high quality square steel bar

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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 cut?: To use a steel square to determine the angle of a cut, you need to follow a few simple steps. First, ensure that your steel square is clean and free from any debris or dirt. Place the base of the square firmly against the edge of the material you want to cut, ensuring that it is aligned properly. Then, use the markings on the square to find the desired angle. The most common angle measurements on a steel square are 45 degrees and 90 degrees, but some squares may have additional markings for other angles. Once you have identified the angle, draw a line along the edge of the square using a pencil or marker. This line will serve as a guide for your cut. Finally, using a saw or other cutting tool, carefully follow the marked line to make your cut at the desired angle. It is important to maintain steady control and ensure the saw is properly aligned with the marked line to achieve an accurate cut.

Q: Can a steel square be used for beam layout and construction?: For beam layout and construction purposes, a steel square proves to be quite useful. Known by various names such as framing square or carpenter's square, this versatile tool is commonly employed in the fields of carpentry and construction. It comprises of a lengthy, straight edge and a comparatively shorter, perpendicular edge that creates a perfect right angle. When it comes to beam layout and construction, a steel square enables marking and measuring of angles and lengths, ensuring precise placement of beams. It assists in determining the appropriate cutting angles for beams and guarantees proper alignment and levelness during the construction process. Furthermore, a steel square serves the purpose of checking for squareness, ensuring that the corners of the beams are at accurate 90-degree angles. This aspect holds great significance in terms of structural integrity and stability. In conclusion, a steel square offers immense value for beam layout and construction due to its ability to deliver accuracy, versatility, and user-friendliness.

Q: Can a steel square be used for checking the squareness of corners?: Yes, a steel square can be used for checking the squareness of corners.

Q: How do you use a steel square to measure and mark angles?: To use a steel square to measure and mark angles, you can follow these steps: 1. Familiarize yourself with the different parts of a steel square. It typically consists of two arms that meet at a right angle, forming an L-shape. Each arm includes a face and an edge. 2. Identify the angle you want to measure. Let's say you want to measure a 45-degree angle. 3. Position the longer arm of the steel square against the edge of the material or surface you want to mark. Ensure that the shorter arm is facing towards the direction you want to measure the angle. 4. Align the edge of the shorter arm with the starting point of the angle you want to measure. Make sure the edge is flush with the material or surface. 5. Look at the scale or graduations on the face of the longer arm. Find the marking that corresponds to the desired angle, in this case, 45 degrees. 6. Once you have identified the correct marking, use a pencil or scribe to make a small mark on the material or surface along the edge of the shorter arm. 7. Now, rotate the steel square while keeping the longer arm firmly against the edge of the material or surface. 8. Continue rotating until the edge of the shorter arm aligns with the desired endpoint of the angle you want to measure. 9. Look at the scale or graduations on the face of the longer arm again and find the marking that aligns with the endpoint of your angle. 10. Mark the material or surface at this point using a pencil or scribe. 11. Finally, draw a straight line connecting the two marked points to create the desired angle. Remember, accuracy is key when using a steel square to measure and mark angles. Take your time and ensure that the square remains securely in position throughout the process.

Q: How do you use a steel square for marking and cutting half-blind dovetail joints?: To use a steel square for marking and cutting half-blind dovetail joints, follow these steps: 1. Start by selecting a steel square that has a precise 90-degree angle. This tool will help ensure accurate markings and cuts for your half-blind dovetail joints. 2. Begin by marking the thickness of your dovetail joint on the end grain of the tail board and the face of the pin board. This can be done by holding the steel square against the end grain of the tail board and drawing a line along the inside of the square. Repeat this step on the face of the pin board. 3. Next, you will need to mark the depth of the dovetail joint on both the tail and pin boards. Hold the steel square against the end grain of the tail board and align the blade of the square with the marked thickness line. Draw a line along the blade of the square to mark the depth. Repeat this step on the pin board. 4. Once the thickness and depth lines are marked, position the steel square against the face of the tail board. Align the blade of the square with the marked thickness line on the pin board. This will create a reference line for the shoulder of the dovetail joint. 5. Use a marking knife or a pencil to trace along the blade of the steel square, marking the shoulder line on the face of the tail board. Repeat this step on the face of the pin board. 6. Now, you can mark the angled sides of the dovetail joint. Hold the steel square against the face of the tail board, aligning the blade with the shoulder line. Draw a line along the blade, creating the angle line for the dovetail. Repeat this step on the pin board. 7. With the lines marked, you can now proceed to cut the half-blind dovetail joints using a dovetail saw or a similar cutting tool. Follow the marked lines carefully to ensure accurate and precise cuts. By using a steel square to mark and cut half-blind dovetail joints, you can achieve well-fitted joints that contribute to the strength and aesthetics of your woodworking project. Remember to measure accurately and make precise cuts for the best results.

