SPIRAL STEEL PIPE 34’‘ ASTM API LARGE DIAMETER PIPE
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 3000 m.t./month
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Packaging & Delivery
Packaging Detail: | standard export packing or as customer's requirement |
Delivery Detail: | within 10 - 30 days |
Specifications
Spiral Welded Steel Pipes and Tubes
1.Material:Q195-Q235
2.Length:1-12m
3.WT:1.0-14mm
4.O.D.:20-273mm
Spiral Welded Steel Pipes and Tubes
Product Description:
1.Material : Q235,Q345,L245,L290,L360,L415,L450,L485,GrB,X42,46,X52,X56,X60,X65,X70,X80,X100
2,Standard: SY/T5037-2000,GB/T9711-2011,API Spec 5L PSL1/PSL2,ASTM A252\A53,ISO3183,DIN17172,EN10217,JIS G3457,AWWA C200,ASTM A139,ASTM A671,ASTM A672
3.Wall thickness: 3.0mm-30mm
4.Outer diameter: φ168mm-3020mm
5,Length: 5m-12m or as your requirement
6,Corrosion protection standard: DIN30670,DIN30671, AWWAC210, AWWA C203, SY/T0413-2002,SY/T0414-2002
7,Application: Oil, gas, natural gas, water pipe, thermal electricity pipe, steel structure engineering, etc
Q195-q345 Material Steel Pipe's Materials
Elements | Chemical Compsition% | Mechanical Property | ||||||
C% | Mn% | S% | P% | Si% | Yield Point (Mpa) | Tensile Strength(Mpa) | Elongation | |
Q195 | 0.06-0.12 | 0.25-0.50 | <0.050< span=""> | <0.045< span=""> | <0.030< span=""> | >195 | 315-430 | 32-33 |
Q215 | 0.09-0.15 | 0.25-0.55 | <0.05< span=""> | <0.045< span=""> | <0.030< span=""> | >215 | 335-450 | 26-31 |
Q235 | 0.12-0.20 | 0.30-0.70 | <0.045< span=""> | <0.045< span=""> | <0.030< span=""> | >235 | 375-500 | 24-26 |
Q345 | <0.20< span=""> | 1.0-1.6 | <0.040< span=""> | <0.040< span=""> | <0.55< span=""> | >345 | 470-630 | 21-22 |
- Q:What is the cost of steel pipes compared to other materials?
- The cost of steel pipes is generally higher compared to other materials due to its durability, strength, and versatility. However, it provides excellent long-term value and is often preferred for its reliability and resistance to corrosion, making it a worthwhile investment for various applications.
- Q:How long is the seamless tube?
- Seamless steel tube specification: 8-1240 * 1-200mm
- Q:What is the difference between hot-dipped galvanized and electro-galvanized steel pipes?
- Hot-dipped galvanized and electro-galvanized steel pipes are both types of steel pipes that have undergone a galvanization process to protect them from corrosion. However, there are some key differences between the two processes. Hot-dipped galvanized steel pipes are immersed in a molten zinc bath, which results in a thick coating of zinc being applied to the surface of the steel. This process creates a durable and long-lasting corrosion-resistant barrier. The thickness of the zinc coating can vary, but it is generally thicker than that of electro-galvanized steel pipes. On the other hand, electro-galvanized steel pipes are coated with a thin layer of zinc using an electroplating process. This process involves passing an electric current through the steel pipes while they are immersed in a zinc solution. The zinc particles are then deposited onto the surface of the steel, creating a thin and uniform protective barrier. One of the main differences between these two processes is the thickness of the zinc coating. Hot-dipped galvanized steel pipes have a thicker and more robust coating, making them more suitable for applications in harsh environments or where the pipes will be exposed to corrosive substances. Another difference is the appearance of the pipes. Hot-dipped galvanized steel pipes typically have a dull grayish finish, while electro-galvanized steel pipes have a smoother and more polished appearance. In terms of cost, electro-galvanized steel pipes are generally more economical compared to hot-dipped galvanized steel pipes. This is because the electroplating process is less labor-intensive and requires less zinc. Overall, the choice between hot-dipped galvanized and electro-galvanized steel pipes depends on the specific application and the level of corrosion resistance required. Hot-dipped galvanized steel pipes are typically used in more demanding environments, while electro-galvanized steel pipes are suitable for less corrosive applications where cost-efficiency is a priority.
