Galvanized welded square rectangular tube
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 15 m.t.
- Supply Capability:
- 8000 m.t./month
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Specification
1、Structure of Galvanized welded round tube and square rectangular tube:
The surface of galvanized steel pipe welded steel pipe of hot dip galvanized layer or. Galvanized can increase the corrosion resistance of the steel tube, prolong service life. Galvanized pipe is widely used, in addition to water, gas, oil and other general low pressure fluid pipelines. It is also used in the petroleum industry, especially for offshore oil field of oil well pipe and oil pipe, chemical, coking equipment of oil heater, condensation cooler, coal run oil exchanger tube, and trestle pile, the mine tunnel support frame tube.
2、Main Features of Galvanized welded round tube and square rectangular tube:
• High manufacturing accuracy
• High strength
• Good visual effect
• Reasonable price
3、 Galvanized welded round tube and square rectangular tube Specification：
Standard | GB, DIN, ASTM ASTM A106-2006, ASTM A53-2007 |
Grade | 10#-45#, 16Mn 10#, 20#, 45#, 16Mn |
Thickness | 1 - 33 mm |
Section Shape | Round |
Outer Diameter | 21 - 610mm |
Place of Origin | Tianjin, China (Mainland) |
Secondary Or Not | Non-secondary |
Application | Hydraulic Pipe |
Technique | Cold Drawn |
Certification | API |
Surface Treatment | factory state or painted black |
Special Pipe | API Pipe |
Alloy Or Not | Non-alloy |
Length | 5-12M |
Outer Diameter | 21.3-610mm |
Grade | 20#, 45#, Q345, API J55, API K55, API L80, API N80, API P110, A53B |
Standard | ASME, ASTM |
1) Material:Q195 Q235 Q345 X42 X52
2) Specification range:OD:21.3-610mm,WT:6-70mm,length:6-12m or according to the requirement of clients.
3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also develop new products according to the requirements of our clients!
4) Surface: 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 Galvanized welded round tube and square rectangular 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、 Galvanized welded round tube and square rectangular tube Images：
- Q: How to calculate the maximum bending stress of steel pipe? Is there a list of the maximum flexural normal stresses for steel pipes of different materials and diameters?
- The maximum flexural normal stress is calculated as: Sigma =M/ (gamma x*Wnx).Of which: M is the maximum bending moment of the steel tube;Gamma X - the plastic development coefficient of the cross section; for the cross section of the steel tube, 1.15,
- Q: What are the different grades of steel pipes?
- The different grades of steel pipes vary based on their chemical composition and physical properties. Some commonly used grades include carbon steel pipes (grades A, B, and C), alloy steel pipes (grades P1, P5, P9, and P11), stainless steel pipes (grades 304, 316, and 321), and duplex steel pipes (grades 2205 and 2507). Each grade offers specific characteristics suited for different applications and industries.
- Q: How do you calculate the flow rate through a steel pipe?
- To calculate the flow rate through a steel pipe, you need to consider several factors. The most important ones are the diameter of the pipe, the pressure difference across the pipe, and the properties of the fluid flowing through it. Firstly, measure the inside diameter of the steel pipe accurately. This measurement is essential as it determines the cross-sectional area through which the fluid flows. The units for the diameter should be consistent with the units used for other measurements. Next, determine the pressure difference across the pipe. This can be done by measuring the pressure at two points along the pipe, typically at the inlet and outlet. The pressure measurements should be taken at the same height to avoid any discrepancies. The pressure difference is usually given in units of pressure (such as psi, kPa, or bar). Once you have the diameter and pressure difference, you can use the Bernoulli equation or the Darcy-Weisbach equation to calculate the flow rate. The Bernoulli equation relates the pressure difference to the velocity of the fluid. However, this equation assumes ideal conditions, neglecting factors such as friction losses, viscosity, and turbulence. The Darcy-Weisbach equation is more accurate and considers these factors. To use the Darcy-Weisbach equation, you need to know the properties of the fluid flowing through the pipe, such as its density and viscosity. These properties can be determined either through experimentation or by referring to literature values. Once you have all the necessary information, you can use the Darcy-Weisbach equation: Q = (π/4) * D^2 * √[(2 * ΔP) / (ρ * f * L)] Where: Q is the flow rate (in cubic meters per second or any other consistent units) D is the diameter of the pipe (in meters or any other consistent units) ΔP is the pressure difference across the pipe (in Pascals or any other consistent units) ρ is the density of the fluid flowing through the pipe (in kilograms per cubic meter or any other consistent units) f is the friction factor, which depends on the Reynolds number and the roughness of the pipe. L is the length of the pipe (in meters or any other consistent units) By plugging in the values for all the variables, you can calculate the flow rate through the steel pipe accurately.
