laying out a garden bed?: Indeed, the utilization of a steel square is viable for the establishment of a garden bed. This multifunctional instrument is capable of measuring and delineating right angles, a crucial aspect in establishing accurate and linear garden bed boundaries. Regardless of whether you intend to construct a rectangular or square garden bed, the application of a steel square can guarantee precise alignment of the corners. Furthermore, the straight edge of the steel square can serve as a reliable reference for producing straight lines and edges within your garden bed. In conclusion, the utilization of a steel square facilitates the creation of orderly and symmetrical garden beds.

Q: Can a steel square be used for carpentry tasks?: Yes, a steel square can definitely be used for carpentry tasks. A steel square, also known as a framing square or carpenter's square, is a versatile tool that is commonly used in carpentry. It is made of durable steel and has a 90-degree angle, as well as various other angles and measurements marked on its surface. Carpenters use it for a wide range of tasks such as measuring and marking right angles, checking for squareness, laying out cuts, and creating accurate lines and angles. It is an essential tool in carpentry that provides precision and accuracy, making it highly valuable for both professional carpenters and DIY enthusiasts.

Q: What are some common measurements that can be taken with a steel square in HVAC work?: Some common measurements that can be taken with a steel square in HVAC work include determining right angles, marking straight lines, measuring angles, checking for level and plumb, and creating parallel lines.

Q: Can a steel square be used for checking the squareness of door jambs?: Yes, a steel square can be used for checking the squareness of door jambs. A steel square, also known as a framing square or carpenter's square, is a versatile tool commonly used in construction and woodworking. It consists of two arms that meet at a right angle, allowing for accurate measurements and marking of angles. To check the squareness of a door jamb using a steel square, place the longer arm of the square against one side of the jamb and the shorter arm against the adjacent side. Ensure that both arms are flush against the edges of the jamb. Then, observe if the square aligns perfectly with the jamb. If the jamb is square, the square's edges should run parallel to the sides of the jamb. If the square does not align perfectly with the jamb or there is a gap between the square and the jamb, it indicates that the jamb is not perfectly square. This can cause issues with the door installation, including problems with closing, opening, or latching properly. In such cases, adjustments may be necessary to ensure the jamb is square before proceeding with the door installation. In summary, a steel square can be a reliable tool for checking the squareness of door jambs. It allows for quick and accurate measurements, helping ensure a proper door installation.

Q: What are some common uses for a steel square in metal fabrication?: A steel square, which is also known as a framing square or carpenter's square, is commonly used in metal fabrication for a variety of purposes. In metal fabrication, a steel square has several common uses including: 1. Accuracy in measuring and marking metal pieces is achieved with a steel square. It ensures precise angles and lines, which are crucial in metal fabrication. 2. Perfectly square corners are ensured by using a steel square in metal fabrication. This allows for accurate and seamless welding or joining of metal pieces. 3. Checking for flatness in metal sheets or plates is done using a steel square. It helps identify any warping or bending in the metal surface, allowing for corrections before further processing. 4. Layout work, which involves marking and positioning various components before assembly, benefits from the straight edges and angles of a steel square. It helps accurately transfer measurements and create templates for cutting or shaping metal pieces. 5. Drafting and designing metal structures or components often involve using steel squares. They aid in creating precise drawings, accurate calculations, and ensuring the final product meets required specifications. 6. Steel squares have a protractor scale that allows for measuring and marking various angles. This is beneficial in metal fabrication, where specific angles are required for cutting, bending, or welding metal pieces. 7. During the setup of machinery in metal fabrication workshops, steel squares are useful. They help align and position machines, ensuring they are level and accurately placed for optimal performance. Overall, a steel square is an essential tool in metal fabrication, providing accuracy, precision, and versatility in various tasks such as measuring, marking, squaring corners, checking flatness, layout work, drafting, designing, angle measurements, and machinery setup.

