• Hot Rolled Seamless Steel pipe Made in China from CNBM System 1
  • Hot Rolled Seamless Steel pipe Made in China from CNBM System 2
  • Hot Rolled Seamless Steel pipe Made in China from CNBM System 3
Hot Rolled Seamless Steel pipe Made in China from CNBM

Hot Rolled Seamless Steel pipe Made in China from CNBM

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
2000000 m.t./month

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1Structure of Hot Rolled Seamless Steel pipe Made in China from CNBM: 

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. 

 

2‍‍Main Features of Hot Rolled Seamless Steel pipe Made in China from CNBM:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price  

 

3Hot Rolled Seamless Steel pipe Made in China from CNBM 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. 

 

 

4Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT

 

5FAQ of Hot Rolled Seamless Steel pipe Made in China from CNBM:  

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.

 

6Hot Rolled Seamless Steel pipe Made in China from CNBM Images ‍‍

 

Hot Rolled Seamless Steel pipe Made in China from CNBM

Hot Rolled Seamless Steel pipe Made in China from CNBM

Hot Rolled Seamless Steel pipe Made in China from CNBM

 

Q:How do you calculate the pipe flow rate coefficient for steel pipes?
To calculate the pipe flow rate coefficient for steel pipes, you need to consider various factors related to the pipe's dimensions, material properties, and the fluid flowing through it. The pipe flow rate coefficient, also known as the discharge coefficient (Cd), is a dimensionless value that represents the efficiency of fluid flow through a pipe. Here are the steps to calculate the pipe flow rate coefficient for steel pipes: 1. Determine the inside diameter (ID) of the steel pipe. This is the measurement of the internal cross-sectional area of the pipe through which the fluid flows. 2. Calculate the pipe's cross-sectional area (A) using the formula: A = π * (ID/2)^2. Here, π is the mathematical constant pi (approximately 3.14). 3. Measure the pressure drop (∆P) across the steel pipe. This is the difference in pressure between the pipe's inlet and outlet. 4. Measure the fluid flow rate (Q) through the pipe. This can be done using flow meters or by measuring the time it takes for a known volume of fluid to pass through the pipe. 5. Calculate the velocity (V) of the fluid flowing through the pipe using the formula: V = Q / A. Here, Q is the fluid flow rate and A is the cross-sectional area of the pipe. 6. Calculate the pipe flow rate coefficient (Cd) using the formula: Cd = Q / (A * √(2 * ∆P / ρ)). Here, ρ is the fluid density. This formula is derived from the Bernoulli's equation and takes into account the pressure drop, fluid flow rate, and fluid density. It is important to note that the pipe flow rate coefficient for steel pipes can vary depending on factors such as pipe roughness, fluid viscosity, and Reynolds number. Therefore, it is advisable to consult relevant engineering standards, such as the Darcy-Weisbach equation or the Hazen-Williams equation, to obtain more accurate values for specific pipe configurations and fluid properties.
Q:How are steel pipes used in the construction of skyscrapers?
Steel pipes are commonly used in the construction of skyscrapers for their strength, durability, and versatility. These pipes are typically used as structural elements, forming the framework of the building, providing support and stability. They are used in the construction of columns, beams, and braces, enabling the building to withstand heavy loads and high winds. Additionally, steel pipes are used for plumbing and mechanical systems, carrying water, gas, and other utilities throughout the building. Their use in skyscrapers ensures the overall strength and integrity of the structure.
Q:What is the role of steel pipes in the chemical manufacturing industry?
Steel pipes play a crucial role in the chemical manufacturing industry as they are widely used for transporting various chemicals, gases, and liquids. These pipes are highly durable, resistant to corrosion, and can withstand high temperatures and pressures, making them ideal for handling hazardous substances. Additionally, steel pipes ensure the integrity and safety of the chemical manufacturing process by preventing leaks, contamination, and loss of product.
Q:What is the difference between schedule 10 and schedule 40 steel pipes?