- Q: How are steel pipes protected against ultraviolet (UV) radiation?
- Steel pipes are typically protected against ultraviolet (UV) radiation through the application of specialized coatings or paints that act as a barrier, preventing direct exposure of the steel to UV rays. These coatings are designed to withstand UV degradation, prevent corrosion, and extend the lifespan of the pipes.
- Q: What are the common standards and specifications for steel pipes?
- The common standards and specifications for steel pipes include ASTM A53, ASTM A106, API 5L, and ISO 3183. These standards outline the requirements for the manufacturing, dimensions, and mechanical properties of steel pipes used in various industries such as oil and gas, construction, and transportation. Additionally, specific applications may have their own standards and specifications that need to be met for quality and safety purposes.
- Q: How do steel pipes handle water hammer?
- Steel pipes can effectively handle water hammer by absorbing the pressure surges caused by sudden changes in water flow. The solid and durable nature of steel helps to dampen the impact and prevent damage to the pipes or other components of the plumbing system. Additionally, steel pipes can be designed and installed with appropriate supports, expansion joints, and water hammer arrestors to further mitigate the effects of water hammer.
- Q: How are steel pipes used in geothermal energy systems?
- Steel pipes are used in geothermal energy systems to transport the hot water or steam from the underground reservoir to the surface. These pipes are resistant to high temperatures and corrosion, ensuring the safe and efficient transfer of geothermal fluids. Additionally, steel pipes provide durability and strength, making them suitable for the harsh conditions of geothermal environments.
- Q: Do steel pipes require maintenance?
- Yes, steel pipes do require maintenance. Regular maintenance is necessary to ensure their proper functioning and longevity. This may involve cleaning, inspecting for any signs of corrosion or damage, and applying protective coatings to prevent rusting. Additionally, periodic maintenance checks and repairs may be needed to address any leaks or structural issues that may arise over time.
- Q: How are steel pipes joined together?
- Steel pipes are commonly joined together using various welding techniques, such as arc welding, butt welding, or socket welding. Additionally, other methods like threaded connections, flanges, or mechanical couplings can be used for joining steel pipes.
- Q: What are the different methods of insulating steel pipes?
- There exists a variety of methods for insulating steel pipes, depending on the specific needs and requirements of the application. Some commonly utilized methods include: 1. Insulation wraps: By enveloping the steel pipes with insulating materials such as fiberglass, mineral wool, or foam insulation and securing them tightly with adhesive or tape, insulation wraps offer a cost-effective and straightforward installation option favored by many. 2. Insulation coatings: Applying a layer of insulating material directly onto the surface of the steel pipe, insulation coatings made from materials like epoxy, polyurethane, or polyethylene protect against corrosion and temperature fluctuations, making them ideal for harsh environments. 3. Insulation jackets: Utilizing pre-fabricated insulation jackets designed to fit over the steel pipes, this method combines insulation materials with a weatherproof outer layer. Insulation jackets are commonly employed for outdoor or exposed pipelines, providing excellent insulation and protection against external elements. 4. Insulation foam: Injecting foam insulation into the space between the steel pipe and an outer casing, the foam expands and hardens to create a sealed and well-insulated layer. Apart from preventing heat loss or gain, foam insulation also offers remarkable soundproofing properties. 5. Insulation tapes: Specially designed insulation tapes made from PVC or rubber, possessing good insulating properties, are wrapped around smaller pipes or joints. This flexible and easy-to-apply solution is commonly employed. When selecting the appropriate method to insulate steel pipes, it is crucial to consider factors such as operating temperature, environmental conditions, and specific application requirements. Seeking advice from a professional or insulation specialist can assist in determining the most suitable insulation method for individual needs.
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Galvanized welded square rectangular tube
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 15 m.t.
- Supply Capability:
- 8000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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