• Many varieties of large diameter longitudinal submerged arc welded Pipe System 1
  • Many varieties of large diameter longitudinal submerged arc welded Pipe System 2
  • Many varieties of large diameter longitudinal submerged arc welded Pipe System 3
Many varieties of large diameter longitudinal submerged arc welded Pipe

Many varieties of large diameter longitudinal submerged arc welded Pipe

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

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Product Description:

 

1.Specification of large diameter longitudinal submerged arc welded pipe:

 

1)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)Application: It is widely applied to line pipe in oil and sewage transportation , and it is used in Low pressure liquid and gassy transportation and it is also good Structure pipe in building and bridge field.

 

3)Standard:ASTM A53,ASTM A671 ,ASTM A672 .ASTM A252  API 5L (PSL-1,PSL-2) ,API 5L 2B ,2H,2W.DIN1626,DIN17175,DIN1629.JISG 3452,JISG3457/3456,JISG3461.GB 9711.1/SY5037/GB3092

 

2.large diameter longitudinal submerged arc welded pipe size:

 

OD: 406.4MM-1422MM (16”-56”)

Thickness: 8MM-50.8MM depends on OD

 

3. Mechanical Properties and Chemical Composition for large diameter longitudinal submerged arc welded pipe:

 

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,×56,X60

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

×42

0.22

1.30

0.025

0.015

×46,×52,×56, X60

0.22

1.40

0.025

0.015

X65

0.22

1.45

0.025

0.015

X70

0.22

1.65

0.025

0.015

 

4. Packing & Delivery for pipes:

 

Packing Detail: bundles with anti-rust painting and with plastic caps

 

Delivery Term: 30 days after receving payment or L/C

 

5. Products pictures for large diameter longitudinal submerged arc welded pipe: 

LSAW carbon welded pipe

carbon LSAW Welded Pipe

LSAW

 

6FAQ of large diameter longitudinal submerged arc welded pipe:

 

How 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.

How 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.

Why 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.

 

