High Quality GB Standard Steel Square Bar 26mm-30mm

High Quality GB Standard Steel Square Bar 26mm-30mm System 1

High Quality GB Standard Steel Square Bar 26mm-30mm

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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:

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.

Q:Can a steel square be used for cabinet-making projects?: Cabinet-making projects can indeed utilize a steel square. This versatile tool, known as a framing square or carpenter's square, is commonly employed in woodworking. Its functionality includes verifying 90-degree angles, measuring straight lines, and ensuring precision in cabinet construction. The steel square is both durable and accurate, serving as a dependable resource for measuring and marking lumber, assessing joint squareness, and confirming cabinet component alignment. Nevertheless, it is worth acknowledging the existence of specialized squares designed explicitly for cabinet-making, such as cabinetmaker's squares or combination squares, which may provide added features or benefits tailored to cabinet-making tasks.

Q:What are some common techniques for using a steel square in box making?: To achieve accuracy and precision in box making, it is essential to utilize a steel square. Here are several techniques commonly used with a steel square in this craft: 1. Squareness check: An important function of the steel square is to determine if the corners of the box are perfectly square. To do this, correctly align the steel square against one corner of the box and observe if its edge aligns with the adjacent edges. If they align perfectly, the corner is square. If not, adjustments can be made to achieve squareness. 2. Marking and measuring: A steel square often has markings of measurements and angles on its surface. These markings can be used to measure and mark precise dimensions on the box's material. By aligning the square's edge with the material's edge or corner, accurate measurements can be transferred, ensuring precise cuts and joins. 3. Angle determination: Steel squares often have markings for angles such as 90 degrees, 45 degrees, and 30 degrees. These angles can be used to determine and mark angles required for box construction, such as mitered corners or bevel cuts. Simply align the appropriate angle marking with the material edge to accurately transfer the desired angle. 4. Assembly support: When assembling the box, a steel square can assist in holding the pieces in place while securing them together. By placing the square against the edges or corners, it can act as a support to ensure the proper alignment and squareness of the joined pieces. This is particularly useful when using clamps or fasteners during the assembly process. 5. Flatness check: Apart from squareness, a steel square can also be used to check for flatness. By placing the square's edge against the box's surface, any gaps or irregularities can be identified. This technique helps ensure that the box's sides and top are perfectly flat, resulting in a more professional and aesthetically pleasing finish. By employing these common techniques, a steel square can greatly assist in the box making process, enabling accuracy, squareness, and precision at different stages of construction.

Q:Can a steel square be used for concrete work?: Yes, a steel square can be used for concrete work. A steel square, also known as a framing square or carpenter's square, is a versatile tool used in carpentry and construction. While it is primarily used for measuring and marking right angles, it can also be used for concrete work tasks such as squaring corners, checking for level and plumb, and measuring distances. However, it is important to note that a steel square may not be specifically designed for concrete work and may not have features specific to that task, such as a non-slip surface or resistance to corrosion. Therefore, it is advisable to use a steel square that is in good condition and clean to avoid any potential issues when working with concrete.

Q:Can a steel square be used for checking the alignment of fences?: Yes, a steel square can be used for checking the alignment of fences. A steel square is a versatile tool that can be used for various measurements and alignments. When it comes to checking the alignment of fences, a steel square can help ensure that the fence posts are square to the ground and that the fence panels are properly aligned. By placing the steel square against the posts and panels, one can easily determine if they are straight and aligned correctly. The right angles and straight edges of the steel square make it an effective tool for this purpose.

Q:Can a steel square be used for countertop installation?: Countertop installation can indeed make use of a steel square. A versatile tool often seen in carpentry and woodworking, a steel square is capable of providing precise and accurate measurements for a multitude of tasks, including countertop installation. By employing a steel square, one can guarantee that the corners are perfectly square, an essential aspect for achieving a polished and seamless outcome. Moreover, a steel square can be utilized to measure and delineate the countertop, facilitating precise and tidy cuts. In essence, a steel square is a dependable instrument that greatly aids in the process of installing countertops.

Q:How do you determine the thickness of a steel square?: To determine the thickness of a steel square, you can use a few different methods. One common method is to use a caliper, which is a tool specifically designed for measuring thickness. Place the square between the caliper's jaws and gently close them until they touch both sides of the square. The measurement displayed on the caliper will indicate the thickness of the steel square. Another method is to use a micrometer, which is a more precise tool for measuring thickness. Similar to the caliper, place the square between the micrometer's jaws and tighten them until they firmly grip the square. The measurement displayed on the micrometer will provide an accurate reading of the steel square's thickness. If you don't have access to specialized measuring tools, you can also use a ruler or tape measure. However, keep in mind that these tools may not provide as accurate of a measurement. Place the square on a flat surface and measure the distance from one side to the other using the ruler or tape measure. This measurement will give you an approximation of the steel square's thickness. It is important to note that when using any measuring tool, it is crucial to handle the square gently and ensure that it is properly aligned and flat on the measuring surface. Additionally, always double-check your measurement to ensure accuracy.

