high quality square steel bar

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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:Can a steel square be used for marking angles?: Certainly! A steel square is capable of serving as a tool for marking angles. Known by a few names such as framing square or carpenter's square, this versatile tool proves useful in various carpentry and trade tasks. Its main function revolves around measuring and marking right angles, but it is also capable of marking angles that are not 90 degrees. By utilizing the diverse markings and measurements present on the square, one can accurately mark angles on a piece of work. Moreover, the square's steel construction guarantees durability and stability, establishing it as a trustworthy tool for marking angles.

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 measuring and marking out stairs?: Yes, a steel square can be used for measuring and marking out stairs. A steel square, also known as a framing square or carpenter's square, is a versatile tool used by carpenters and other tradesmen for various tasks, including measuring, marking, and checking right angles. When it comes to stairs, a steel square can be used to ensure the accuracy of measurements and angles, helping to create precise and properly aligned staircases. Its straight edges and perpendicular sides make it ideal for measuring the rise and run of each step, ensuring that they are consistent and level. Additionally, the inside corner of the square can be used to mark out the stringers, which are the inclined supports that hold the steps in place. Overall, a steel square is a reliable and efficient tool for measuring and marking out stairs.

Q:Can a steel square be used for marking out sliding dovetail joints?: Marking out sliding dovetail joints is possible with a steel square. This versatile woodworking tool is capable of various tasks, including joint marking. To ensure the cuts are perpendicular and the joint is aligned correctly, the square proves useful. Its straight edge can mark the lines for the dovetail cuts, while the 90-degree angle can verify joint accuracy during fitting. Nonetheless, it is essential to consider the potential assistance of other specialized tools like dovetail marking gauges or sliding bevel gauges for achieving utmost precision and accuracy in sliding dovetail joints.

Q:How do you use a steel square to create bevel cuts?: To use a steel square for bevel cuts, first, mark the desired angle on the square's blade. Then, position the square on the workpiece, aligning the blade with the marked angle. Next, hold the square firmly in place and use a saw or a similar cutting tool to make the bevel cut along the edge of the square. Finally, ensure smooth and precise cuts by following the marked line while carefully guiding the tool.

Q:How do you use a steel square for marking roof eave angles?: To achieve accurate markings for roof eave angles, it is necessary to follow a series of steps when utilizing a steel square: 1. Begin by positioning the steel square in the desired location along the roof eave. Ensure that the longer side of the square is parallel to the eave. 2. Align the lip or heel of the square with the lower edge of the eave. The lip, which possesses a 90-degree angle, serves as the square's shorter side. 3. Firmly hold the square in place, verifying that it remains level and straight. 4. Employ a pencil or marker to trace along the lip or heel of the square, thereby marking the angle on the roof eave. 5. After marking the angle, proceed to measure it using a measuring tape or ruler. Additionally, if necessary, transfer the marked angle onto other materials. 6. Repeat this procedure for any additional roof eave angles that necessitate marking. Utilizing a steel square to mark roof eave angles is a reliable technique that guarantees precise measurements and proper alignment. It is crucial to handle the steel square with caution and ensure its secure placement to achieve accurate markings.

Q:Can a steel square be used for checking the squareness of a router table fence?: Yes, a steel square can be used for checking the squareness of a router table fence. A steel square is a reliable tool for measuring angles and ensuring that two surfaces are perpendicular to each other. To check the squareness of a router table fence, simply place the steel square against the fence and the table surface, making sure it sits flush against both surfaces. If the steel square forms a perfect 90-degree angle with the fence and table, then the fence is square. If there is any gap or the angle is not 90 degrees, adjustments can be made to align the fence properly.

Q:Can a steel square be used for checking the squareness of a miter saw fence?: Yes, a steel square can be used for checking the squareness of a miter saw fence. A steel square is a versatile tool that can be used to ensure accurate and precise angles in various woodworking applications, including checking the squareness of a miter saw fence. By placing the steel square against the saw fence and aligning it with the blade, you can determine if the fence is perfectly perpendicular to the blade or if any adjustments are needed. The straight edges of the steel square provide a reliable reference for checking the squareness of the miter saw fence, ensuring that your cuts will be precise and accurate.

Q:Can a steel square be used for stair railing layout and installation?: Yes, a steel square can be used for stair railing layout and installation. A steel square, also known as a framing square or carpenter's square, is a versatile tool that is commonly used in carpentry and construction projects. It consists of a long arm and a shorter arm that meet at a 90-degree angle, forming a right triangle. When it comes to stair railing layout and installation, a steel square can be used to ensure accurate and precise measurements. It can be used to mark the angles and dimensions needed for cutting the railing components, such as balusters and handrails. The long arm of the steel square can be aligned with the edge of the stair tread or riser to accurately mark the locations for installing the railing posts. Furthermore, a steel square can be used to check for squareness and alignment during the installation process. It can be placed against the railing posts and used to verify that they are perpendicular to the stair treads and risers. This is crucial for ensuring a sturdy and level installation. In summary, a steel square is a valuable tool that can be used for stair railing layout and installation. Its versatility and accuracy make it ideal for marking angles, measuring dimensions, and checking for squareness during the installation process.

Q:Can a steel square be used for measuring heights or depths?: Typically, a steel square is not employed for measuring heights or depths. In the realm of woodworking and carpentry, a steel square serves as a multifunctional instrument primarily utilized for delineating and gauging angles, as well as serving as a reference for crafting precise straight cuts. Comprised of a lengthy arm and a shorter arm, it converges at a 90-degree angle. Although it can be employed for measuring distances and establishing lines, it is not intended for accurately measuring heights or depths. For such purposes, tools specifically designed for measuring, such as tape measures, rulers, or calipers, are more appropriate.

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