• Large diameter longitudinal submerged arc welded pipe materials System 1
  • Large diameter longitudinal submerged arc welded pipe materials System 2
  • Large diameter longitudinal submerged arc welded pipe materials System 3
Large diameter longitudinal submerged arc welded pipe materials

Large diameter longitudinal submerged arc welded pipe materials

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

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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 have many years business experience in this area, and we have professional engineer and manager team and sure we can provide you high quality production and professional service.

How about price?
    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?
    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.

 

6‍‍ Welded Steel Tube Images

 

 

 

Q:How to distinguish between steel pipe and spiral pipe material?
The alloy tube can be divided into: low alloy pipe, alloy pipe structure, high alloy tube, high strength tube. Bearing tube, heat resistant acid resistant stainless pipe, precision alloy (such as cutting alloy) pipe, high temperature alloy tube, etc..
Q:What are the common protective coatings used on the inner surface of steel pipes?
The common protective coatings used on the inner surface of steel pipes include epoxy, polyurethane, and cement mortar coatings. These coatings provide corrosion resistance, prevent the formation of scales, and improve the durability and lifespan of the pipes.
Q:What is the abrasion resistance of steel pipes?
The abrasion resistance of steel pipes is high due to their hardness and durability, making them resistant to wear and tear caused by friction or rubbing against surfaces.
Q:What is the difference between ERW (Electric Resistance Welded) and LSAW (Longitudinal Submerged Arc Welded) steel pipes?
ERW (Electric Resistance Welded) steel pipes are manufactured by passing an electric current through the steel strip or plate to generate heat, which results in the fusion of the edges together to form a pipe. On the other hand, LSAW (Longitudinal Submerged Arc Welded) steel pipes are produced by submerging the steel plate or strip into a molten bath of welding flux and then initiating the welding process. The main difference between ERW and LSAW steel pipes lies in their manufacturing processes and the resulting pipe structure. ERW pipes have a longitudinal seam along their length, created by the fusion of the edges, while LSAW pipes have a single longitudinal seam that is formed by the submerged arc welding process. This difference in welding techniques gives LSAW pipes a higher degree of dimensional accuracy and stability, making them suitable for applications that require precise measurements and strong structural integrity. Additionally, LSAW pipes have a larger diameter range and can be produced in larger sizes compared to ERW pipes. This makes LSAW pipes well-suited for conveying large volumes of fluid or gas, such as in oil and gas pipelines. Conversely, ERW pipes are commonly used in applications that require smaller sizes and lower pressure requirements, such as water supply systems or structural applications. In summary, the main differences between ERW and LSAW steel pipes lie in their manufacturing processes, resulting pipe structure, size capabilities, and applications.
Q:What are the different methods of heat treatment for steel pipes?
There are several methods of heat treatment for steel pipes, including annealing, normalizing, quenching, tempering, and stress relieving.
Q:How do you repair a damaged steel pipe?
To repair a damaged steel pipe, you can follow a few steps. First, identify the extent of the damage, such as cracks or holes. Next, clean the damaged area using a wire brush or sandpaper to remove any rust, debris, or old paint. Then, apply a suitable epoxy or sealing compound to seal the crack or hole. For larger damages, welding or brazing may be necessary. Finally, ensure the repaired area is dry and properly cured before testing the pipe for leaks or further issues.
Q:Can steel pipes be used for underground power transmission?
Yes, steel pipes can be used for underground power transmission. Steel pipes are commonly used in underground power transmission systems due to their durability, strength, and resistance to corrosion. They provide a protective casing for the power cables, ensuring their safety and preventing damage from external factors such as moisture, soil movements, and potential impacts. Steel pipes also allow for easy installation, maintenance, and repair of the power transmission system. Additionally, their ability to withstand high pressure and temperature makes them suitable for carrying the high voltage electricity required for power transmission. Overall, steel pipes are a reliable and efficient choice for underground power transmission.
Q:Can steel pipes be used for underground drainage in acidic soils?
Steel pipes can be used for underground drainage in acidic soils, but it is important to consider certain factors. Acidic soils can cause corrosion in steel pipes, leading to weakening and potential failure over time. To mitigate this risk, it is advisable to use galvanized steel pipes that are treated with a protective coating to resist corrosion. Additionally, regular inspection and maintenance should be carried out to identify and address any signs of corrosion or deterioration. It is also worth considering alternative materials such as PVC or HDPE pipes, which are more resistant to corrosion in acidic environments. Ultimately, the choice of material should be based on a thorough assessment of the soil conditions, the expected lifespan of the drainage system, and the budgetary constraints.
Q:How are steel pipes used in the construction of pipelines?
Steel pipes are commonly used in the construction of pipelines due to their high durability, strength, and ability to withstand high pressure. These pipes are used to transport various fluids, such as oil, gas, and water, over long distances. They are welded together and laid underground or submerged to create a reliable and efficient transportation system for these resources.
Q:Can seamless steel pipe and ordinary steel pipe be welded?
Seamless steel tube branch and seamed two, seamed steel pipe welding is formed, all two can be welded together, if you do not allow the use of seam tube cannot connect.

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