Q:What are the advantages of using steel pipes in construction projects?
There are several advantages of using steel pipes in construction projects. Firstly, steel pipes are incredibly strong and durable. They have a high tensile strength, which means they can withstand heavy loads and pressures without deforming or breaking. This makes them ideal for applications where structural integrity is crucial, such as in the construction of buildings, bridges, and infrastructure. Secondly, steel pipes have excellent resistance to corrosion. They are typically coated with protective layers, such as galvanized zinc or epoxy, which prevent rusting and extend their lifespan. This makes steel pipes suitable for both aboveground and underground applications, including water and sewage systems, oil and gas pipelines, and industrial processing plants. Additionally, steel pipes offer great versatility in terms of shape and size. They can be manufactured in various diameters and thicknesses, allowing for customization to meet specific project requirements. This flexibility in design makes steel pipes suitable for a wide range of applications in construction, including plumbing, HVAC systems, and structural supports. Moreover, steel pipes are relatively easy to install and maintain. They can be welded, threaded, or bolted together, providing a secure and leak-proof connection. This ease of installation reduces construction time and labor costs. Furthermore, steel pipes require minimal maintenance, as they are resistant to cracking, chipping, and warping. This makes them a cost-effective choice over the long term. Lastly, steel pipes are environmentally friendly. They are 100% recyclable, meaning they can be reused and repurposed without losing their structural integrity. Recycling steel pipes reduces the need for new raw materials and minimizes waste generation, making them a sustainable option for construction projects. Overall, the advantages of using steel pipes in construction projects include their strength, corrosion resistance, versatility, ease of installation and maintenance, and environmental sustainability. These qualities make steel pipes a reliable and cost-effective choice for a wide range of applications in the construction industry.
Q:Can steel pipes be used for LNG terminals?
Yes, steel pipes can be used for LNG terminals. Steel pipes are commonly used in the construction of infrastructure for LNG terminals due to their strength, durability, and resistance to extreme temperatures. They can effectively handle the high-pressure requirements and the cryogenic temperatures involved in the storage and transportation of liquefied natural gas.
Q:What are the different strategies for pipe laying using steel pipes?
There are several strategies for pipe laying using steel pipes, each suited for different environments and requirements. Here are some of the commonly used strategies: 1. Open Trench: This is the most traditional and widely used method, where a trench is dug along the desired pipeline route. Steel pipes are then laid in the trench, aligned, and welded together. This method allows for easy access, maintenance, and repair of the pipeline. 2. Direct Pipe: This method is used when there are crossings under obstacles such as rivers or highways. It involves drilling a borehole from one side to the other, while simultaneously laying the steel pipe. The pipe is then pulled through the borehole, creating a continuous pipeline. 3. Horizontal Directional Drilling (HDD): HDD is employed when the pipeline needs to be installed under existing infrastructure or environmentally sensitive areas. A pilot hole is drilled horizontally, and the steel pipe is then pulled through the hole using a reaming tool. This technique minimizes disruption to the surface and reduces environmental impact. 4. Sliplining: Sliplining involves inserting a smaller diameter steel pipe into an existing larger pipe. The smaller pipe is pushed or pulled into the larger pipe, providing a new corrosion-resistant lining. This method is commonly used for rehabilitating deteriorated or damaged pipelines. 5. Microtunneling: Microtunneling is similar to HDD, but it involves a microtunnel boring machine (MTBM) that excavates the soil and installs the steel pipe simultaneously. This method is often used for precision pipe laying, especially in urban areas with limited space. 6. Jacking: Jacking, also known as pipe jacking or pipe ramming, is utilized for installing steel pipes in soil conditions that are not suitable for open trenching. This method involves pushing the steel pipe into the ground using hydraulic jacks or pneumatic rams. It is commonly used for crossing under railways, roads, or buildings. 7. Offshore Pipeline Laying: For subsea applications, steel pipes can be laid using a variety of techniques, such as S-lay, J-lay, or reel-lay. These methods involve deploying the pipeline from a vessel, either vertically or at an inclined angle, and welding the steel pipes together as they are lowered to the seabed. Each of these strategies has its own advantages and considerations, depending on factors such as terrain, environmental impact, existing infrastructure, and project requirements. It is important to carefully evaluate these factors and select the most suitable pipe laying strategy to ensure the safe and efficient installation of steel pipes.
Q:What are the different testing methods for steel pipes?
Some of the different testing methods for steel pipes include visual inspection, ultrasonic testing, magnetic particle testing, radiographic testing, and hydrostatic testing.
Q:Can steel pipes be used for transporting sewage?
Yes, steel pipes can be used for transporting sewage. Steel pipes are commonly used in sewage systems due to their durability, strength, and corrosion resistance, making them suitable for carrying wastewater and sewage over long distances.
Q:How are steel pipes used in the infrastructure development?
Steel pipes are widely used in infrastructure development for various purposes such as water supply, sewage systems, gas pipelines, and transportation of oil and natural gas. They provide a durable and efficient solution for the construction of underground and aboveground infrastructure, ensuring the safe and reliable transportation of fluids and gases. Steel pipes are also used in the construction of bridges, buildings, and other structural components, as they offer strength, versatility, and resilience to withstand harsh environmental conditions.
Q:What are the different types of steel pipe connections?
There are several types of steel pipe connections, including threaded connections, welded connections, flanged connections, grooved connections, and compression connections.
Q:What is the production process of seamless steel tube?
The main production process for hot rolling seamless steel tube (the main inspection):Tube preparation and check delta to billet heating, heating, rolling, perforated pipe, steel pipe and heat treatment, diameter (minus) Delta to finished tube straightening, finishing and inspection of delta (nondestructive, physicochemical, Taiwan inspection and warehousing)
Q:How are steel pipes used in the construction of airports?
Steel pipes are commonly used in the construction of airports for various purposes such as the installation of water and sewage systems, electrical conduits, and heating and cooling systems. They are also used as structural elements for supporting canopies, walkways, and other infrastructure, providing durability and stability to the airport's overall construction.
Q:What are the different methods of joining steel pipes?
There are several different methods of joining steel pipes, including welding, threading, flanging, grooving, and using mechanical connectors.

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