Selling a variety of square rectangle tube
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
1、Structure of Selling a variety of square rectangle tube
Square tube, square tube is a kind of call and rectangular tube, is equal and not equal to the length of steel pipe. Is the strip through the process of processing roll system. In general is the strip through the demolition of the package, flat, curly, welded to form a circular tube, and then rolled into a square tube and then cut into a square tube and then cut into the required length.
2、Main Features of Selling a variety of square rectangle tube:
• High manufacturing accuracy
• High strength
• Small inertia resistance
• Strong heat dissipation ability
• Good visual effect
• Reasonable price
3、 Selling a variety of square rectangle tube Specification：
Standard | GB, DIN, ASTM |
Grade | 10#-45#, 16Mn 10#, 20#, 45#, 16Mn |
Thickness | 1.5 - 25 mm |
Section Shape | Square and rectangular |
Outer Diameter | 20*20 mm-------400*400mm 20*30mm*300*500mm |
Place of Origin | Tianjin, China (Mainland) |
Length | 3-12M |
Outer Diameter | 20*20 mm-------400*400mm 20*30mm*300*500mm |
Grade | 235B 345B |
Standard | ASME, ASTM |
1) Material:(ASTM A 106/A53 GRB.API5LGRB,GB,235B,345B
2) Specification range:OD: 20*30mm----300*500mm 20*20 mm---400*400mm ,WT: 1.5 - 25 mm ,length:3-12m or according to the requirement of clients.
3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut,plastic capped,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing.
4、Packaging & Delivery
Packaging Details: | seaworthy package,bundles wrapped with strong steel strip |
Delivery Detail: | 15-30days after received 30%TT |
5、FAQ of Selling a variety of square rectangle tube:
①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test
on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.
②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.
③Why should you chose us?
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.
6、 Selling a variety of square rectangle tube Images：
- Q: What are the different methods of pipe inspection for steel pipes?
- Steel pipes can be inspected using various methods. Here are some commonly employed techniques: 1. Visual Inspection: Trained inspectors visually examine both the exterior and interior of the pipe to detect any visible defects or abnormalities. This preliminary method is often used before more advanced techniques are applied. 2. Magnetic Particle Inspection (MPI): By applying a magnetic field to the steel pipe and iron particles to its surface, inspectors can identify surface cracks or defects. Leakage of magnetic flux caused by these abnormalities can be detected with this method, which is particularly effective for ferromagnetic materials. 3. Ultrasonic Testing (UT): UT is a non-destructive testing method that utilizes high-frequency sound waves to identify internal defects or anomalies in steel pipes. A transducer sends ultrasonic waves into the pipe, and reflections or echoes of the sound waves are analyzed to determine the presence of defects, such as corrosion, cracks, or variations in wall thickness. 4. Radiographic Testing (RT): This method involves using X-rays or gamma rays to create an image of the internal structure of the steel pipe. The resulting image reveals any defects, such as cracks, corrosion, or weld discontinuities. RT is commonly used for inspecting welded joints. 5. Eddy Current Testing (ECT): ECT is a non-destructive testing technique that utilizes electromagnetic induction to detect surface and near-surface defects in steel pipes. By passing a coil carrying an alternating current over the pipe's surface, any changes in electrical conductivity or magnetic field caused by defects are detected and analyzed. 6. Acoustic Emission Testing (AET): AET involves detecting and analyzing high-frequency acoustic signals emitted by materials undergoing deformation or damage. In the case of steel pipes, AET can monitor and identify defects like cracks, leaks, or corrosion by analyzing the acoustic signals emitted during service or under stress. These methods are just a few examples of commonly used techniques for inspecting steel pipes. The choice of method depends on factors such as the type of defect being sought, accessibility of the pipe, desired sensitivity level, and cost and time constraints. Using a combination of inspection techniques is often recommended to ensure a thorough assessment of steel pipes.
- Q: What is the maximum length of steel pipes available in the market?
- The maximum length of steel pipes available in the market can vary depending on the specific supplier and industry requirements. However, standard lengths typically range from 20 to 40 feet.
- Q: How are steel pipes used in the manufacturing of storage tanks?
- Steel pipes are commonly used in the manufacturing of storage tanks due to their high strength, durability, and resistance to corrosion. These pipes are typically used as the main structural component of the tank, providing the necessary strength to support the weight of the stored materials. Additionally, steel pipes can be easily welded together, allowing for the construction of large, seamless tanks that can hold various liquids or gases. Overall, steel pipes play a crucial role in ensuring the integrity and longevity of storage tanks.
- Q: Heating system DN40 and DN32 welded steel pipe how to connect?
- As for the flange connection: low pressure pipeline is generally not used in this way, can be divided into threaded flanges and flange welding flange, and the flange connecting pipes of different diameters, only the welded flange to diameter, said in a low pressure pipeline which has low pressure pipe connection make an unnecessary move, this is not much, but there are also people with non the standard flange for connecting different pipe diameter, which is not consistent with the technical specification!
- Q: How are steel pipes protected against ultraviolet (UV) radiation?