Q: How do you use a steel square to determine the length of a hypotenuse?: To use a steel square to determine the length of a hypotenuse, you would first align one side of the square (usually the longer leg) with the known length of one side of the right triangle. Let's call this side "a". Next, extend the other side of the square (usually the shorter leg) until it intersects with the unknown hypotenuse. Let's call this side "b". Now, measure the distance from the starting point of the known side "a" to the point where the extended side "b" intersects with the hypotenuse. This measurement represents the length of side "b". Finally, using the Pythagorean theorem, which states that the square of the hypotenuse is equal to the sum of the squares of the other two sides (a^2 + b^2 = c^2), you can calculate the length of the hypotenuse "c" by substituting the values of sides "a" and "b" into the equation and solving for "c".

Q: What are some common uses for a steel square in metal fabrication?: A steel square, also known as a framing square or a carpenter's square, is a versatile tool that is commonly used in metal fabrication for a variety of purposes. Some of the common uses for a steel square in metal fabrication include: 1. Measuring and marking: A steel square is an essential tool for accurately measuring and marking metal pieces. It is particularly useful in ensuring precise angles and lines, which are crucial in metal fabrication. 2. Squaring corners: Metal fabrication often requires precise right angles and squared corners. A steel square is used to ensure that corners are perfectly square, allowing for accurate and seamless welding or joining of metal pieces. 3. Checking for flatness: Metal sheets or plates should ideally be flat and level before fabrication. A steel square can be used to check for any warping or bending in the metal surface, helping to identify and correct any imperfections before further processing. 4. Layout work: The tool's straight edges and angles are useful in layout work, which involves marking and positioning various components before assembly. Steel squares help in accurately transferring measurements and creating templates for cutting or shaping metal pieces. 5. Drafting and designing: Steel squares are often used in drafting and designing metal structures or components. They aid in creating precise drawings, making accurate calculations, and ensuring that the final product meets the required specifications. 6. Angle measurements: Steel squares are equipped with a protractor scale that allows for measuring and marking various angles. This feature is beneficial in metal fabrication, where specific angles are required for cutting, bending, or welding metal pieces. 7. Setting up machinery: Steel squares are also useful during the setup of machinery in metal fabrication workshops. They can be used to align and position machines, ensuring that they are level and accurately placed for optimal performance. Overall, a steel square is an indispensable tool in metal fabrication, providing accuracy, precision, and versatility in various tasks such as measuring, marking, squaring corners, checking flatness, layout work, drafting, designing, angle measurements, and machinery setup.

Q: Can a steel square be used for fence post layout?: Fence post layout can be achieved using a steel square. This versatile tool, also referred to as a framing square or carpenter's square, has various applications in carpentry and construction. Its usefulness extends to fence post layout, where it guarantees precision and uniformity. To utilize a steel square for fence post layout, start by determining the desired distance between posts. Mark this measurement on the ground where the fence will be installed. Next, place the steel square at each marked spot, aligning it with the previous line. With the steel square properly positioned, you can establish accurate right angles and ensure that each post stands perfectly perpendicular to the ground. By aligning the steel square with the marked line, it becomes effortless to check the post's straightness and make adjustments if necessary. Moreover, the steel square is ideal for measuring and marking the depth at which the posts need to be buried. By using the square's edges and angles, you can achieve precise measurements, guaranteeing consistency throughout the fence. In conclusion, a steel square proves invaluable in the context of fence post layout. It guarantees precise spacing, right angles, and consistent burial depth for every post, resulting in a well-constructed and aesthetically pleasing fence.

Q: How do you use a steel square to find the slope of a ramp?: To use a steel square to find the slope of a ramp, place one leg of the square on the ramp surface and align the other leg vertically. Then, measure the vertical distance from the ground to the top of the square's vertical leg. This measurement represents the rise of the ramp. Next, measure the horizontal distance from the top of the ramp to the square's horizontal leg. This measurement represents the run of the ramp. Finally, divide the rise by the run and multiply by 100 to obtain the slope as a percentage.

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