• Welded ERW Steel Pipe Q235 System 1
  • Welded ERW Steel Pipe Q235 System 2
Welded ERW Steel Pipe Q235

Welded ERW Steel Pipe Q235

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Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
35 m.t.
Supply Capability:
12000 m.t./month

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1Structure of Welded Black ERW Steel Pipe:

ERW steel pipe is electric resistance welding, the abbreviation for ERW for transporting oil and natural gas vapor liquid objects, can meet the requirements of high and low pressure, the transport in the world with pipe sector accounted for a pivotal position.

 

2‍‍Main Features of Welded Black ERW Steel Pipe:

• High manufacturing accuracy

• High strength

• Good visual effect

• Reasonable price 

• Small inertia resistance

• Strong heat dissipation ability

 

3Welded Black ERW Steel Pipe 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: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 Welded Black ERW Steel Pipe: 

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 Welded Black ERW Steel Pipe Images ‍‍

Q:Can steel pipes be used for scaffolding and support structures?
Indeed, scaffolding and support structures can make use of steel pipes. Due to their robustness, longevity, and ability to bear substantial loads, steel pipes are commonly employed in the construction industry. They establish a steady and secure framework for scaffolding and support structures, guaranteeing the safety of workers and the stability of the construction undertaking. Moreover, steel pipes possess versatility, enabling convenient assembly and disassembly, rendering them a superb option for temporary structures such as scaffolding. Furthermore, steel pipes exhibit resistance to corrosion, rendering them appropriate for outdoor applications and ensuring the enduring existence of the scaffolding and support structures.
Q:How are steel pipes used in data centers?
Steel pipes are used in data centers for the installation of cooling systems, electrical wiring, and network cabling, providing a robust and reliable infrastructure to support the data center's operations.
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 manufacturing of pharmaceutical equipment?
Steel pipes are commonly used in the manufacturing of pharmaceutical equipment due to their durability, corrosion resistance, and ability to withstand high-pressure conditions. These pipes are utilized for various purposes such as transporting fluids, gases, and chemicals within the pharmaceutical production process. They provide a reliable and hygienic method for transferring raw materials, intermediates, and final products. Additionally, steel pipes are often used in the construction of cleanrooms and sterile environments, ensuring the safe and efficient operation of pharmaceutical equipment.
Q:How are steel pipes used in stadium construction?
Steel pipes are used in stadium construction for various purposes, including the structural framework, support for seating systems, and the installation of plumbing and electrical systems.
Q:What is the role of steel pipes in the food processing industry?
Steel pipes play a crucial role in the food processing industry by providing a reliable and hygienic means of transporting various fluids, such as water, gases, and food products. These pipes are resistant to corrosion and can withstand high temperatures and pressures, ensuring the safety and efficiency of food processing operations. They are used for conveying ingredients, cleaning agents, steam, and other necessary fluids, maintaining the integrity and quality of food products throughout the manufacturing process.
Q:Can steel pipes be used for natural gas processing plants?
Yes, steel pipes can be used for natural gas processing plants. Steel pipes are commonly used in the oil and gas industry due to their high strength, durability, and resistance to corrosion. They can safely transport natural gas and are capable of withstanding the high pressure and temperature conditions typically found in processing plants.
Q:How do you calculate the pipe volume flow rate for steel pipes?
The pipe volume flow rate for steel pipes can be calculated using the formula: V = A * V_avg, where V is the volume flow rate, A is the cross-sectional area of the pipe, and V_avg is the average velocity of the fluid flowing through the pipe.
Q:What are the typical lengths of steel pipes?
The typical lengths of steel pipes vary depending on the industry and application. However, common lengths for steel pipes range from 18 to 40 feet.
Q:What is the difference between API 5L and ASTM A106 steel pipes?
API 5L and ASTM A106 steel pipes are both widely used in the oil and gas industry, but they have some key differences. API 5L is a specification for seamless and welded steel pipes used for pipeline transportation systems in the petroleum and natural gas industries. It covers various grades of carbon and alloy steel pipes, with different strength levels and impact requirements. API 5L pipes are designed for conveying fluids, such as oil, gas, and water, over long distances. On the other hand, ASTM A106 is a specification for seamless carbon steel pipes used for high-temperature service. It covers seamless pipes for pressure and mechanical applications, including transportation of fluids and gases in industries like refineries, power plants, and boilers. While both API 5L and ASTM A106 pipes are used in similar applications, the main difference lies in their intended use and the specific requirements they must meet. API 5L pipes are primarily used for pipeline transportation systems, whereas ASTM A106 pipes are more focused on high-temperature service applications. Additionally, the manufacturing processes and testing requirements for both specifications may vary.

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