Hot Rolled Square Steel Bar Q235, SAE1020, SAE1045

Hot Rolled Square Steel Bar Q235, SAE1020, SAE1045 System 1

Hot Rolled Square Steel Bar Q235, SAE1020, SAE1045

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Loading Port:: Shanghai

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 200000 m.t./month

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Product Description:

Specifications of High Quality Square Steel Bar Q235, SAE1020:

-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:

(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

Packaging & Delivery of Hot Rolled Square Steel Bar Q235, SAE1020, SAE1045:

-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.

Hot Rolled Square Steel Bar Q235, SAE1020, SAE1045

FAQ:

Q1: How soon can we receive the product after purchase?

A1: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q2: The products are invoicing on theoritical weight or on actual weight?

A2: We can do it in both manners, according to the customers' request.

Q3: How do we guarantee the quality of our products?

A3: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q: What are some common applications for a steel square in fence construction?: In fence construction, a steel square proves to be a versatile and reliable tool. Its precision and durability make it a common choice for fence builders. Here are some typical uses of a steel square in this field: 1. Accurate angle measurement and marking: To guarantee the correct alignment and levelness of fence posts and rails, a steel square is frequently employed to precisely measure and mark angles. 2. Squareness verification: Ensuring that corners are perfectly square is essential in fence construction. A steel square becomes an indispensable aid in this task, as it allows builders to confirm the alignment of fence panels and the overall stability of the structure. 3. Determining lengths and cuts: Fence rails, pickets, and panels need to be cut to the correct length. A steel square can be effectively utilized for measuring and marking these dimensions, ensuring uniformity and seamless fitting of all components. 4. Creation of straight lines: A steel square is invaluable for establishing straight lines, whether it is marking the initial boundary or aligning fence elements. By using the square's edge as a guide, builders can achieve greater precision and aesthetic appeal in their construction. 5. Levelness assessment: Fence posts and rails must be level for optimum performance. By placing a steel square against the vertical surface, builders can determine if adjustments are needed to achieve perfect vertical alignment. 6. Gate frame squareness: When constructing a gate, achieving a perfectly square frame is crucial to prevent sagging and ensure smooth operation. A steel square is an indispensable tool for this purpose, providing accuracy in the construction process. Overall, a steel square is an invaluable tool in fence construction. Its ability to provide accurate measurements, levelness, and squareness results in the creation of professionally built and sturdy fences.

Q: What is the difference between a steel square and a framing square?: A steel square and a framing square are both measuring tools commonly used in construction, but they have some key differences. A steel square, also known as a carpenter's square or a rafter square, is typically made of steel and has a shorter blade with a longer tongue. It is used for various layout tasks, such as marking right angles, finding the angle of a roof, or measuring angles for cuts. It usually has multiple scales and markings on its surfaces to assist in precise measurements. On the other hand, a framing square, also called a carpenter's square or a rafter square, is typically made of aluminum or steel and has a longer blade and shorter tongue. It is specifically designed for framing work, such as laying out and cutting rafters, stairs, or other structural elements. It often features additional features like tables for rafter lengths, stair calculations, and common angles used in framing. In summary, while both steel squares and framing squares are used for construction measurements, a steel square is more versatile and suitable for general layout tasks, while a framing square is specialized for framing work and includes additional features specific to that trade.

Q: Are steel squares resistant to rust and corrosion?: Yes, steel squares are generally resistant to rust and corrosion. Steel squares are commonly made from stainless steel, which contains a high percentage of chromium. Chromium is a key element that provides stainless steel with its corrosion-resistant properties. It forms a protective layer on the surface of the steel, known as a passive film, which prevents oxygen from reaching the underlying metal and thus inhibits the formation of rust. However, it is important to note that the level of resistance to rust and corrosion may vary depending on the quality of the steel used. Higher-quality stainless steel squares will have a higher resistance to rust and corrosion compared to lower-quality steel squares. Additionally, the maintenance and care given to the steel squares can also affect their resistance. Regular cleaning and proper storage can help prolong their lifespan and maintain their resistance to rust and corrosion.

Q: Can a steel square be used for checking the squareness of a lathe tailstock?: Yes, a steel square can be used for checking the squareness of a lathe tailstock. A steel square is a precision measuring tool that has a right angle, making it suitable for determining whether the tailstock is perpendicular to the lathe bed. By placing the steel square against the tailstock's base and the lathe bed, any deviation from a right angle can be easily identified. This is an important step in ensuring the accuracy of machining operations performed on the lathe.

Q: How do you use a steel square for making accurate miter cuts?: To use a steel square for making accurate miter cuts, first, place the square against the edge of the material at the desired angle for the miter cut. Ensure that the square is securely held in place. Then, using a pencil or a scribe, mark along the edge of the square to create a guideline for the cut. Finally, carefully cut along the marked line using appropriate tools, such as a miter saw or a handsaw, while maintaining the square against the material to ensure accuracy.