- Coatings or paints can be applied to steel pipes to protect them from ultraviolet (UV) radiation. These coatings are designed to resist the damaging effects of UV radiation, such as fading, chalking, or degradation of the steel. One common method of protection involves using UV-resistant paints or polymeric coatings that contain additives or pigments capable of reflecting or absorbing UV rays. These coatings not only shield the steel from UV radiation but also provide an extra layer of corrosion protection, increasing the pipes' lifespan. Another method used for UV protection is applying thermal insulation materials. These materials, such as foam or coatings with reflective properties, help reduce the impact of UV radiation on the steel pipes. By acting as a shield, they prevent direct exposure to UV rays and minimize potential damage from prolonged exposure. It's essential to consider various factors, including the specific application, environmental conditions, and desired durability of the steel pipes, when choosing a UV protection method. Seeking advice from experts in the field can help determine the most suitable solution for a particular project or application.
- Q: What is the weight of hot galvanized steel tubes? DN150 4mm wall thickness
- GB/T3091-2008: DN150 welded steel pipe, wall thickness of 6mm, the theory of the weight of welded steel pipe 24.02kg/m, galvanized steel pipe should be multiplied by the weight coefficient after galvanizing, C, DN150, wall thickness of 6mm, C=1.02, DN150, theoretical weight and wall thickness of 6mm galvanized steel 1.02*24.02= 24.5kg/m.
- Q: How do you calculate the pipe pressure loss coefficient for steel pipes?
- To determine the pressure loss coefficient for steel pipes, one can utilize the widely accepted Darcy-Weisbach equation. This equation calculates the pressure loss in pipes caused by friction. It can be represented as follows: ΔP = f × (L/D) × (V^2/2g) In this equation: - ΔP represents the pressure loss in units of pressure, such as psi or Pa. - f denotes the Darcy friction factor, a dimensionless value. - L signifies the pipe length in units of length, such as feet or meters. - D represents the pipe diameter in units of length, such as feet or meters. - V indicates the fluid velocity flowing through the pipe in units of velocity, such as ft/s or m/s. - g represents the acceleration due to gravity in units of acceleration, such as ft/s² or m/s². The Darcy friction factor (f) is a dimensionless parameter that quantifies the amount of frictional resistance in the pipe. For steel pipes, this factor can be determined using the Moody diagram. The Moody diagram presents a graphical relationship between the Reynolds number (Re) and the friction factor (f) for various pipe roughness values. To calculate the pressure loss coefficient, one should find the friction factor (f) value based on the Reynolds number (Re) and the relative roughness of the steel pipe (ε/D). The Reynolds number is calculated as follows: Re = (ρ × V × D) / μ In this equation: - ρ represents the fluid density in units of mass per unit volume, such as lb/ft³ or kg/m³. - V denotes the fluid velocity in units of velocity, such as ft/s or m/s. - D signifies the pipe diameter in units of length, such as feet or meters. - μ represents the dynamic viscosity of the fluid in units of force per unit area per unit time, such as lb/ft·s or kg/m·s. Once the Reynolds number (Re) and the relative roughness (ε/D) are determined, one can refer to the Moody diagram to find the corresponding friction factor (f). The pressure loss coefficient (K) can then be calculated using the following formula: K = f × (L/D) In this equation: - L represents the pipe length in units of length, such as feet or meters. - D denotes the pipe diameter in units of length, such as feet or meters. By utilizing the Darcy-Weisbach equation and the Moody diagram, one can accurately calculate the pressure loss coefficient for steel pipes. This calculation is crucial for the design and analysis of fluid flow systems.
- Q: How are steel pipes used in the manufacturing of fire sprinkler systems?
- Steel pipes are commonly used in the manufacturing of fire sprinkler systems due to their durability, strength, and resistance to high temperatures. These pipes are used to transport pressurized water or fire retardant throughout the sprinkler system, ensuring quick and effective fire suppression. The steel pipes are installed strategically throughout the building, delivering water to sprinkler heads that are activated when heat is detected. Overall, steel pipes play a crucial role in the safe and efficient operation of fire sprinkler systems, protecting lives and property from the devastating effects of fires.
- Q: What are the common maintenance practices for steel pipes?
- The common maintenance practices for steel pipes include regular inspections for signs of corrosion or damage, cleaning and removing any debris or obstructions, applying protective coatings to prevent rust and corrosion, and conducting periodic leak tests to ensure the integrity of the pipes. Additionally, proper handling and storage procedures should be followed to prevent any physical damage or contamination.
- Q: What is the difference between steel pipe and polyethylene pipe?
- The main difference between steel pipe and polyethylene pipe lies in their materials and properties. Steel pipe is made from a durable and strong material, which makes it suitable for high-pressure applications and environments where strength is crucial. On the other hand, polyethylene pipe is made from a plastic material that offers flexibility and resistance to corrosion, making it ideal for underground and aboveground installations. Additionally, steel pipe requires welding or threading for connections, while polyethylene pipe uses fusion or mechanical fittings. Ultimately, the choice between steel pipe and polyethylene pipe depends on the specific requirements of the project and the desired characteristics needed.
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Selling a variety of square rectangle tube
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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