Schedule 10 and schedule 40 steel pipes find common usage in various industries for different purposes, differing in their wall thickness and pressure ratings. When it comes to wall thickness, schedule 10 pipes possess a slimmer wall in comparison to schedule 40 pipes. This attribute results in schedule 10 pipes having a smaller internal diameter and the ability to withstand lower pressure compared to schedule 40 pipes. While schedule 10 pipes typically have a wall thickness of 0.109 inches, schedule 40 pipes boast a wall thickness of 0.154 inches. The thinner walls of schedule 10 pipes make them ideal for applications with low pressure, such as domestic water supply, drainage systems, and general plumbing. Additionally, they are frequently employed in lightweight structures or where weight is a significant concern. On the other hand, schedule 40 pipes are specifically designed to handle higher pressure and are commonly utilized in industrial settings. These pipes are often found in applications such as oil and gas pipelines, chemical processing plants, and high-pressure fluid systems. The thicker walls of schedule 40 pipes provide them with enhanced strength and durability, enabling them to withstand higher pressure and stress. To summarize, the primary distinction between schedule 10 and schedule 40 steel pipes lies in their wall thickness and pressure ratings. Schedule 10 pipes have a thinner wall and are suitable for low-pressure applications, while schedule 40 pipes possess a thicker wall and can withstand higher pressure. It is crucial to select the appropriate schedule based on the specific requirements and pressure limitations of the intended application.
Q:How do you join two steel pipes together without welding?
There are various ways to join two steel pipes together without welding. Mechanical fittings or connectors are commonly used for this purpose. These fittings are designed to securely connect pipes without the need for welding. Here are a few options you can explore: 1. Threaded Fittings: You can use threaded fittings, which have male and female threads that allow you to screw them together. To join the pipes, you will need to cut the ends of the pipes to create male and female threads. Apply thread sealant to ensure a tight and leak-free connection. 2. Compression Fittings: Another option is compression fittings, which consist of a nut, a compression ring, and a compression seat. These fittings create a tight seal by compressing the ring against the seat. Simply slide the compression ring and nut onto the pipe ends, and use a wrench to tighten the nut until a secure connection is formed. 3. Flange Connections: Flange connections involve using flanges, which are flat plates with bolt holes, to join the pipes. The flanges are bolted together using gaskets to create a tight seal. This method is commonly used for larger diameter pipes or in situations where frequent disassembly may be necessary. 4. Grooved Couplings: Grooved couplings are another option, particularly in plumbing and fire protection systems. They utilize a mechanical coupling housing with two grooved ends that fit over the pipe ends. The coupling is then secured using bolts or screws, which tighten the housing around the pipe ends, creating a secure connection. Before deciding on a method, it is crucial to consider the specific requirements of your application, such as the pipe diameter, pressure, and temperature. Additionally, ensure that the chosen method complies with relevant industry standards and regulations to ensure a safe and reliable connection.
Q:Are steel pipes suitable for use in automotive industries?
Yes, steel pipes are suitable for use in automotive industries. Steel pipes offer high strength, durability, and resistance to corrosion, making them ideal for various applications in the automotive sector, such as exhaust systems, suspension systems, and fuel delivery systems. Steel pipes can withstand high temperatures and pressures, ensuring reliable performance and safety in automotive vehicles.
Q:How are steel pipes used in offshore drilling platforms?
Steel pipes are used in offshore drilling platforms to transport drilling fluids, such as mud and cement, from the drilling rig to the wellbore. These pipes are also used to extract oil and gas from the well by connecting the drilling rig to the subsea wellhead. Additionally, steel pipes provide structural support and stability to the drilling platform, ensuring safe and efficient operations in harsh offshore environments.
Q:Can steel pipes be used for transporting chemicals?
Yes, steel pipes can be used for transporting chemicals. Steel pipes are known for their strength and durability, making them suitable for various applications, including the transportation of chemicals. Additionally, steel pipes are resistant to corrosion, which is crucial when dealing with potentially corrosive substances. However, it is important to ensure that the specific type of steel used in the pipes is compatible with the chemicals being transported to prevent any reactions or contamination.