Q:What is the difference between a framing square and a try square?: A framing square and a try square are both types of square tools used in woodworking and construction, but they have some key differences in their design and purpose. A framing square, also known as a carpenter's square or steel square, is a larger and more versatile tool. It typically has a longer blade, usually around 24 inches, and a shorter tongue or handle, which is usually around 16 inches. The blade and tongue are joined at a 90-degree angle, forming an L-shape. This design allows the framing square to be used for a variety of tasks, such as laying out and marking right angles, checking the squareness of structures, measuring angles, and making complex calculations in carpentry and framing work. On the other hand, a try square is a smaller and more compact tool. It consists of a short blade, usually around 6 to 12 inches, and a shorter handle, typically around 3 to 6 inches. The blade and handle are also joined at a 90-degree angle, forming an L-shape similar to the framing square. However, the try square is primarily used for checking and marking right angles, ensuring the accuracy and squareness of joints, and making precise measurements in woodworking projects, such as marking and cutting 90-degree angles on boards or checking the squareness of edges and corners. In summary, the main difference between a framing square and a try square lies in their size, versatility, and intended use. A framing square is larger, more versatile, and used for a wide range of tasks in carpentry and construction, while a try square is smaller, more compact, and primarily used for checking and marking right angles in woodworking projects.

Q:How do you use a steel square to measure and mark 22.5-degree angles?: In order to measure and mark a 22.5-degree angle using a steel square, several simple steps must be taken. Begin by positioning the steel square so that the long edge (hypotenuse) faces you, while the shorter edge (leg) is on the left side. It is important to ensure that the right angle formed by these two edges is placed at the starting point of the desired angle. Next, locate the scale on the leg of the square. This scale typically represents degrees, so locate the 45-degree mark on the scale, which is positioned halfway between 0 and 90 degrees. Starting from the 45-degree mark, count two units to the right. Each unit on the scale represents one degree, so by counting two units, we obtain 2 degrees. This is due to the fact that a 45-degree angle lies halfway between 0 and 90 degrees, and half of 45 equals 22.5. Once the 2-degree mark has been identified, use a pencil to draw a line along the edge of the square that intersects this mark. This line will serve as a representation of a 22.5-degree angle. To verify the accuracy of the measurement, it is also possible to measure the angle using a protractor. Place the protractor at the starting point of the angle and align its baseline with the line drawn using the steel square. Confirm that the protractor's zero-degree line aligns with the line from the square, and then check that the protractor indicates an angle of 22.5 degrees. By adhering to these instructions, it is possible to precisely measure and mark a 22.5-degree angle using a steel square.

Q:Can a steel square be used for woodworking joinery?: Yes, a steel square can certainly be used for woodworking joinery. While traditional woodworking squares are typically made of wood or plastic, a steel square can offer certain advantages. Steel squares are known for their durability and accuracy, making them a reliable tool for accurate measurements and ensuring precise joinery. They have a sturdy construction that maintains its shape over time, ensuring consistent and reliable results. When using a steel square for woodworking joinery, it is important to ensure that the square is properly calibrated and aligned before making any measurements or markings. This can be done by checking it against a known accurate reference or by using a combination square to verify its accuracy. Some woodworkers prefer using a steel square for joinery work because of its resistance to warping or damage that may occur with wooden or plastic squares. The steel square can withstand the pressure and rigors of woodworking tasks, making it a long-lasting and reliable tool in the workshop. However, it is worth noting that steel squares tend to be heavier than their wooden or plastic counterparts, which may affect their ease of use for some woodworkers. Additionally, steel squares may have sharp edges, so caution should be exercised when handling them to avoid injury or damaging the wood. In conclusion, while a steel square may not be the traditional choice for woodworking joinery, it can certainly be used effectively and accurately. Its durability, accuracy, and resistance to warping make it a suitable tool for woodworkers looking for a reliable and long-lasting square.

Q:What are some common techniques for using a steel square in guitar making?: In guitar making, the utilization of a steel square can greatly contribute to the attainment of accuracy and precision throughout the construction process. The following are several commonly employed techniques for incorporating a steel square in guitar making: 1. Verification of neck pocket squareness: Prior to attaching the neck to the guitar body, it is imperative to confirm the perfect squareness of the neck pocket. Simply position the steel square against the sides of the neck pocket and examine whether it forms a flawless 90-degree angle. This will guarantee proper alignment and a secure fit between the neck and body. 2. Assessment of fretboard alignment: The steel square can serve as a means to assess the alignment of the fretboard in relation to the guitar body. Position the square along the edge of the fretboard and ascertain whether it aligns perfectly parallel to the centerline of the guitar body. This will ensure optimal intonation and playability of the instrument. 3. Bridge position establishment: The steel square can be instrumental in precisely determining the position of the bridge on the guitar body. Measure and mark the desired distance from the nut to the bridge using a ruler or measuring tape. Subsequently, utilize the square to verify that the bridge is positioned perpendicularly to the centerline of the guitar body, guaranteeing proper string alignment and intonation. 4. Evaluation of headstock angle: The steel square can be employed to assess the angle of the headstock in relation to the neck. By placing the square against the back of the neck and extending it towards the headstock, one can determine whether the headstock angle maintains consistency and alignment with the neck. This aspect is crucial for achieving optimal string tension and tuning stability. 5. Assessment of fretboard straightness: The steel square can also be utilized to evaluate the straightness of the fretboard. Simply lay the square along the length of the fretboard, and if any gaps are present between the square and the fretboard, it indicates that the fretboard is not perfectly straight. This technique can help identify potential issues with neck relief or fret leveling. In conclusion, a steel square is a versatile tool that significantly contributes to the attainment of accuracy and precision during various stages of guitar making. By applying these techniques, one can enhance the quality and playability of the instrument being constructed.

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