• Welded Steel Pipe--The  New  tube  Production System 1
  • Welded Steel Pipe--The  New  tube  Production System 2
Welded Steel Pipe--The  New  tube  Production

Welded Steel Pipe--The New tube Production

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
7000 m.t./month

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1、Structure of Welded Steel Pipe  ASTM SA213/A519:

Welded Steel Pipe is to be used for conveying gas, water, and petroleum foroil and natural gas industries. And used for structural steel pies purpose. 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 Welded Steel Pipe ASTM SA213/A519:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 

 

3、Welded Steel Pipe ASTM SA213/A519: 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 Welded Steel Pipe ASTM SA213/A519:  

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. And we have professional cocoperators and partners and have professional sales team and professional engineering and technology team and professional exportation and contract management team. 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 Steel Pipe ASTM SA213/A519: Images: ‍‍

 

Welded Steel Pipe--The  New  tube  Production

 

 

Q:How are steel pipes tested for quality control?
Steel pipes are tested for quality control through various methods such as visual inspection, non-destructive testing, and physical testing. Visual inspection involves checking the pipes for any visible defects or inconsistencies in their appearance. Non-destructive testing methods like ultrasonic testing, magnetic particle testing, and radiographic testing are used to detect internal flaws or defects without damaging the pipes. Additionally, physical tests like tensile and impact testing are performed to evaluate the mechanical properties of the pipes. These comprehensive testing techniques ensure that steel pipes meet the required quality standards before they are used in various applications.
Q:What is the meaning of "DN" and "Phi" in the dimensioning of steel pipe diameter and how to apply the mark?
DN represents the path of the tube". Fair represents diameter. Path is the diameter of the fluid through which it should be inside. The diameter may be the outer diameter or the inner diameter. The diameter is only used when the pipe is used for flow through. Fair as long as the garden can be used. According to the requirements of mechanical drawing fair, DN text notes.
Q:What is the difference between steel pipe and fiberglass pipe?
Steel pipe and fiberglass pipe are two different types of materials used for piping systems. One major difference between steel pipe and fiberglass pipe is the material they are made of. Steel pipe is made from steel, which is an alloy of iron and carbon. It is known for its strength and durability, making it a popular choice for various applications, including plumbing, construction, and industrial projects. On the other hand, fiberglass pipe is made from glass fibers embedded in a resin matrix. This combination results in a lightweight and corrosion-resistant material, making it suitable for applications where chemical resistance is required, such as in the chemical industry or wastewater treatment plants. Another difference between steel pipe and fiberglass pipe is their flexibility. Steel pipe is known for its rigidity and stiffness, which makes it less flexible than fiberglass pipe. This rigidity can be an advantage in certain applications where stability and strength are crucial, such as underground infrastructure or high-pressure systems. Fiberglass pipe, on the other hand, offers more flexibility, allowing it to bend and conform to different shapes and contours. This flexibility makes it easier to install in tight spaces or areas with complex geometries. Corrosion resistance is another important difference between steel pipe and fiberglass pipe. Steel pipe is susceptible to corrosion, especially in environments with high moisture or chemical exposure. To protect against corrosion, steel pipes are often coated with a layer of protective material or lined with corrosion-resistant coatings. In contrast, fiberglass pipe is inherently corrosion-resistant due to the nature of the materials used in its construction. This makes fiberglass pipe a preferred choice for applications where corrosion is a concern, such as in saltwater environments or chemical processing plants. Cost is another factor that differentiates steel pipe and fiberglass pipe. Steel pipe is generally more affordable than fiberglass pipe, especially for smaller diameter pipes. However, as the diameter and pressure rating increase, the cost of steel pipe can become significantly higher than fiberglass pipe. Additionally, fiberglass pipe requires less maintenance and has a longer lifespan, which can offset the initial cost difference over time. In summary, the main differences between steel pipe and fiberglass pipe lie in the materials they are made of, their flexibility, corrosion resistance, and cost. Steel pipe offers strength and rigidity but is prone to corrosion, while fiberglass pipe is lightweight, flexible, corrosion-resistant, and often more expensive. The choice between these two types of pipes depends on the specific requirements of the project, including factors such as the application, environment, budget, and lifespan expectations.
