• 20# Seamless steel pipe ASTM A106/API 5L/ASTM A106 System 1
  • 20# Seamless steel pipe ASTM A106/API 5L/ASTM A106 System 2
20# Seamless steel pipe ASTM A106/API 5L/ASTM A106

20# Seamless steel pipe ASTM A106/API 5L/ASTM A106

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
9000 m.t./month

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1、Structure of 20# Seamless steel pipe ASTM A106/API 5L/ASTM A106: 

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 20# Seamless steel pipe ASTM A106/API 5L/ASTM A106:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 

 

3、20# Seamless steel pipe ASTM A106/API 5L/ASTM A106 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 20# Seamless steel pipe ASTM A106/API 5L/ASTM A106:  

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.

②Why 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、20# Seamless steel pipe ASTM A106/API 5L/ASTM A106 Images: ‍‍

 

Q:Can steel pipes be used for scaffolding and support structures?
Yes, steel pipes can be used for scaffolding and support structures. Steel pipes are commonly used in construction due to their strength, durability, and ability to withstand heavy loads. They provide a stable and secure framework for scaffolding and support structures, ensuring the safety of workers and the stability of the construction project. Steel pipes are also versatile and can be easily assembled and disassembled, making them an ideal choice for temporary structures like scaffolding. Additionally, steel pipes are resistant to corrosion, making them suitable for outdoor applications and ensuring the longevity of the scaffolding and support structures.
Q:Are steel pipes suitable for transporting fluids?
Yes, steel pipes are suitable for transporting fluids. They have high tensile strength, durability, and resistance to corrosion, making them an ideal choice for transporting various fluids, including water, oil, gas, and chemicals, over long distances. Steel pipes are commonly used in industries such as oil and gas, water treatment, and manufacturing due to their ability to withstand high pressure and temperature conditions.
Q:How do steel pipes handle chemical substances?
Steel pipes are highly resistant to chemical substances due to their durability and corrosion resistance. The smooth interior surface of steel pipes prevents the accumulation of chemical deposits, ensuring minimal reaction with the substances being transported. Additionally, steel pipes can be coated or lined with protective materials to further enhance the resistance against specific chemicals, making them a reliable choice for handling various chemical substances.
Q:What are the different types of steel pipe reducers?
Various industrial applications commonly use different types of steel pipe reducers. These reducers facilitate the connection between pipes of varying sizes, ensuring a smooth transition in fluid or gas flow. The following are some of the most frequently encountered types: 1. Concentric Reducers: These reducers possess a symmetrical design with a centerline that aligns with both the larger and smaller pipes' centerlines. They facilitate a gradual reduction in pipe size, ensuring a seamless material flow. 2. Eccentric Reducers: In contrast to concentric reducers, eccentric reducers have an offset centerline. This design is beneficial in preventing the accumulation of air or gases in the piping system. The eccentric reducer directs any gas or air towards a vent or drain point. 3. Welded Reducers: These reducers are created through the welding of two pipes of different sizes. They are frequently used in situations that require a permanent connection. 4. Seamless Reducers: Seamless reducers are manufactured without any welded joints. They are crafted from a single piece of steel, enhancing their strength and durability. Seamless reducers are often preferred in applications where leak-proof connections are crucial, such as high-pressure or high-temperature environments. 5. Threaded Reducers: These reducers have male and female threads on both ends, allowing for easy installation and removal. They are commonly used in low-pressure applications and are a cost-effective option for systems that require frequent disassembly. 6. Flanged Reducers: Flanged reducers possess flanges on both ends, which are bolted together to create a secure seal. They are frequently used in piping systems that require convenient access for maintenance or inspection. Each type of steel pipe reducer offers its own unique advantages and is selected based on the specific requirements of the application. Factors such as the transported fluid or gas type, pressure and temperature conditions, and the need for easy installation or maintenance should be considered when choosing the appropriate reducer for a particular system.
Q:What is the typical diameter range of steel pipes?
The typical diameter range of steel pipes can vary depending on various factors such as the intended application, industry standards, and specific project requirements. However, in general, steel pipes are available in a wide range of diameters to suit different purposes. Commonly used diameters for steel pipes can range from small diameters of around 0.5 inches (12.7 mm) to larger diameters of several feet or more. This range allows for various applications such as plumbing, oil and gas transportation, structural support, and industrial processes. Ultimately, the specific diameter of a steel pipe will be determined by the specific needs of the project or application at hand.
Q:What is the difference between steel pipes and fiberglass-reinforced pipes?
The main difference between steel pipes and fiberglass-reinforced pipes lies in their composition and structural properties. Steel pipes are made primarily of iron and carbon, which provide high strength and durability. On the other hand, fiberglass-reinforced pipes consist of a composite material that combines a resin matrix with glass fibers, offering excellent corrosion resistance and high tensile strength. Additionally, steel pipes are heavier and require more maintenance, while fiberglass-reinforced pipes are lighter, easier to install, and have a longer lifespan.
Q:How do you repair a damaged steel pipe?
To repair a damaged steel pipe, the first step is to assess the extent of the damage. Once identified, the damaged section can be cut out and replaced with a new piece of pipe. Alternatively, for smaller damages, patches or clamps can be used to cover the affected area. It is essential to clean and prepare the surface properly before applying any repair method, such as welding or epoxy. Seeking professional help is recommended for complex or extensive damages to ensure a safe and effective repair.
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:What are the different methods of pressure testing steel pipes?
There are several methods of pressure testing steel pipes, including hydrostatic testing, pneumatic testing, and ultrasonic testing.
Q:How are steel pipes protected against mechanical damage?
Steel pipes are protected against mechanical damage through various methods such as coating them with corrosion-resistant materials, covering them with protective sleeves or wraps, or installing them in underground or enclosed structures to prevent external impact.

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