• LSAW WELDED STEEL TUBE System 1
  • LSAW WELDED STEEL TUBE System 2
LSAW WELDED STEEL TUBE

LSAW WELDED STEEL TUBE

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Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
-
Supply Capability:
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Product Description:

1Structure of Welded Steel Tube: 

Welded Steel Tube is formed by drawing a solid billet over a piercing rod to create the hollow shell. We are company that have many years experience and professional manager team and engineer team and sales team, sure we will provide you high quality of welded pipe and professioanl service.

 

2‍‍Main Features of the Welded Steel Tube:

• High manufacturing accuracy

• The higher strength

• The small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Satisfy price 

 

3Welded 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. 

 

4Packaging & Delivery

Packaging   Details:

seaworthy   package,bundles wrapped with strong steel strip

Delivery   Detail:

15-30days   after received 30%TT

 

5FAQ of Welded Steel Tube:  

How is the quality of your products?
   We test on every pipe before delivery. Our products are strictly in accordance with international and domestic standard.Guaranteed: If products’ quality is not in accordance with description as we provide or the promise before you place order, we promise 100% refund.

How about the price?
    Yes, we are factory and be capable of offering you the lowest price. One of our policy is that “ to save time and be absolutely honest with our business relationship, we quote as low as possible for every client, and discount can be given according to the quantity”, if you are interested in bargain and dissatisfy our factory price, just don’t waste your time. Our quotation is professional.

Why should you choose us?
    Choice happens because of our quality and price.  Our service formula: good quality + good price + good service=customer’s trust.

 

6‍‍ Welded Steel Tube Images

 

 

 

