square steel carbon steel square bar System 1

square steel carbon steel square bar

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1000 m.t.

Supply Capability:: 5000 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.

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 out finger joints?: Certainly! The utilization of a steel square for marking out finger joints is indeed possible. In the realm of woodworking and carpentry, a steel square is a tool of great versatility and precision. It boasts a 90-degree angle and a ruler positioned along its edge, rendering it an ideal instrument for delineating straight lines and angles. In order to achieve a proper fit, accuracy plays a pivotal role when crafting finger joints. By employing a steel square, one can skillfully designate the necessary lines and angles required to fabricate these joints, thereby enabling meticulous and immaculate cuts. It is worth noting, however, that finger joints necessitate meticulous measurements and layout. Thus, for optimal outcomes, it is recommended to employ either a specialized finger joint jig or a dado blade on a table saw.

Q:How do you use a steel square to measure and mark 84.375-degree angles?: To use a steel square to measure and mark 84.375-degree angles, you would typically refer to the protractor scale on the square. Align one edge of the square with the reference line, and then locate the angle measurement on the protractor scale that corresponds to 84.375 degrees. Once identified, mark the desired angle on the material using a pencil or any suitable marking tool.

Q:What are some common features of steel squares?: Some common features of steel squares include: 1. Material: Steel squares are made from high-quality steel, which gives them durability and strength. 2. Shape: Steel squares are typically shaped like a right-angled triangle, with one long side and two shorter sides forming a 90-degree angle. 3. Accuracy: Steel squares are designed to provide accurate measurements and angles. The edges and corners are precisely machined to ensure precise and consistent results. 4. Markings: Steel squares often have markings along the edges, allowing users to measure and mark specific lengths or angles. 5. Graduations: Steel squares may have graduations or scales engraved or printed on the surfaces, enabling users to measure angles or distances more easily. 6. Versatility: Steel squares can be used for a variety of purposes, including measuring, marking, and checking right angles, as well as for determining and transferring angles. 7. Size and weight: Steel squares come in various sizes, typically ranging from small pocket-sized squares to larger squares used for more heavy-duty applications. The weight of a steel square depends on its size and thickness. 8. Corrosion resistance: Steel squares are often treated or coated to enhance their resistance to rust and corrosion, ensuring a longer lifespan. 9. Stability: Steel squares are designed to be stable and rigid, providing a reliable reference for accurate measurements and layout work. 10. Multi-functionality: Some steel squares may feature additional features, such as built-in spirit levels, scribing tools, or adjustable components, making them more versatile and convenient for specific applications.

Q:Can a steel square be used for plumbing work?: Plumbing work can indeed utilize a steel square. Known as a framing square or carpenter's square, this versatile tool finds its place in the construction industry, including plumbing. Although not the go-to tool for plumbers, it can prove useful in specific scenarios. A steel square enables the measurement and marking of angles, checking for squareness, and laying out straight lines. These functions prove invaluable when dealing with plumbing projects demanding precise measurements and alignments. For instance, during pipe installations, a steel square guarantees proper alignment at right angles. Furthermore, a steel square facilitates swift and accurate measurements for pipe cutting and joining. Its straight edges and measuring scales provide the accuracy required for precise cuts and connections. Nevertheless, it is essential to acknowledge that other tools designed explicitly for plumbing work may better suit certain tasks. Pipe wrenches commonly handle tightening and loosening pipes, while pipe cutters efficiently slice through them. To summarize, although not the most specialized tool for plumbing, a steel square remains effective in certain situations. It comes in handy for measuring, marking, and layout tasks, as well as providing accurate measurements for pipe cutting and joining.

Q:Can a steel square be used for checking the flatness of concrete slabs?: No, a steel square is not suitable for checking the flatness of concrete slabs. A steel square is primarily used for measuring right angles and laying out lines, not for evaluating the levelness or evenness of surfaces. A better tool for checking the flatness of concrete slabs would be a straightedge or a laser level.

