• The water used for large diameter welded pipe System 1
  • The water used for large diameter welded pipe System 2
  • The water used for large diameter welded pipe System 3
  • The water used for large diameter welded pipe System 4
The water used for large diameter welded pipe

The water used for large diameter welded pipe

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
30 m.t.
Supply Capability:
6000 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

Grade

MPa

MPa

Yield strength

Tensile Strength

API SPEC 5L

PSL1

B

≥241

≥414

×42

≥290

≥414

×46

≥317

≥434

×52

≥359

≥455

×56

≥386

≥490

×60

≥414

≥517

×65

≥448

≥531

×70

≥483

≥565

PSL2

 

Min

Max

Min

Max

B

241

448

441

758

×42

290

496

414

758

×46

317

524

434

758

×52

359

531

455

758

×56

386

544

490

758

×60

414

565

517

758

×65

448

600

531

758

×70

483

621

565

758

Chemical Composition(%)

 

Standard

Grade

C

Mn

P

S

CEV

Max

Max

Max

Max

Max

PSL1

 

-

B

0.26

1.2

0.030

0.030

×42

0.26

1.3

0.030

0.030

×46,×52,×56X60

0.26

1.4

0.030

0.030

X65

0.26

1.45

0.030

0.030

X70

0.26

1.65

0.030

0.030

PSL2

 

 

0.43

B

0.22

1.20

0.025

0.015

1) Material: Grade:API 5L GR.B, X40, X42, X52, X56, X60, X65, X70.ST37/37-2,ST33,ST35.8,ST35.4.GB 9711.1/SY5037/GB3092

2) Specification range: OD: 406.4MM-1422MM (16”-56”)

Thickness: 8MM-50.8MM depends on OD

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 

The water used for large diameter welded pipeThe water used for large diameter welded pipe

 

 

 

 

Q: What are the different methods of repairing damaged steel pipes?
There are several methods for repairing damaged steel pipes, including welding, epoxy coatings, pipe wrapping, and pipe lining. Welding involves fusing the damaged sections of the pipe using heat and specialized equipment. Epoxy coatings are applied to the damaged area to create a protective layer and restore the pipe's integrity. Pipe wrapping involves applying specialized tapes or wraps around the damaged area to provide structural support. Pipe lining involves inserting a new pipe into the damaged one, creating a seamless and durable solution. The appropriate method depends on the extent and location of the damage, as well as other factors such as cost and time constraints.
Q: What is the thermal conductivity of steel pipes?
The thermal conductivity of steel pipes can vary depending on the specific type of steel used and its composition. However, on average, the thermal conductivity of steel pipes is around 50-60 watts per meter-kelvin (W/mK). This means that steel pipes are relatively good conductors of heat, allowing for efficient transfer of thermal energy. The high thermal conductivity of steel pipes makes them suitable for various applications, including heating systems, industrial processes, and infrastructure projects where heat transfer is essential.
Q: How big is the seamless steel tube of DN50?
DN refers to the nominal diameter, the outer diameter is 60.3mm
Q: How are steel pipes used in the automotive exhaust systems?
Steel pipes are commonly used in automotive exhaust systems because steel is a durable and heat-resistant material. Steel pipes are used to transport the exhaust gases from the engine to the muffler and tailpipe, ensuring that the gases are safely and efficiently expelled from the vehicle. These pipes are designed to withstand high temperatures, corrosion, and vibration, making them an essential component in the exhaust system.
Q: What are the different methods of bending steel pipes?
There are several methods of bending steel pipes, including manual bending, rotary draw bending, mandrel bending, and hydraulic pipe bending.
Q: What are steel pipes made of?
Steel pipes are made of a strong and durable alloy known as steel, which is primarily composed of iron and carbon, along with small amounts of other elements such as manganese, silicon, and sulfur.
Q: What are the different methods of pipe repair for steel pipes?
There are several methods for repairing steel pipes, including spot repair, slip lining, pipe bursting, and pipe relining. Spot repair involves cutting out and replacing a small section of the damaged pipe. Slip lining involves inserting a smaller diameter pipe into the existing pipe to reinforce it. Pipe bursting involves breaking the old pipe while simultaneously installing a new one. Pipe relining involves inserting a liner into the damaged pipe and then curing it in place to create a new, seamless pipe within the existing one. The choice of method depends on the extent and location of the damage, as well as budget and time constraints.
Q: What are the environmental impacts of using steel pipes?
The environmental impacts of using steel pipes include the extraction and processing of raw materials, such as iron ore and coal, which contribute to deforestation, habitat destruction, and greenhouse gas emissions. The manufacturing process also generates significant amounts of waste, including slag and emissions from steel production. The transportation and installation of steel pipes contribute to carbon emissions, while their corrosion and maintenance may result in the release of toxic substances into the environment. Proper waste management and implementing sustainable practices can help mitigate some of these impacts.
Q: What are the different standards for steel pipe manufacturing?
There are several different standards for steel pipe manufacturing, including ASTM (American Society for Testing and Materials), ASME (American Society of Mechanical Engineers), API (American Petroleum Institute), and DIN (Deutsches Institut für Normung). These standards provide specifications for various aspects of steel pipe production, such as dimensions, chemical composition, mechanical properties, and testing procedures. Compliance with these standards ensures the quality and reliability of steel pipes for different applications and industries.
Q: How do steel pipes handle seismic activities?
Steel pipes are highly durable and flexible, making them well-suited for handling seismic activities. The inherent strength and elasticity of steel allow the pipes to withstand ground movements during earthquakes without fracturing or collapsing. Additionally, steel pipes can absorb and distribute seismic forces throughout their structure, reducing the risk of damage or failure.

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