• Steel Pipe --Welded Steel Pipe of various materials System 1
  • Steel Pipe --Welded Steel Pipe of various materials System 2
Steel Pipe --Welded Steel Pipe of various materials

Steel Pipe --Welded Steel Pipe of various materials

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
35 m.t.
Supply Capability:
8000 m.t./month

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1、Structure of Steel Pipe --Welded Steel Pipe of various materials

Welded Steel Pipe is to be used for conveying gas, water, and petroleum foroil and natural gas industries. And used for structural steel pies purpose. 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.

 

2、‍‍Main Features of Steel Pipe --Welded Steel Pipe of various materials

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 

 

3、Steel Pipe --Welded Steel Pipe of various materials: 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. 

 

4、Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT

 

5、FAQ of Steel Pipe --Welded Steel Pipe of various materials:  

①How 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.

②How 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.

③Why 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.

 

6、‍‍Steel Pipe --Welded Steel Pipe of various materials: Images: ‍‍

 

 Steel Pipe --Welded Steel Pipe of various materials

Q: How are steel pipes protected against rusting?
Steel pipes are protected against rusting through various methods such as galvanization, applying protective coatings, or utilizing corrosion-resistant alloys.
Q: What is the difference between carbon steel and cast iron pipes?
Carbon steel and cast iron pipes are both widely used in various industries for different applications. The main difference between these two types of pipes lies in their composition and properties. 1. Composition: Carbon steel pipes are primarily made of iron and carbon, with trace amounts of other elements such as manganese, phosphorus, and sulfur. On the other hand, cast iron pipes are made by melting iron and adding a small amount of carbon, usually between 2-4%. 2. Strength and Durability: Carbon steel pipes are generally stronger and more durable than cast iron pipes. Carbon steel has a higher tensile strength, which means it can withstand higher pressures and is less likely to be damaged or deformed. Cast iron, although strong, is more brittle and prone to cracking. 3. Corrosion Resistance: Carbon steel pipes require additional coatings or treatments to protect them from corrosion. Without proper protection, carbon steel pipes can be susceptible to rust and corrosion, especially when exposed to moisture or aggressive substances. On the other hand, cast iron pipes have inherent corrosion resistance due to the formation of a protective layer of iron oxide (rust) on their surface. 4. Weight and Installation: Cast iron pipes are typically heavier than carbon steel pipes, making them more challenging to handle and install. Carbon steel pipes are comparatively lighter, allowing for easier transportation and installation. 5. Noise and Vibration: Cast iron pipes have superior sound-deadening properties, making them quieter when fluids flow through them. On the contrary, carbon steel pipes tend to transmit more noise and vibrations. 6. Cost: Cast iron pipes are generally more expensive than carbon steel pipes due to the additional manufacturing processes and the higher cost of raw materials. In summary, the main differences between carbon steel and cast iron pipes lie in their composition, strength, corrosion resistance, weight, noise transmission, and cost. The choice between the two depends on the specific application, budget, and environmental factors.
Q: What are the different types of joints used with steel pipes?
Steel pipes commonly use several types of joints, depending on the specific application and requirements. Some of the most frequently used types are as follows: 1. Butt Joint: This type of joint is the most basic, involving the alignment and welding of two pipes at their ends. It creates a strong and continuous connection, but reinforcement may be necessary depending on the pipe's size and pressure rating. 2. Socket Weld Joint: Smaller diameter pipes often utilize this joint, where one pipe is inserted into the socket of another and then welded together. It provides good strength and resistance against leaks. 3. Threaded Joint: A threaded joint involves screwing together two pipes with threaded ends. It is commonly used in low-pressure applications and necessitates the use of pipe threads and sealants for a tight and leak-free connection. 4. Flanged Joint: In high-pressure applications, a flanged joint connects two pipes by bolting together flanges at their ends. This type of joint allows for easy disconnection and maintenance. 5. Grooved Joint: A grooved coupling is placed around the ends of two pipes in a grooved joint, which is then secured with bolts. This joint is commonly used in fire protection systems due to its quick installation and easy maintenance. 6. Welded Joint: A welded joint involves fusing two pipes together using various welding techniques like GTAW or GMAW. It provides a strong and permanent connection but requires skilled labor and additional equipment. Each type of joint has its own advantages and limitations, and the selection depends on factors such as pipe size, pressure rating, application, and installation requirements. Choosing the appropriate joint is crucial to ensure the integrity and reliability of the steel pipe system.
Q: Can steel pipes be used for electrical conduits?
No, steel pipes are not suitable for use as electrical conduits. Electrical conduits are typically made of materials such as PVC (polyvinyl chloride) or metal conduits specifically designed for electrical applications.
Q: What is the difference between cast iron and steel pipes?
The main difference between cast iron and steel pipes lies in their composition and manufacturing process. Cast iron pipes are made from a strong, durable material that consists primarily of iron, carbon, and silicon. They are cast in molds and have a thick, heavy wall. Steel pipes, on the other hand, are made from an alloy of iron and carbon, usually with smaller amounts of other elements. They are manufactured using various methods, such as seamless or welded, and can have different wall thicknesses depending on their intended use. In summary, cast iron pipes are heavier and more brittle, while steel pipes are lighter and more flexible, making them suitable for different applications.
Q: Can steel pipes be used for signposts or street lighting poles?
Yes, steel pipes can be used for signposts or street lighting poles. Steel pipes are commonly used in construction due to their strength, durability, and resistance to various environmental conditions. They provide a sturdy and reliable support structure for signposts and street lighting poles, ensuring their stability and longevity.
Q: How are steel pipes protected against ultraviolet (UV) radiation?
Steel pipes are typically protected against ultraviolet (UV) radiation through the application of specialized coatings or paints that act as a barrier, preventing direct exposure of the steel to UV rays. These coatings are designed to withstand UV degradation, prevent corrosion, and extend the lifespan of the pipes.
Q: How do steel pipes handle high-velocity flow?
Steel pipes are highly capable of handling high-velocity flow due to their inherent strength and durability. The robustness of steel allows it to withstand the pressure exerted by the high-velocity flow, minimizing the risk of deformation or failure. Additionally, steel pipes have smooth interiors, which reduces frictional losses and ensures efficient flow rates even at high velocities.
Q: Are steel pipes suitable for underground sewage systems?
Indeed, underground sewage systems can be effectively served by steel pipes. Renowned for their robustness, longevity, and ability to resist corrosion, steel pipes emerge as the perfect selection for subterranean installations. By withstanding the immense pressure and weight of the soil above them, these pipes guarantee the integrity of the sewage system. Furthermore, steel pipes boast an extended lifespan and exhibit exceptional resistance to extreme temperatures and environmental adversities, rendering them a dependable choice for subterranean purposes. Nevertheless, it is crucial to acknowledge that a suitable coating and insulation must be diligently applied to steel pipes to safeguard against corrosion and secure their longevity.
Q: Can steel pipes be used for structural purposes?
Yes, steel pipes can be used for structural purposes. They are often used in construction projects to create strong and durable building frameworks, as well as in various engineering applications where load-bearing capacity is required.

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