Q: What are some common applications of a steel square in metalworking?: A steel square, also known as a framing square or a carpenter's square, is a versatile tool that finds numerous applications in metalworking. Some common uses of a steel square in metalworking include: 1. Measuring and marking: Steel squares are used for measuring and marking straight lines, angles, and dimensions on metal sheets or bars. They provide precise measurements and ensure accurate cuts or bends. 2. Squaring: Steel squares are essential for ensuring the accuracy of right angles. They can be used to check if two edges of a metal piece are perpendicular to each other or to create 90-degree angles when fabricating metal structures. 3. Laying out patterns: Steel squares are often used to lay out patterns on metal surfaces. By utilizing the various scales and markings on the square, metalworkers can create complex patterns or templates for cutting or bending metal. 4. Guiding cuts: Steel squares can be used as guides for making straight cuts with tools like saws or shears. By aligning the square with the cutting line, metalworkers can ensure a straight and accurate cut. 5. Checking flatness: Steel squares can be used to check the flatness of a metal surface. By placing the square against the metal and observing if there are any gaps or light passing through, metalworkers can determine if the surface is flat or needs further adjustments. 6. Marking angles: Steel squares come with angle markings that allow metalworkers to measure or mark specific angles accurately. This is particularly useful for creating precise bevels or chamfers on metal edges. 7. Layout and framing: Steel squares are commonly used for layout and framing purposes in metalworking. They help metalworkers plan and construct frameworks, ensuring that all corners and joints are properly aligned. 8. Aligning and assembling: Steel squares can be used to align and assemble metal components. By utilizing the square's straight edge, metalworkers can ensure that parts are joined accurately and securely. Overall, a steel square is a fundamental tool in metalworking that assists with measuring, marking, squaring, cutting, and aligning metal pieces. Its versatility and precision make it an essential tool for both professional metalworkers and DIY enthusiasts.

Q: Can a steel square be used for checking the squareness of floor tiles?: Yes, a steel square can be used for checking the squareness of floor tiles. Its straight edges and right angles can help determine if the tiles are properly aligned and perpendicular to each other.

Q: How do you use a steel square to determine the slope of a wheelchair ramp with different heights?: To use a steel square to determine the slope of a wheelchair ramp with different heights, follow these steps: 1. Begin by placing the steel square on the ramp's surface, ensuring that one edge of the square is parallel to the ground and the other edge is perpendicular to it. 2. Position the square at the bottom of the ramp, aligning the perpendicular edge with the ground. Make sure it is firmly against the surface. 3. Measure the vertical rise or height of the ramp from the ground level to the highest point at the top of the ramp. 4. Slide the square up the ramp while keeping the perpendicular edge aligned with the ground. Stop once the horizontal (parallel to the ground) edge is touching the highest point of the ramp. 5. Observe where the vertical edge of the square intersects with the ramp's surface. This point indicates the horizontal distance traveled along the ramp for the given vertical rise. 6. Measure the horizontal distance from the starting point (where the square first touched the ground) to the point where the vertical edge intersects with the ramp's surface. 7. Now, to determine the slope of the ramp, divide the vertical rise by the horizontal distance traveled along the ramp. This will give you the slope ratio or the rise-to-run ratio. For example, if the vertical rise is 24 inches and the horizontal distance is 192 inches, the slope ratio would be 24/192, which simplifies to 1/8. This means that for every 8 units traveled horizontally along the ramp, there is a rise of 1 unit vertically. Using a steel square in this manner allows you to accurately determine the slope of a wheelchair ramp with different heights, ensuring it meets the necessary requirements for accessibility and safety.

Q: Can a steel square be used for checking the plumbness of a corner post?: No, a steel square cannot be used for checking the plumbness of a corner post. A steel square is primarily designed for measuring and marking right angles, not for determining vertical alignment. For checking plumbness, a level or plumb bob would be more suitable tools.

Q: How do you use a steel square to measure and mark 33.75-degree angles?: To use a steel square to measure and mark a 33.75-degree angle, follow these steps: 1. Begin by setting your steel square on a flat surface, ensuring it is aligned properly. 2. Locate the 45-degree angle on the square, which is usually marked by a small notch or line. 3. Align the square so that the 45-degree angle line is parallel to the edge of the material or surface you are working with. 4. Use a protractor or angle measuring tool to measure and mark a 33.75-degree angle on the steel square. 5. Once you have determined the correct angle, use a marker or pencil to make a small mark on the steel square at the desired angle measurement. 6. From the mark you made, extend a straight line across the material or surface you are working on using the square as a guide. 7. Double-check your measurements and marks to ensure accuracy before proceeding with any cutting or further work. By using a steel square and carefully measuring and marking the desired 33.75-degree angle, you can ensure precision when working with various materials or projects.

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