• Longitudinal Submerged Arc Welded Steel Pipe System 1
  • Longitudinal Submerged Arc Welded Steel Pipe System 2
Longitudinal Submerged Arc Welded Steel Pipe

Longitudinal Submerged Arc Welded Steel Pipe

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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?
    Our products are strictly in accordance with international and domestic standard. We test on every pipe before delivery. Any quality certification or testing report you want to see, please tell us.
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. Additionally, we can also offer professional products inquiry, products knowledge train (for agents), fast goods delivery, outstanding 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 OK.

 

6‍‍ Welded Steel Tube Images

 

 

Q: Does seamless steel tube have a bend of 135 degrees?
In engineering, it is usually marked as "45 elbow" and has no "135" mark. The angle of the elbow is acute, so there will be no more than 90 degrees elbow.
Q: Which is more load-bearing, the same thickness of steel pipe and steel bar?
The same length, the same pipe diameter, the same material strength is hollow, the ratio of area of steel (solid), and the cyclical and slender radius smaller than the larger, so the longitudinal stability coefficient is smaller, three factors, two factors are weak in steel reinforced, another factor: strength, they are the same, no doubt, steel reinforced bearing less than.
Q: How do steel pipes handle chemical exposure?
Steel pipes are renowned for their excellent ability to resist exposure to chemicals. The strength and durability of steel make it a dependable material for managing different types of chemicals. Steel pipes can endure contact with a diverse array of corrosive substances like acids, alkalis, solvents, and gases without undergoing significant degradation or damage. One of the primary factors contributing to the effectiveness of steel pipes in handling chemical exposure is their innate resistance to corrosion. Steel naturally resists corrosion and can create a protective oxide layer on its surface, which acts as a barrier against chemical attack. Additionally, steel pipes can be coated or lined with materials that have corrosion-resistant properties, such as epoxy, polyethylene, or cement, to offer additional defense against aggressive chemicals. Furthermore, steel pipes find widespread use in industrial settings where they encounter various chemicals. They are extensively employed in chemical plants, refineries, water treatment facilities, and other industries that require the transportation or storage of chemicals. Steel pipes can withstand the high pressures and temperatures associated with these processes while retaining their structural integrity and resistance to chemicals. However, it is important to acknowledge that the resistance of steel pipes to chemical exposure may vary depending on the specific type and concentration of the chemical. Certain highly corrosive substances may necessitate additional measures, such as specialized coatings or alloys, to ensure long-term protection. In conclusion, steel pipes are generally well-suited for managing chemical exposure due to their inherent resistance to corrosion, durability, and versatility. Their capability to endure a wide range of corrosive substances makes them a trustworthy choice for diverse industrial applications involving the transportation and storage of chemicals.
Q: What is the thermal conductivity of steel pipes?
The specific type of steel used and its composition can cause variations in the thermal conductivity of steel pipes. On average, the thermal conductivity of steel pipes ranges between 50-60 watts per meter-kelvin (W/mK). This indicates that steel pipes possess a relatively high ability to conduct heat, facilitating efficient thermal energy transfer. Given their high thermal conductivity, steel pipes find suitability in numerous applications such as heating systems, industrial processes, and infrastructure projects where heat transfer plays a crucial role.
Q: What is the fatigue strength of steel pipes?
The fatigue strength of steel pipes refers to their ability to withstand repeated cyclic loading without experiencing failure. It is a critical characteristic for pipes that are subject to dynamic or fluctuating loads, such as those used in the oil and gas industry, transportation infrastructure, or industrial applications. The fatigue strength of steel pipes can vary depending on several factors, including the steel grade, pipe dimensions, manufacturing process, surface conditions, and environmental factors. Steel pipes with higher tensile strength and toughness generally exhibit better fatigue resistance. The fatigue strength is typically determined through fatigue testing, which involves subjecting the pipes to cyclic loading until failure occurs. The results are then used to establish a fatigue curve or S-N curve, which represents the relationship between the applied stress amplitude and the number of cycles to failure. The fatigue strength is commonly expressed as the stress amplitude required to cause failure after a specific number of cycles, such as the stress amplitude at 10 million cycles (S-N10^7). It is important to note that fatigue strength is influenced by other factors, such as mean stress, surface finish, and loading frequency, which may need to be considered in specific applications. Overall, the fatigue strength of steel pipes is a crucial factor to consider in engineering design and maintenance, as it helps ensure the long-term integrity and reliability of the pipes under cyclic loading conditions.
Q: What are the different methods of insulation for steel pipes?
There are several methods of insulation for steel pipes, including thermal insulation, such as fiberglass or mineral wool wraps, foam insulation, such as polyurethane or polyethylene foam, and reflective insulation, like foil-faced insulation. Each method has its own advantages and is chosen based on factors such as the intended use, temperature range, and desired level of insulation.
Q: What is the role of steel pipe manufacturers in sustainable development?
The role of steel pipe manufacturers in sustainable development is to promote environmental responsibility and resource efficiency throughout the production process. They play a crucial role in reducing carbon emissions by adopting cleaner technologies, optimizing energy consumption, and implementing waste management strategies. Additionally, steel pipe manufacturers can contribute to sustainable development by prioritizing the use of recycled materials, supporting recycling initiatives, and ensuring their products have a long lifespan to minimize waste generation. By embracing sustainable practices, steel pipe manufacturers can help create a more sustainable future for the construction and infrastructure industries.
Q: Can steel pipes be used for underground sewage treatment plants?
Yes, steel pipes can indeed be used for underground sewage treatment plants. Steel pipes are commonly used in underground applications due to their durability, strength, and resistance to corrosion. They are capable of withstanding the harsh underground environment and can efficiently transport sewage from one area to another within the treatment plant. Moreover, steel pipes can be customized to meet the specific requirements of the sewage treatment plant, such as different diameters and wall thicknesses, ensuring proper flow and drainage. Additionally, steel pipes can be coated or lined with protective materials to enhance corrosion resistance, further extending their lifespan. Overall, steel pipes are a reliable and suitable choice for underground sewage treatment plants.
Q: How can steel pipes be protected from corrosion?
There are several methods available to protect steel pipes from corrosion. One commonly used method is the application of protective coatings, which create a barrier between the steel and the corrosive elements in the environment. Epoxy is the most widely used coating for steel pipes and offers excellent corrosion resistance. Depending on the specific requirements, polyethylene and polyurethane coatings can also be used. Another effective way to prevent corrosion is through cathodic protection. This technique involves using sacrificial anodes or impressed current systems. Sacrificial anodes, typically made of zinc or aluminum, are attached to the steel pipes and corrode instead of the steel, sacrificing themselves to protect the pipes. Impressed current systems utilize a direct electrical current to counteract the corrosion process. To ensure the longevity of steel pipes, regular maintenance and inspection are crucial. It is important to monitor the condition of the coatings and address any signs of damage or deterioration promptly. Additionally, implementing proper drainage systems to prevent the accumulation of moisture around the pipes is essential for corrosion prevention. Consideration of environmental factors is also necessary when protecting steel pipes from corrosion. This involves mitigating exposure to corrosive substances like acids or chemicals and ensuring adequate ventilation and airflow to prevent moisture and humidity buildup. By implementing a combination of these protective measures, steel pipes can have an extended lifespan and maintain their structural integrity.
Q: What are the common challenges faced during steel pipe installation?
Some common challenges faced during steel pipe installation include obtaining accurate measurements and ensuring proper alignment, dealing with obstructions or difficult terrain, managing the weight and size of the pipes, ensuring proper sealing and connections, and adhering to safety regulations and protocols.

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