• Seamless steel tube in hot sale System 1
  • Seamless steel tube in hot sale System 2
  • Seamless steel tube in hot sale System 3
Seamless steel tube in hot sale

Seamless steel tube in hot sale

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
6000 m.t./month

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1、Structure of Seamless steel tube: 

Seamless pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell. As the manufacturing process does not include any welding, seamless pipes are perceived to be stronger and more reliable. Historically seamless pipe was regarded as withstanding pressure better than other types, and was often more easily available than welded pipe.

 

2、‍‍Main Features of the Seamless steel tube:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 

 

3、Seamless steel tube Specification:

Standard

GB, DIN, ASTM

ASTM A106-2006, ASTM A53-2007

Grade

10#-45#, 16Mn

10#, 20#, 45#, 16Mn

Thickness

8 - 33 mm

Section Shape

Round

Outer Diameter

133 - 219 mm

Place of Origin

Shandong, 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:20#(ASTM A 106/A53 GRB.API5LGRB,GB),45#,16Mn,10#.

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: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 Seamless steel 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、Seamless steel tube Images:

Q:Can steel pipes be used for flagpoles?
Yes, steel pipes can be used for flagpoles. Steel pipes are often used for flagpoles due to their strength, durability, and ability to withstand harsh weather conditions. They can be easily fabricated to the desired height and thickness, making them suitable for flags of various sizes. Additionally, steel pipes can be painted or coated to prevent corrosion and enhance their aesthetic appeal.
Q:Can steel pipes be used for air conditioning systems?
Yes, steel pipes can be used for air conditioning systems. Steel pipes are commonly used in HVAC (Heating, Ventilation, and Air Conditioning) systems as they are durable, can withstand high pressures, and are resistant to corrosion.
Q:What are the common factors affecting the flow capacity of steel pipes?
There are several common factors that can affect the flow capacity of steel pipes. 1. Pipe Diameter: The diameter of the pipe is one of the most significant factors affecting flow capacity. The larger the diameter, the greater the flow capacity as there is more area for the fluid to pass through. 2. Pipe Length: The length of the pipe also plays a role in flow capacity. Longer pipes generally have higher frictional losses, which can reduce the flow capacity. 3. Surface Roughness: The internal surface roughness of the steel pipe can impact flow capacity. Rough surfaces create more friction, which can reduce the flow rate. Smooth pipes, on the other hand, allow for smoother flow and higher flow capacity. 4. Fluid Properties: The properties of the fluid being transported through the steel pipe can affect flow capacity. Factors such as viscosity, temperature, and density can impact the flow rate. For example, highly viscous fluids will have lower flow capacity compared to less viscous fluids. 5. Pressure Drop: Pressure drop along the length of the pipe is another factor that affects flow capacity. As fluid flows through the pipe, there may be pressure losses due to friction, bends, or restrictions. Higher pressure drops result in lower flow capacity. 6. Pipe Material and Wall Thickness: The material of the steel pipe and its wall thickness can influence flow capacity. Different materials have different properties that can affect flow rates. Additionally, thicker walls can reduce the internal diameter of the pipe, resulting in lower flow capacity. 7. Pipe Layout and Fittings: The design and layout of the pipe system, including the presence of fittings such as valves, elbows, and tees, can impact flow capacity. These fittings can cause additional pressure drops and turbulence, reducing the overall flow rate. It is important to consider these factors when designing or evaluating a steel pipe system to ensure optimal flow capacity and efficiency.
Q:What is the difference between steel pipe and round steel?
Widely used in the manufacture of structural and mechanical parts, such as oil drilling pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction. Making ring parts with steel tubes can improve data application rate, simplify manufacturing process, save data and work hours, such as rolling bearings, rings, Jack sleeves, etc., and have been widely used in steel pipe manufacture.
Q:How are steel pipes used in fire protection systems?