Q:What are the different types of hangers used for supporting steel pipes?
There are several different types of hangers used for supporting steel pipes, each with its own unique design and purpose. Some of the most common types include: 1. Clevis Hangers: These hangers consist of a U-shaped loop that is attached to a support structure using a threaded rod. The pipe is then placed inside the loop and secured in place with a bolt. Clevis hangers are often used in vertical pipe runs and provide excellent support and stability. 2. Split Ring Hangers: These hangers are designed with a split ring that wraps around the pipe and is attached to a support structure using a threaded rod. Split ring hangers allow for easy installation and adjustment, making them suitable for various pipe sizes and applications. 3. Pipe Clamps: Pipe clamps are simple and versatile hangers that consist of a metal clamp that wraps around the pipe and is secured to a support structure using screws or bolts. These hangers are available in various designs, such as one-hole, two-hole, or cushioned clamps, to accommodate different pipe sizes and provide stability. 4. Beam Clamps: Beam clamps are specifically designed to attach to overhead support beams or structures. They typically feature a clamp that wraps around the beam and a threaded rod or bolt that attaches to the pipe. Beam clamps are suitable for supporting horizontal pipe runs and are commonly used in industrial and commercial settings. 5. Roller Hangers: Roller hangers are used when there is a need for pipe movement due to thermal expansion or contraction. These hangers consist of a roller that allows the pipe to move freely while still providing support. Roller hangers are commonly used in long pipe runs or where there is a significant temperature variation. 6. Spring Hangers: Spring hangers are designed to support pipes and absorb vibrations or shocks. They consist of a spring element that is attached to a support structure and a rod or rod assembly that supports the pipe. Spring hangers are often used in applications where there is a need for noise reduction or to prevent damage caused by vibrations. These are just a few examples of the different types of hangers used for supporting steel pipes. The choice of hanger depends on factors such as pipe size, weight, location, and specific requirements of the installation. Consulting with a professional or engineer is recommended to ensure the appropriate hangers are selected for each specific application.
Q:How do you determine the maximum allowable stress for steel pipes?
In order to establish the maximum allowable stress for steel pipes, several factors must be taken into account. These factors encompass the type of steel, the dimensions of the pipe, and the operating conditions it will be exposed to. To begin with, the type of steel chosen is a pivotal aspect in determining the maximum allowable stress. Different steel grades possess distinct mechanical properties, including yield strength, tensile strength, and elongation. These properties define the steel's capacity to withstand stress before deforming or failing. Hence, it is crucial to comprehend the specific grade of steel employed in the pipes to ascertain the maximum allowable stress. Additionally, the dimensions of the pipe are of utmost importance. The external diameter, wall thickness, and length all impact the pipe's strength and ability to handle stress. By calculating the cross-sectional area and moment of inertia, engineers can evaluate the pipe's resistance to bending and axial stresses. These calculations, combined with the material properties, facilitate the determination of the maximum allowable stress. Finally, the operating conditions under which the pipe will be utilized play a critical role. Variables such as temperature, pressure, and the presence of corrosive substances can significantly influence the maximum allowable stress of a steel pipe. Elevated temperatures can alter the mechanical properties of the steel, while high pressures can induce additional stress. Furthermore, the presence of corrosive substances can lead to material degradation and diminish the pipe's strength. Thus, considering these operational factors is essential when determining the maximum allowable stress. To summarize, the process of establishing the maximum allowable stress for steel pipes entails assessing the specific steel grade, the pipe's dimensions, and the operating conditions. By analyzing these factors, engineers can ensure that the steel pipe is designed and utilized within its safe stress limits.

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