15mm*1.77kg/m square bar for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 100000 m.t./month
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Product Description:
Hollow Section-Square Tubes
Application:
It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.
Standard：
ASTM A500, GB6728
Steel grade:
ASTM A500: A, B, C
GB6728：Q195，Q215，Q235，Q345
Size of Pipe:
*Remark: Besides below sizes, we also can arrange production based on requirement of customers
SIZE(mm) | THICKNESS(mm) |
10×10 | 0.6-1.0 |
12×12 | 0.6-1.0 |
16×16 | 0.6-1.2 |
19×19 | 0.6-1.5 |
20×20 | 1.6-1.5 |
25×25 | 1.0-2.75 |
30×30 | 1.0-2.75 |
32×32 | 1.0-3.0 |
38×38 | 1.0-3.0 |
40×40 | 1.0-3.5 |
50×50 | 1.0-5.0 |
60×60 | 1.0-6.0 |
63.5×63.5 | 1.0-6.0 |
70×70 | 1.5-6.0 |
75×75 | 1.5-6.0 |
80×80 | 2.0-6.0 |
90×90 | 2.0-6.0 |
100×100 | 2.3-6.0 |
120×120 | 4.0-6.0 |
125×125 | 4.0-6.0 |
150×150 | 4.0-8.0 |
200×200 | 6.0-12 |
250×250 | 6.0-12 |
300×300 | 6.0-12 |
400×400 | 6.0-12 |
Standard: ASTM A500
Chemical Composition(%)
Chemical Requirement | ||||
| Composition % | |||
Grade A | Grade B | |||
Heat | Product | Heat | Product | |
Element | analysis | analysis | analysis | analysis |
Carbon max | 0.26 | 0.3 | 0.22 | 0.26 |
Manganese max | … | … | 1.4 | 1.45 |
Phosphorus, max | 0.035 | 0.045 | 0.03 | 0.04 |
Sulfur max | 0.035 | 0.045 | 0.02 | 0.03 |
Where an ellipsis (...)appears in this table, there is no requirement | ||||
For each reduction of 0.01 percentage point below the specified maximum for carton, and increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.6% by product analysis | ||||
Mechanical Properties
Tensile Requirement | ||
| Grade A | Grade B |
Tensile strength, min, psi (Mpa) | 48000 (400) | 70000 (483) |
Yield strength, min, psi (Mpa) | 36000 (250) | 50000 (345) |
Elongation in 2 in. (50.8mm), min, % | 23 | 23 |
GB6728：
Steel Grade |
CHEMICAL COMPOSITION |
MECHANICAL PROPERTIES | ||||||
C (%) |
Si (%) |
Mn
(%) |
P(%)
Max |
S (%)
Max |
YS(Mpa)
Min |
TS(Mpa)
Min |
El (%)
Min | |
Q195 |
0.06-0.012 |
0.3 |
0.25-0.5 |
0.45 |
0.5 |
195 |
315 |
22 |
Q215 |
0.09-0.15 |
0.3 |
0.25-0.55 |
0.45 |
0.5 |
215 |
335 |
22 |
Q235 |
0.12-0.22 |
0.3 |
0.3-0.7 |
0.45 |
0.45 |
235 |
375 |
20 |
Q345 |
0.20 |
0.55 |
1.0-1.6 |
0.45 |
0.45 |
345 |
510 |
21 |
Square Welded Hollo Sectio/Welded Rectangle Hollow Section
- Q: How do you use a steel square to find the height of a retaining wall?
- In order to determine the height of a retaining wall using a steel square, several measurements and a basic understanding of the tool are necessary. The first step is to ensure that the steel square is clean and in good condition. To begin, position yourself near the retaining wall where you have a clear view of the top. Hold the steel square vertically, with the shorter side against the wall and the longer side extending upward. Align the square's bottom edge with the base of the wall. Next, measure the distance from the bottom edge of the steel square to the top of the retaining wall. This can be done by either extending your arm or using a measuring tape. It is important to keep the square perpendicular to the ground in order to obtain an accurate measurement. Once the measurement is obtained, write it down. This distance represents the height of the retaining wall and can be used for various purposes, such as calculating the necessary materials for repairs or assessing the wall's stability. It is crucial to emphasize the importance of accuracy when using a steel square to determine the height of a retaining wall. Take your time to ensure that the square is properly aligned and that your measurements are precise. Additionally, it is always beneficial to double-check your calculations and measurements to avoid any mistakes.
- Q: How do you use a steel square to determine the length of a hypotenuse?
- To use a steel square to determine the length of a hypotenuse, you would first align one side of the square (usually the longer leg) with the known length of one side of the right triangle. Let's call this side "a". Next, extend the other side of the square (usually the shorter leg) until it intersects with the unknown hypotenuse. Let's call this side "b". Now, measure the distance from the starting point of the known side "a" to the point where the extended side "b" intersects with the hypotenuse. This measurement represents the length of side "b". Finally, using the Pythagorean theorem, which states that the square of the hypotenuse is equal to the sum of the squares of the other two sides (a^2 + b^2 = c^2), you can calculate the length of the hypotenuse "c" by substituting the values of sides "a" and "b" into the equation and solving for "c".
- Q: What are some common measurements that can be taken with a steel square in electrical rough-ins?