Steel pipes are an integral part of fire protection systems, primarily used for the distribution of water or other fire suppressants in buildings. These pipes are known for their strength, durability, and resistance to high temperatures, making them ideal for withstanding the intense conditions of a fire. In fire protection systems, steel pipes are commonly used to create a network of pipes that deliver water to sprinkler heads or fire hydrants throughout a building. This network ensures that water is readily available to suppress or extinguish a fire in case of an emergency. One of the key advantages of steel pipes in fire protection systems is their ability to withstand the high pressure and flow rates required for effective fire suppression. Steel pipes can handle the forceful water flow needed to quickly and efficiently distribute water to the affected areas, helping to control and extinguish the fire as soon as possible. Additionally, steel pipes are resistant to corrosion, which is essential for maintaining the integrity of the fire protection system over time. Corrosion can weaken pipes, leading to leaks or even complete failure, which can be catastrophic in a fire situation. Steel pipes, however, have a longer lifespan and require less maintenance compared to other pipe materials, ensuring the system remains reliable and functional for years to come. Furthermore, steel pipes are often used in fire protection systems due to their fire resistance properties. Steel is inherently fire-resistant, meaning it can withstand high temperatures without deforming or losing its structural integrity. This is crucial in fire protection systems as it allows the pipes to remain intact and continue delivering water even in the midst of a fire, ensuring the safety of occupants and minimizing damage to the building. In summary, steel pipes play a vital role in fire protection systems by ensuring a reliable and efficient distribution of water or fire suppressants. Their strength, durability, resistance to high temperatures, and corrosion resistance make them an ideal choice for effectively combating fires and safeguarding lives and property.
Q:How do you repair a damaged steel pipe?
To repair a damaged steel pipe, the first step is to identify the extent of the damage. If the damage is minor, it can be fixed using a pipe repair clamp or a stainless-steel wrap. For larger damages, a cut and replace method may be necessary, where the damaged section is cut out and replaced with a new piece of pipe. In some cases, welding or soldering techniques may be required. It is important to consult with a professional plumber or pipe repair specialist to ensure the correct repair method is used for the specific situation.
Q:How do you calculate the thermal expansion of steel pipes?
In order to determine the thermal expansion of steel pipes, it is necessary to utilize the coefficient of thermal expansion (CTE) specific to steel. The CTE represents the extent to which a material expands or contracts in response to temperature fluctuations. Typically, the average value of CTE for steel is around 12 x 10^-6 per degree Celsius (12 μm/m°C). To calculate the thermal expansion of a steel pipe, one must possess knowledge of the pipe's initial length (L0), the temperature change (ΔT), and the CTE for steel. The formula for calculating thermal expansion is as follows: ΔL = L0 * CTE * ΔT In this equation: ΔL denotes the alteration in length of the steel pipe L0 represents the initial length of the steel pipe CTE signifies the coefficient of thermal expansion for steel ΔT indicates the change in temperature For instance, suppose there is a steel pipe with an initial length of 2 meters (L0), and the temperature rises by 50 degrees Celsius (ΔT). The CTE for steel is 12 x 10^-6 per degree Celsius. ΔL = 2m * 12 x 10^-6/°C * 50°C ΔL = 0.00024m/m°C * 50°C ΔL = 0.012m Thus, when the temperature increases by 50 degrees Celsius, the steel pipe will expand by 0.012 meters or 12 millimeters. It is important to bear in mind that this calculation assumes linear expansion, which is applicable for minor temperature variations. However, for larger temperature differences or more intricate pipe systems, a more comprehensive analysis may be necessary to consider factors such as the material properties, geometry, and thermal boundary conditions of the pipes.
Q:How is the steel pipe dance installed at home?
According to international competition practice, the standard size of steel tube is 40 mm or 45 mm in diameter, and the 45mm is usually used. The height of the steel pipe is not less than 3.3 meters and not higher than 4 meters. The steel pipe fittings used in the pipe dance are made of smooth surface material, usually chrome or polished by steel or iron.
Q:What are the safety precautions while working with steel pipes?
Some safety precautions while working with steel pipes include wearing appropriate personal protective equipment such as gloves, safety glasses, and steel-toed boots to prevent injuries. It is important to ensure the work area is clear of any obstacles or tripping hazards. Workers should be trained in proper lifting techniques to prevent strain or back injuries. Additionally, it is crucial to follow proper procedures for handling and storing steel pipes to prevent accidents and maintain a safe working environment.
Q:Are there specifications for scaffold steel pipe with 48mm * 3.2mm?
Previously used steel pipe GB 51*3.0mm, the latest national standard JGJ130-2001 stipulates that the use of steel pipe for construction projects need to be 48*3.5mm specifications, the wall thickness should be 3.5mm square for qualified products.

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