Q: What are the different uses of a steel square in metalworking?: A steel square, commonly known as a framing square or a carpenter's square, is a versatile tool that finds various applications in metalworking. Here are some of the different uses of a steel square in metalworking: 1. Measuring and marking: One of the primary uses of a steel square is to measure and mark straight lines, angles, and right angles accurately. The square's long arm, known as the blade, can be used to measure the length or width of a metal piece, while the shorter arm, called the tongue, can be used to mark lines or angles on the metal surface. 2. Checking squareness: A steel square is an essential tool for checking the squareness or perpendicularity of metal components. By placing the square's tongue against a flat surface and aligning the blade with the edge of another metal piece, you can determine if the angle is precisely 90 degrees. This ensures that metal pieces fit together accurately during fabrication or assembly. 3. Layout and layout marking: Steel squares are commonly used for layout work in metalworking. They help in transferring measurements and dimensions from plans or templates onto the metal surface. By using the square's blade and tongue, you can precisely mark lines, angles, notches, and holes on the metal piece, ensuring accurate fabrication. 4. Cutting and sawing: Steel squares can be used as a guide for cutting or sawing metal pieces. By aligning the square's blade with the desired cut line and holding it firmly against the metal surface, you can guide the cutting tool (such as a hacksaw or circular saw) along the square, ensuring a straight and accurate cut. 5. Checking flatness: Steel squares can assist in checking the flatness of metal surfaces. By placing the square's blade or tongue against the metal surface and observing any gaps or inconsistencies, you can identify areas that need to be flattened or leveled. 6. Angle layout and marking: Steel squares have markings and graduations along their blade and tongue, allowing for precise angle layout and marking. By aligning the square with the desired angle measurement and marking the corresponding point on the metal, you can create accurate angled cuts or joints. Overall, a steel square is an indispensable tool in metalworking, aiding in measuring, marking, checking squareness, layout work, cutting, and ensuring accuracy and precision throughout the fabrication process.

Q: How do you use a steel square to determine the angle of a compound cove cut?: To determine the angle of a compound cove cut using a steel square, adhere to the following instructions: 1. Prioritize the cleanliness and good condition of your steel square, ensuring that all necessary markings and measurements are easily visible. 2. Firmly position the steel square against the desired piece of wood or material for the compound cove cut. Align the longer side of the square with the bottom edge of the material. 3. Adjust the square's placement so that the shorter side stands perpendicular to the longer side and aligns with the material's side edge. 4. Once the square is appropriately positioned, utilize a pencil or marking tool to trace along the inside edge of the longer side, creating a straight line on the material. 5. Proceed to rotate the square along the material's bottom edge, maintaining alignment with the side edge. This rotation will form a second straight line on the material, intersecting the initial line you drew. 6. The point where these two lines intersect denotes the compound cove cut angle. To measure this angle accurately, employ a protractor or the angle measuring function of your steel square. 7. Align the protractor or angle measuring feature with the two lines, ensuring it rests precisely on the intersection point. Consult the protractor or steel square for the angle measurement, which will provide the precise angle of the compound cove cut. By adhering to these steps and utilizing a steel square correctly, you can accurately determine the angle for a compound cove cut on your material. Remember to double-check your measurements and ensure proper alignment of the square to achieve precise results.

Q: How do you use a steel square to measure and mark 157.5-degree angles?: To use a steel square to measure and mark a 157.5-degree angle, you can follow these steps: 1. Start by aligning the short side of the steel square with the edge of the material or surface you want to mark the angle on. 2. Rotate the square until the long side is aligned with one of the reference points or edges on the material. The reference point could be a corner or an existing line. 3. Next, locate the 45-degree angle on the steel square. This is usually marked with a small notch or line. 4. From the 45-degree angle, count another 45 degrees in the same direction. This will give you a 90-degree angle. 5. From the 90-degree angle, count another 45 degrees in the same direction. This will give you a 135-degree angle. 6. Finally, count another 22.5 degrees in the same direction from the 135-degree angle. This will bring you to a total of 157.5 degrees. 7. With the steel square in position, make a small mark or draw a line to indicate the desired 157.5-degree angle. It is important to note that steel squares typically have limited degree markings, often up to 45 degrees or 90 degrees. To measure angles beyond these limits, you have to use multiple angles or rely on other measuring tools, such as a protractor or bevel gauge.

Q: Can a steel square be used for checking the squareness of a wall?: Yes, a steel square can be used for checking the squareness of a wall. Its right angles and straight edges can help determine if the wall is perfectly perpendicular and square.

Q: Can a steel square be used for measuring heights or depths?: No, a steel square is not typically used for measuring heights or depths. A steel square is a versatile tool used primarily in woodworking and carpentry for marking and measuring angles and as a guide for making straight cuts. It consists of a long arm and a shorter arm that meet at a 90-degree angle. While it can be used to measure distances and lay out lines, it is not designed to accurately measure heights or depths. For measuring heights or depths, specialized tools such as tape measures, rulers, or calipers are more suitable.

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