Q:How are steel pipes coated for protection?
Steel pipes are commonly coated for protection through a process called galvanization. This involves immersing the pipes in a bath of molten zinc, creating a protective layer that prevents corrosion and extends their lifespan. Additionally, other methods such as epoxy coatings or polyethylene wrappings can be used to provide additional protection against external factors.
Q:What does "SC50" steel pipe mean in civil engineering?
SC50: laying on welded steel tubes of diameter 50mm. SC is usually used in electrical installation drawings.
Q:How are steel pipes inspected for defects?
Steel pipes are typically inspected for defects using various non-destructive testing methods such as ultrasonic testing, magnetic particle inspection, and visual inspection. These techniques help identify any cracks, corrosion, or other defects in the pipes, ensuring their structural integrity and quality.
Q:Are steel pipes suitable for use in acidic environments?
No, steel pipes are generally not suitable for use in acidic environments because they are prone to corrosion in such conditions.
Q:How are steel pipes used in firefighting systems?
Steel pipes are commonly used in firefighting systems as they provide durability and resistance to heat, making them ideal for transporting water or fire extinguishing agents. These pipes are used to create a network of water supply lines, sprinkler systems, and hydrants that are crucial for effectively extinguishing fires and controlling their spread.
Q:What are the different types of steel pipe coatings for corrosive environments?
There are several types of steel pipe coatings that are commonly used for corrosive environments. These include fusion bonded epoxy (FBE) coating, three-layer polyethylene (3LPE) coating, three-layer polypropylene (3LPP) coating, and coal tar enamel (CTE) coating. FBE coating provides excellent corrosion resistance and is commonly used for underground pipelines. 3LPE and 3LPP coatings combine a layer of epoxy, an adhesive layer, and a polyethylene or polypropylene outer layer, offering superior protection against corrosion and mechanical damage. CTE coating, although less common nowadays, is still used for certain applications due to its resistance to water and chemical corrosion.
Q:What are the different methods of pipe bending for steel pipes?
There are several methods of pipe bending for steel pipes, each with its own advantages and limitations. 1. Manual Pipe Bending: This method involves using hand tools or a manual pipe bender to bend the steel pipe. It is suitable for small-scale projects or when only a few bends are required. However, it requires skill and precision to ensure accurate and consistent bends. 2. Rotary Draw Bending: This method utilizes a mandrel, clamp die, and a bending die to bend the pipe around a stationary bend die. The mandrel helps to maintain the shape and prevent wrinkling or collapsing of the pipe during the bending process. Rotary draw bending is commonly used for producing tight-radius bends with high accuracy and repeatability. 3. Induction Pipe Bending: In this method, an induction coil is used to heat a specific area of the steel pipe, making it more malleable for bending. Once the desired temperature is reached, the pipe is bent using hydraulic or mechanical force. Induction bending is suitable for large-diameter pipes or when multiple bends are required in a single pipe. 4. Roll Bending: Also known as pyramid rolling, this method involves passing the steel pipe through three adjustable rolls that gradually bend the pipe into the desired shape. Roll bending is suitable for producing large-radius bends and is commonly used in the construction of spiral staircases, handrails, and structural applications. 5. Hot Bending: This method involves heating the steel pipe to high temperatures, typically using a furnace, to facilitate bending. Hot bending allows for greater flexibility in shaping the pipe and is commonly used for large-diameter or thick-walled pipes. However, it requires specialized equipment and expertise to control the temperature and prevent distortion or damage to the pipe. It is important to consider factors such as the required bend radius, pipe diameter, wall thickness, and project specifications when selecting the appropriate method of pipe bending for steel pipes. Consulting with an experienced pipe bending professional or engineer can help determine the most suitable method for a specific application.

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