• Square tube in a variety of hot buildings System 1
  • Square tube in a variety of hot buildings System 2
Square tube in a variety of hot buildings

Square tube in a variety of hot buildings

Ref Price:
get latest price
Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
15 m.t.
Supply Capability:
10000 m.t./month

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Specification

Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring
Shape:
Square,Rectangular
Surface Treatment:
Galvanized,Oiled,Black
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,SS400-SS490,10#
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Thickness:
0-30mm
Length:
3m-12m
Net Weight:
0-5

 

1Structure of    Square tube in a variety of hot buildings 

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.

 

2‍‍Main Features of    Square tube in a variety of hot buildings :

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 

 

3 Selling a variety of  Square tube in a variety of hot buildings 

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. 

 

 

4Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT

 

5FAQ of    Square tube in a variety of hot buildings :  

How 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.

How 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.

Why 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 tube in a variety of hot buildings  ‍‍

Square tube in a variety of hot buildings

Square tube in a variety of hot buildings

 

 

Q: What is the difference between carbon steel pipes and stainless steel pipes?
The main difference between carbon steel pipes and stainless steel pipes lies in their composition. Carbon steel pipes are primarily made of iron and carbon, while stainless steel pipes contain iron, carbon, and a minimum of 10.5% chromium. This high chromium content in stainless steel pipes provides excellent corrosion resistance, making them suitable for various applications in industries like food processing, chemical, and oil & gas. On the other hand, carbon steel pipes are more cost-effective and have higher strength than stainless steel pipes, but they are more susceptible to corrosion and thus require regular maintenance and coating for protection.
Q: What are the factors that affect the pressure rating of steel pipes?
There are several factors that can affect the pressure rating of steel pipes. These include the material and grade of the steel used, the wall thickness of the pipe, the diameter of the pipe, the temperature at which the pipe will be operating, and the type of fluid or gas being transported through the pipe. Additionally, factors such as corrosion, external loads, and installation methods can also impact the pressure rating of steel pipes.
Q: How are steel pipes used in LNG terminals?
Steel pipes are used in LNG terminals for various purposes, including the transportation and storage of liquefied natural gas. These pipes are responsible for conveying the LNG from the storage tanks to the regasification units, where it is converted back into its gaseous state for distribution. Steel pipes are preferred for this application due to their strength, durability, and ability to withstand extreme temperatures and pressures. Additionally, these pipes are used for the safe transfer of other fluids and gases within the LNG terminal infrastructure.
Q: Can steel pipes be used for conveying compressed air?
Yes, steel pipes can be used for conveying compressed air. Steel pipes are known for their high strength and durability, making them suitable for handling high-pressure applications such as compressed air systems. Additionally, steel pipes are resistant to corrosion and can withstand extreme temperatures, making them a reliable choice for conveying compressed air.
Q: Can steel pipes be used for oil refinery applications?
Yes, steel pipes can be used for oil refinery applications. Steel pipes offer many advantages for oil refinery applications including high strength, durability, and resistance to corrosion. They are able to withstand high pressure and temperature conditions that are common in oil refinery operations. Steel pipes are also easy to transport and install, making them a popular choice for oil refinery projects. Additionally, steel pipes can be customized to meet specific requirements such as size, thickness, and coating, making them suitable for a wide range of oil refinery applications.
Q: What is the difference between hot-dip galvanizing and electroplating for steel pipes?
Hot-dip galvanizing and electroplating are both methods used to protect steel pipes from corrosion, but they differ in the process and the properties of the resulting coating. Hot-dip galvanizing involves immersing the steel pipe in a bath of molten zinc, which forms a thick and durable coating that bonds metallurgically with the steel. This provides excellent corrosion resistance and protection even in harsh environments. On the other hand, electroplating involves the deposition of a thin layer of zinc onto the steel pipe using an electric current. While electroplating also offers corrosion protection, the coating is typically thinner and less durable than hot-dip galvanizing. Hot-dip galvanizing is typically preferred for steel pipes that require long-lasting protection, while electroplating may be suitable for applications where a thinner coating is sufficient.
Q: How do you calculate the pressure drop in a steel pipe?
When determining the pressure decrease in a steel pipe, various factors need to be taken into account. These factors include the pipe's diameter and length, the fluid's flow rate, and the fluid's properties. One commonly utilized equation for calculating the pressure drop in a pipe is the Darcy-Weisbach equation. This equation is as follows: ΔP = (f * (L / D) * (ρ * V^2)) / (2 * D) In this equation: - ΔP represents the pressure drop in the pipe - f denotes the Darcy friction factor, which relies on the pipe's roughness and Reynolds number - L refers to the pipe's length - D represents the pipe's diameter - ρ signifies the fluid's density - V indicates the fluid's velocity To compute the Darcy friction factor, different methods can be employed depending on the flow regime. For laminar flow, the formula f = 16 / Re can be utilized, where Re represents the Reynolds number. For turbulent flow, the friction factor can be determined using various methods, such as the Colebrook equation or the Moody chart. It should be noted that the fluid's properties, such as viscosity and density, may vary with temperature and pressure. Thus, considering these variations is crucial when calculating the pressure drop. Moreover, it is important to acknowledge that additional factors, including fittings, valves, and elbows, can impact the pressure drop in a steel pipe. These factors introduce extra losses, which can be accounted for by employing appropriate correction factors or directly measuring the pressure drop across these components. Overall, calculating the pressure drop in a steel pipe necessitates the use of suitable equations, taking into account the fluid's properties, and considering the various factors that can influence the flow. It is advisable to consult relevant engineering handbooks or employ specialized software for accurate calculations.
Q: How are steel pipes insulated?
Steel pipes are commonly insulated using a variety of materials such as fiberglass, mineral wool, or foam insulation. These insulating materials are typically wrapped around the steel pipes to prevent heat loss or gain, as well as to protect against corrosion and condensation. Additionally, a vapor barrier may be applied to further enhance the insulation performance.
Q: What quota is reserved for buried DN20 steel pipe?
It is an embedded sleeve control sub item, if the reserved hole, then there is no need to cover, special subject structure adjustment factor of the cost of the water supply and drainage engineering, water supply and drainage engineering he is buried under the charge.
Q: What is the difference between seamless and welded steel pipes?
The main difference between seamless and welded steel pipes lies in their manufacturing process. Seamless steel pipes are made by piercing a solid billet to form a hollow tube, while welded steel pipes are formed by rolling a flat sheet of steel into a tube and then welding the seam. This difference in manufacturing leads to varying characteristics such as strength, appearance, and cost. Seamless pipes are generally considered to have higher strength and are more aesthetically pleasing, but they are also more expensive to produce. Welded pipes, on the other hand, are more cost-effective and suitable for less demanding applications.

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