Q: What is the difference between internal and external coating for steel pipes?
A protective layer is applied to the inner surface of steel pipes, which is known as internal coating. The main purpose of this coating is to prevent corrosion and enhance resistance against chemicals present in the fluid being transported. Techniques like spraying, brushing, or dipping are commonly used to apply the internal coating, and it can be made of materials such as epoxy, polyurethane, or cement mortar. On the contrary, external coating involves the application of a protective layer on the outer surface of steel pipes. The main objective of this coating is to protect against environmental factors like corrosion, abrasion, and impact. External coatings are usually applied through methods like wrapping or coating with materials such as polyethylene, fusion-bonded epoxy, or asphalt enamel. To summarize, the primary difference between internal and external coating for steel pipes lies in their location and purpose. Internal coatings safeguard the inner surface from corrosion and chemical attacks, while external coatings provide protection against environmental damage on the outer surface. Both types of coatings are essential to ensure the durability and reliability of steel pipes in various applications.
Q: What are the advantages of using pre-fabricated steel pipes?
There are several advantages of using pre-fabricated steel pipes in various applications. Firstly, pre-fabricated steel pipes offer a high level of durability and strength. Steel is known for its robustness and resistance to external forces, making it an ideal material for constructing pipes that need to withstand high pressure or heavy loads. This durability ensures that pre-fabricated steel pipes have a longer lifespan compared to other materials, reducing the need for frequent replacements and maintenance. Secondly, pre-fabricated steel pipes provide excellent corrosion resistance. Steel pipes are often coated with protective layers, such as galvanization or epoxy, which prevent rusting and corrosion. This corrosion resistance is particularly crucial when the pipes are used in industries or environments where they may come into contact with moisture, chemicals, or other corrosive substances. By utilizing pre-fabricated steel pipes, the risk of leaks, deterioration, or failure due to corrosion is significantly reduced. Another advantage of pre-fabricated steel pipes is their versatility and ease of installation. These pipes are manufactured to precise specifications before being delivered to the site, allowing for quick and efficient installation. Their modular nature means that they can be easily assembled, disassembled, and reconfigured as needed, making them suitable for a wide range of applications, from industrial settings to residential construction. Moreover, pre-fabricated steel pipes can be easily integrated with other building components, such as fittings, valves, and connectors, ensuring a seamless connection and reducing installation time and costs. Furthermore, pre-fabricated steel pipes are more environmentally friendly compared to other materials. Steel is a highly recyclable material, and using pre-fabricated pipes reduces the consumption of natural resources and energy required for their production. Additionally, the long lifespan of steel pipes reduces waste generation and the need for frequent replacements, further contributing to sustainability efforts. Lastly, pre-fabricated steel pipes offer cost advantages. While the initial cost of steel pipes may be higher than some other materials, their durability and low maintenance requirements result in long-term cost savings. The reduced need for repairs, replacements, and maintenance, as well as the ease of installation, translates into lower overall project costs and reduced downtime. In summary, the advantages of using pre-fabricated steel pipes include durability, corrosion resistance, versatility, ease of installation, environmental friendliness, and cost-effectiveness. These benefits make pre-fabricated steel pipes a preferred choice for various industries and applications.
Q: Stainless steel tube, also known as why tube?
According to the end of the pipe can be divided into light pipe and wire tubeThe tube can be divided into ordinary tube and special thread tube
Q: What does "DN25 PN16" mean?
DN is nominal diameter, nominal diameter (or nominal diameter), that is, all kinds of pipe and pipe accessories of universal caliber. The same nominal diameter of the tube and pipe accessories can connect with each other, with interchangeability. It is not a real sense of the pipe diameter or diameter, although its value is closer with the pipe diameter or equivalent; in order to make the tube, pipe connection size uniform, with nominal diameter (also called nominal diameter, nominal diameter).
Q: What are the specifications for steel pipes used in high-pressure applications?
The specifications for steel pipes used in high-pressure applications typically include factors such as high tensile strength, corrosion resistance, and the ability to withstand extreme temperatures and pressures. These pipes are usually made from alloy or carbon steel with specific dimensional requirements, such as minimum wall thickness and diameter, to ensure their durability and safety under high-pressure conditions. Additionally, they may need to comply with industry standards and regulations, such as ASTM or ASME specifications, to ensure their quality and suitability for high-pressure applications.
Q: How do you calculate the pressure drop in a steel pipe?
To calculate the pressure drop in a steel pipe, you need to consider several factors such as the diameter and length of the pipe, the flow rate of the fluid, and the properties of the fluid itself. One commonly used equation to calculate the pressure drop in a pipe is the Darcy-Weisbach equation, which is given as: ΔP = (f * (L / D) * (ρ * V^2)) / (2 * D) Where: ΔP is the pressure drop in the pipe f is the Darcy friction factor, which depends on the pipe roughness and Reynolds number L is the length of the pipe D is the diameter of the pipe ρ is the density of the fluid V is the velocity of the fluid To calculate the Darcy friction factor, you can use different methods depending on the flow regime. For laminar flow, you can use the formula f = 16 / Re, where Re is the Reynolds number. For turbulent flow, there are several methods to determine the friction factor, such as the Colebrook equation or the Moody chart. It is important to note that the properties of the fluid, such as its viscosity and density, may vary with temperature and pressure. Therefore, it is necessary to consider these variations when calculating the pressure drop. Additionally, it is worth mentioning that there are other factors that can affect the pressure drop in a steel pipe, such as fittings, valves, and elbows. These factors introduce additional losses, which can be accounted for by using appropriate correction factors or by directly measuring the pressure drop across these components. Overall, calculating the pressure drop in a steel pipe involves using the appropriate equations, considering the properties of the fluid, and accounting for the various factors that may affect the flow. It is recommended to consult relevant engineering handbooks or utilize specialized software for accurate calculations.
Q: Can steel pipes be painted?
Yes, steel pipes can be painted. Painting steel pipes provides protection against corrosion, enhances their aesthetic appearance, and can help them blend with the surrounding environment. Prior to painting, the pipes need to be cleaned, primed, and then coated with a suitable paint designed for metal surfaces.
Q: Is the seamless steel pipe used in the market hot or cold drawn?
Outside diameter 89, most are cold drawn, more than 89 hot rolling.
Q: Welded and seamless steel pipe how to distinguish?
Generally, careful observation, can see traces of the weld seam pipe, further is the determination of the polished incision, and then with the file can be seen there is no clear cut, interface traces with the file cleanup to remove when cutting was pasted interface.
Q: Are steel pipes suitable for potable water systems?
Yes, steel pipes are suitable for potable water systems. They are known for their durability, strength, and resistance to corrosion, making them an excellent choice for transporting and distributing clean drinking water. However, it is important to ensure proper coating and maintenance to prevent any potential contamination or degradation of water quality.

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