- A steel square proves to be quite useful for various measurements when it comes to electrical rough-ins. Allow me to present a few instances: 1. Right angles: Verification and marking of right angles constitute the primary function of a steel square. It aids in guaranteeing the perpendicular installation of electrical boxes, conduits, and other components to the wall or floor. 2. Box alignment: The placement of a steel square against the sides of an electrical box enables you to confirm its levelness and flushness with the wall. This ensures proper installation, leaving no room for gaps or unevenness. 3. Depth measurements: Steel squares often feature markings indicating inches or centimeters, facilitating the measurement of the depth of electrical boxes, conduit runs, or recessed lighting fixtures. This ensures correct installation depths, adhering to safety standards. 4. Pipe or conduit bending: A steel square can serve as a guide when bending pipes or conduits. By aligning the square precisely with the desired angle, accurate and consistent bends can be achieved, particularly in situations requiring precision angles. 5. Stud locations: While running wiring through walls, a steel square can assist in locating the center of a stud. By placing the square against the wall and sliding it until it reaches the stud's edge, you can mark the central point for drilling or cutting. In summary, a steel square is a versatile tool that proves invaluable to electricians, guaranteeing accurate and precise measurements throughout the electrical rough-in process.
- Q: What are the common mistakes to avoid when using a steel square in construction?
- To effectively utilize a steel square in construction, it is crucial to be mindful of certain errors that may arise. Let's discuss several mistakes to steer clear of: 1. Flawed alignment: One prevalent blunder involves improper alignment of the steel square with the designated edge or surface for measurement or marking. This can lead to imprecise measurements and cuts. Always ensure correct alignment of the square before making any markings or cuts. 2. Inconsistent pressure application: Another error entails uneven pressure when utilizing the square. This can result in irregular or inaccurate markings. It is vital to apply consistent and firm pressure while using the square to ensure accuracy. 3. Neglecting squareness verification: Regularly checking the square for squareness is imperative. With time, the square may become distorted or bent, which can impact measurement accuracy. Consistently inspect the square and ensure it remains true and square. 4. Underestimating the significance of the notch: Numerous steel squares feature a notch or cutout on one side. This notch facilitates precise marking and measurement of angles. It is essential to utilize this feature whenever necessary to ensure accurate angles and cuts. 5. Disregarding the importance of maintenance: If not properly maintained, steel squares can succumb to rust or dirt accumulation. It is crucial to keep the square clean and dry to prevent rust and corrosion. Regularly inspect the square for any signs of damage or wear and promptly address any issues. By exercising caution and avoiding these common mistakes, construction professionals can effectively utilize a steel square, ensuring accurate measurements, markings, and cuts.
- Q: How do you use a steel square to determine roof pitch?
- To use a steel square to determine roof pitch, you will need to follow a few simple steps. First, ensure that your steel square is clean and free of any debris or rust. This will ensure accurate measurements. Next, locate the pivot point on your steel square. This is usually marked by a small hole or a notch on one of the edges. Place the pivot point of the steel square against the edge of the roof, ensuring that it is flush against the surface. Hold it securely in place. Now, look for the scale on the steel square that indicates roof pitch. This scale is usually located on the blade of the square and is marked with degrees or rise and run ratios. Align the edge of the square with the roof surface, ensuring that it is parallel to the roof slope. Read the measurement on the scale where the other edge of the square intersects. This measurement will indicate the roof pitch or slope. For example, if the measurement on the scale reads 6:12, it means that the roof has a pitch of 6 inches of vertical rise for every 12 inches of horizontal run. By using a steel square in this manner, you can accurately determine the pitch of a roof, which is essential for various construction or renovation projects.
- Q: Can a steel square be used for checking the squareness of a door opening?
- Yes, a steel square can be used for checking the squareness of a door opening.
- Q: What are the common misconceptions about using a steel square?
- One common misconception about using a steel square is that it is only used for measuring right angles. In reality, a steel square is a versatile tool that can be used for a variety of measurements and layout tasks, such as marking angles, checking for squareness, and determining pitch or slope. Additionally, another misconception is that a steel square is difficult to use or requires advanced knowledge. With some basic understanding and practice, anyone can effectively use a steel square for accurate measurements and layout work.
- Q: Can a steel square be used for shed construction?
- Certainly! Shed construction can definitely benefit from the use of a steel square. Known as a framing square or carpenter's square, this versatile tool is commonly employed in carpentry and construction projects. Its construction from durable steel allows it to withstand heavy use. The steel square serves multiple purposes in construction. It facilitates the laying out and marking of angles, enables accurate measurements, ensures squareness, and guarantees straight lines and right angles. Its surface is marked with measurements and indicators, enabling precise and efficient calculations. In shed construction, the steel square finds various applications. It aids in marking and measuring lumber for precise cuts, ensuring proper fitment of all pieces. It also verifies squareness and straightness during assembly, guaranteeing accurate and even construction. Moreover, the steel square ensures the alignment and angle of shed components such as walls and roofs. This is particularly crucial for sheds with gable roofs, as the steel square assists in cutting and installing roof rafters at the correct angle to facilitate water runoff. In summary, the steel square is an invaluable tool for shed construction, offering assistance in achieving precise and accurate results.
- Q: How do you use a steel square to measure the width of a door frame?
- To use a steel square to measure the width of a door frame, place the square against the inside edge of the door frame, ensuring it is aligned with the top and bottom. Then, read the measurement on the edge of the square to determine the width of the door frame.
- Q: What are some common applications for a steel square in metalworking?
- Some common applications for a steel square in metalworking include measuring and marking angles, checking the squareness of corners, aligning and setting up machines, and determining the flatness of surfaces.
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15mm*1.77kg/m square bar for construction
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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