• Straight Welded Steel Pipe ASME ANSI JIS GB Q195--Q345 System 1
  • Straight Welded Steel Pipe ASME ANSI JIS GB Q195--Q345 System 2
  • Straight Welded Steel Pipe ASME ANSI JIS GB Q195--Q345 System 3
Straight Welded Steel Pipe ASME ANSI JIS GB Q195--Q345

Straight Welded Steel Pipe ASME ANSI JIS GB Q195--Q345

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
20 m.t.
Supply Capability:
15000 m.t./month

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1Structure of Straight Welded Steel Pipe: 

Seamless pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell. 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. 

 

2‍‍Main Features of Straight Welded Steel Pipe:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price  

 

3Straight Welded Steel Pipe 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 Straight Welded Steel 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.

 

6Straight Welded Steel Pipe Images 

 

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Q:How do steel pipes handle seismic activities?
Steel pipes are designed to have high ductility and strength, allowing them to handle seismic activities effectively. The flexibility of steel pipes allows them to absorb and distribute the energy generated during an earthquake, minimizing the risk of structural damage and ensuring the safety of the infrastructure. Additionally, steel pipes can be reinforced with various techniques, such as braces or rubber isolators, to further enhance their seismic resistance.
Q:Can steel pipes be used for underground fuel pipelines?
Yes, steel pipes can be used for underground fuel pipelines. Steel pipes are commonly used for various types of pipelines due to their durability, strength, and resistance to corrosion. When it comes to underground fuel pipelines, steel pipes are a popular choice due to their ability to withstand high pressure and temperature fluctuations. Additionally, steel pipes provide excellent protection against external elements, such as soil movement or chemical reactions, ensuring the safety and integrity of the fuel transportation system. Proper insulation and coating can further enhance the corrosion resistance of steel pipes, making them a reliable option for underground fuel pipelines.
Q:Can steel pipes be used for steam applications?
Yes, steel pipes can be used for steam applications. Steel pipes have high strength and durability, making them suitable for carrying high-pressure steam. They can withstand the high temperatures and pressures associated with steam, making them a reliable choice for steam transportation in various industries.
Q:What are low-pressure carbon steel tubes?
It's pressure levelThe design pressure (P) of pressure vessel is divided into four pressure levels: low voltage, medium pressure, high pressure and extra high pressure:(1) low voltage: Code L, 0.1MPa is less than or equal to p<1.6MPa(2) MP: Code M, 1.6MPa is less than or equal to p<10.0MPa(3) high voltage: Code H, 10.0MPa is less than or equal to p<100.0MPa(4) high voltage: Code U, P = 100.0MPa
Q:Are steel pipes suitable for transporting fluids?
Yes, steel pipes are suitable for transporting fluids. They have high strength and durability, can withstand high pressure and temperature, and are resistant to corrosion, making them ideal for various fluid transportation applications such as oil, gas, water, and sewage.
Q:25 of the steel pipe with 6 in charge of what is the difference?
25 of the steel pipe with 6 in charge of the difference:25 of the steel pipe refers to the DN25 tube, the outer diameter of 25mm; 6, in charge of refers to DN20 steel pipe, the outer diameter is 20mm.
Q:Are steel pipes suitable for industrial cooling systems?
Yes, steel pipes are generally suitable for industrial cooling systems. Steel is a strong and durable material that can withstand high pressure and temperature fluctuations commonly found in cooling systems. It has excellent resistance to corrosion, making it ideal for use with water or other coolants. Additionally, steel pipes have good thermal conductivity, allowing for efficient heat transfer in the cooling process. They are also readily available and cost-effective, making them a popular choice in industrial applications.
Q:What is the difference between steel pipe and PVC conduit?
Steel pipe and PVC conduit serve distinct purposes and possess unique characteristics. The material composition stands as a primary distinction between steel pipe and PVC conduit. Steel pipe consists of robust and enduring materials, typically carbon steel or stainless steel, rendering it sturdy and resistant to impact. Consequently, it finds its utility in heavy-duty applications such as plumbing or structural support. In contrast, PVC conduit is constructed from polyvinyl chloride, a type of plastic. PVC's lightweight, flexibility, and ease of manipulation make it ideal for electrical purposes like safeguarding and directing electrical wires. Resistance to corrosion represents another disparity between the two. Steel pipe exhibits greater resistance to