Q:What are the different ways to hold a steel square?: To hold a steel square, there are various methods to consider based on the specific task and personal preference. Here, we present some commonly used techniques: 1. Finger grip: The most basic and widely used approach involves firmly grasping the steel square with your fingers and thumb, ensuring a secure hold. 2. Palm grip: Some individuals prefer this method for enhanced control and stability. It involves holding the steel square in your palm, with your fingers wrapped around the handle. This grip facilitates greater precision and accuracy during usage. 3. Thumb grip: Another popular technique is to hold the steel square with your thumb on one side of the handle and your fingers on the other side. This grip provides stability and control while keeping your fingers free for other tasks. 4. Hook grip: In specific situations where stability is required, you may need to hang the steel square on an edge or hook it onto a surface. To achieve this, you can hold the square by inserting your fingers through the holes or slots in the handle, creating a grip resembling a hook. 5. Clamped grip: For more intricate tasks such as woodworking or metalworking, securing the steel square in place using clamps or vices can be advantageous. This ensures the square remains fixed, enabling precise measurements and marking. Ultimately, the choice of how to hold a steel square depends on personal comfort, the nature of the task, and the desired level of control and stability. It is crucial to find a grip that allows for safe and effective use of the square.

Q:How do you use a steel square to mark out 30-degree angles?: To use a steel square to mark out 30-degree angles, you can follow these steps: 1. Start by placing the steel square on the surface or material you want to mark, ensuring that one of the legs of the square is aligned with a straight edge of the material. 2. Locate the 45-degree angle on the steel square. This is typically indicated by a 45-degree mark or notch on the inside corner of the square. 3. Once you have identified the 45-degree angle, align one leg of the square with the straight edge and position the other leg towards the direction you want to create a 30-degree angle. 4. Carefully pivot the square on the straight edge, keeping the 45-degree mark fixed on the edge. As you pivot, the other leg of the square will rotate, allowing you to mark out the 30-degree angle on your material. 5. Once you have achieved the desired angle, use a pencil or a marking tool to trace along the edge of the square or use the square as a guide to draw a line. Remember to always double-check your measurements and ensure that the square is securely positioned on the material to achieve accurate and precise markings.

Q:What are some common uses for a steel square in construction?: A steel square, also known as a framing square or carpenter square, is a versatile tool commonly used in construction for various purposes. Here are some common uses for a steel square in construction: 1. Measuring and layout: A steel square is often used to measure and mark straight lines, right angles, and other angles accurately. It allows construction professionals to lay out and mark dimensions on various materials such as wood, metal, and concrete. 2. Checking for squareness: One of the primary uses of a steel square is to check if corners and joints are square. By placing the square against the corner, it helps determine if the angle is exactly 90 degrees, ensuring precise and accurate construction. 3. Cutting and marking angles: Steel squares come with a protractor scale, allowing construction workers to measure and mark angles other than 90 degrees. This is particularly useful when cutting materials at specific angles, such as when creating miter cuts or roof rafters. 4. Determining roof pitches: Roofers use steel squares to measure and determine roof pitches or slopes. By aligning the square with the roof's edge, they can calculate the angle and ensure that the roof pitch is correct for proper water drainage. 5. Guiding circular saws and other power tools: Steel squares can act as a straight edge guide for circular saws, ensuring accurate cuts. By holding the square against the material and running the saw blade alongside it, construction professionals can make straight and precise cuts. 6. Creating parallel lines: Steel squares can be used to create parallel lines on various surfaces. By aligning the square's edge with a reference point and marking along the other side, construction workers can easily draw or mark parallel lines on the material. 7. Checking and marking stud locations: In framing or wall construction, steel squares are handy tools for locating and marking stud positions. By using the square's dimensions, construction professionals can measure and mark stud locations accurately, ensuring proper spacing and alignment. 8. Setting up right angles: Steel squares are commonly used to set up right angles during construction. They help ensure that walls, frames, and other structures are properly aligned and perpendicular, resulting in strong and sturdy construction. Overall, a steel square is an essential tool in construction due to its versatility and accuracy. It enables construction professionals to measure, layout, and mark various angles and dimensions, ensuring precise and high-quality construction projects.

Q:Can a steel square be used for measuring roofing angles?: Yes, a steel square can be used for measuring roofing angles.

Q:What are some common misconceptions about using a steel square?: One common misconception about using a steel square is that it is only used for making right angles. In reality, a steel square is a versatile tool that can be used for various measurements and layouts in woodworking and construction. Another misconception is that it is difficult to use or requires advanced skills. However, with a little practice and understanding of its different features, using a steel square can be quite straightforward and useful in many different tasks.

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