corrosion than PVC conduit, particularly when fortified with protective layers like zinc or epoxy. This makes steel pipe suitable for outdoor applications, subterranean installations, or environments with high moisture or corrosive elements. PVC conduit, while generally resistant to moisture and chemicals, may deteriorate over time when exposed to sunlight and can be harmed by specific chemicals. Consideration of cost becomes another factor. Steel pipe generally incurs greater expenses than PVC conduit due to its material and manufacturing process. Nonetheless, steel pipe's durability and extended lifespan establish it as a cost-effective selection in the long run, particularly for applications necessitating high strength and longevity. On the contrary, PVC conduit is comparatively inexpensive and readily accessible, rendering it a more affordable choice for numerous electrical projects. Lastly, installation methods differ between the two. Steel pipe is typically connected through threaded connections or welded joints, mandating specialized tools and skills. Conversely, PVC conduit can be effortlessly cut, assembled, and connected using PVC cement or fittings. This renders PVC conduit a more DIY-friendly option for electrical installations. In summary, steel pipe and PVC conduit diverge in terms of material composition, resistance to corrosion, cost, and installation methods. Steel pipe boasts strength, durability, and corrosion resistance, making it suitable for rigorous applications. PVC conduit, conversely, possesses lightness, flexibility, and affordability, rendering it ideal for electrical projects.
Q:20# seamless steel pipe and seamless steel pipe 20G what is the difference?
20#: low carbon steel seamless steel pipe, carbon steel is generally divided into low carbon steel, medium carbon steel and high carbon steel three, 45# steel in carbon steel, low carbon steel is lower than 45#, 45# is higher than that of high carbon steel, seamless steel pipe, such as no special requirements, using 20# seamless steel tube. 20# seamless steel pipe material is 20# steel, the strength is slightly higher than 15#, very little quenching, no temper brittleness. Cold plastic deformation and for bending, rolling, bending and hammer arch processing, arc welding and contact welding welding performance is good, when the thickness is small, prone to strict requirement of shape crack or complex shape parts. The cold or normalizing state of the cutting process is better than that of the annealed one. It is generally used to make workpieces with little stress and high toughness.
Q:What are the different methods of pipe inspection for steel pipes?
Steel pipes can be inspected using various methods. Here are some commonly employed techniques: 1. Visual Inspection: Trained inspectors visually examine both the exterior and interior of the pipe to detect any visible defects or abnormalities. This preliminary method is often used before more advanced techniques are applied. 2. Magnetic Particle Inspection (MPI): By applying a magnetic field to the steel pipe and iron particles to its surface, inspectors can identify surface cracks or defects. Leakage of magnetic flux caused by these abnormalities can be detected with this method, which is particularly effective for ferromagnetic materials. 3. Ultrasonic Testing (UT): UT is a non-destructive testing method that utilizes high-frequency sound waves to identify internal defects or anomalies in steel pipes. A transducer sends ultrasonic waves into the pipe, and reflections or echoes of the sound waves are analyzed to determine the presence of defects, such as corrosion, cracks, or variations in wall thickness. 4. Radiographic Testing (RT): This method involves using X-rays or gamma rays to create an image of the internal structure of the steel pipe. The resulting image reveals any defects, such as cracks, corrosion, or weld discontinuities. RT is commonly used for inspecting welded joints. 5. Eddy Current Testing (ECT): ECT is a non-destructive testing technique that utilizes electromagnetic induction to detect surface and near-surface defects in steel pipes. By passing a coil carrying an alternating current over the pipe's surface, any changes in electrical conductivity or magnetic field caused by defects are detected and analyzed. 6. Acoustic Emission Testing (AET): AET involves detecting and analyzing high-frequency acoustic signals emitted by materials undergoing deformation or damage. In the case of steel pipes, AET can monitor and identify defects like cracks, leaks, or corrosion by analyzing the acoustic signals emitted during service or under stress. These methods are just a few examples of commonly used techniques for inspecting steel pipes. The choice of method depends on factors such as the type of defect being sought, accessibility of the pipe, desired sensitivity level, and cost and time constraints. Using a combination of inspection techniques is often recommended to ensure a thorough assessment of steel pipes.

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