- Q:What are the different types of coatings applied to steel pipes?
- There are several types of coatings that can be applied to steel pipes, including epoxy, polyethylene, fusion bonded epoxy (FBE), and zinc coatings. These coatings provide protection against corrosion, abrasion, and chemical damage, ensuring the longevity and durability of the steel pipes in various applications.
- Q:Are steel pipes suitable for potable water applications?
- Yes, steel pipes are suitable for potable water applications. Steel pipes are commonly used for transporting water in various industries and municipal water systems. They are known for their durability, strength, and resistance to corrosion, making them a reliable choice for potable water systems. Steel pipes also have the advantage of being able to withstand high pressure and temperature conditions, making them suitable for both hot and cold water applications. Additionally, steel pipes can be easily welded, ensuring leak-free connections. However, it is important to note that the quality of the steel used and proper maintenance are crucial factors in ensuring the safety and suitability of steel pipes for potable water applications. Regular inspection and maintenance should be done to prevent corrosion and ensure the integrity of the pipes.
- Q:What is the difference between steel pipe and aluminum pipe?
- Steel pipes and aluminum pipes differ primarily in their composition and physical properties. Steel pipes are composed of iron and carbon, with added elements for strength and corrosion resistance. In contrast, aluminum pipes are made entirely of lightweight and highly corrosion-resistant aluminum. The weight of the pipes is a significant distinction. Steel is denser than aluminum, making steel pipes heavier and more robust. This characteristic makes steel pipes ideal for applications requiring structural strength and load-bearing capabilities. On the other hand, aluminum pipes offer advantages due to their lightweight nature. They weigh only about one-third of steel pipes, making them easier to handle, transport, and install. This lightweight property is especially beneficial in industries such as aerospace and automotive, where weight reduction is crucial. Corrosion resistance is another important consideration. Steel pipes are prone to rust and corrosion, especially in moist or corrosive environments. To address this issue, steel pipes are often coated or galvanized. In contrast, aluminum pipes naturally resist corrosion due to the formation of a protective layer of aluminum oxide on their surface. Cost is also a factor to consider. Generally, steel pipes are more cost-effective due to lower raw material and manufacturing costs. However, long-term maintenance costs and lifespan may vary between steel and aluminum pipes, so specific requirements and durability should be taken into account. In conclusion, the difference between steel and aluminum pipes lies in their weight, strength, corrosion resistance, and cost. Steel pipes are heavier, stronger, and more prone to rust and corrosion but are generally more cost-effective. Aluminum pipes are lightweight, corrosion-resistant, and costlier but offer advantages in weight reduction and specific applications requiring corrosion resistance. The choice between steel and aluminum pipes depends on the project's needs and desired properties for optimal performance.
- Q:What is the theoretical weight per square meter of the steel pipe diameter of the outer frame and the thickness of the tube wall 3mm 48mm?
- Dimensions of ordinary steel tubes (taken from GB/T 17395-1998)The theory of weight / (kg/m) | wall thickness (2.9 3.0mm: 3.33)
- Q:What are the different types of steel pipe coatings for marine applications?
- There are several types of steel pipe coatings commonly used for marine applications, including epoxy coatings, polyurethane coatings, and fusion bonded epoxy (FBE) coatings. These coatings are designed to protect the steel pipe from corrosion and provide resistance to marine environments. Epoxy coatings are known for their excellent adhesion and chemical resistance, while polyurethane coatings offer enhanced abrasion resistance. FBE coatings are highly durable and provide excellent corrosion protection. The choice of coating depends on the specific requirements of the marine application and the level of protection needed.
- Q:Can steel pipes be used for underground fuel storage tanks?
- Underground fuel storage tanks can indeed utilize steel pipes. These pipes find wide application in various fields, including underground fuel storage tanks. Their strength, durability, and resistance to corrosion enable them to serve as suitable long-term storage options for fuels like gasoline, diesel, and oil. Moreover, the weldability of steel pipes allows for the creation of seamless and secure tank structures. Nevertheless, it is crucial to ensure that the steel pipes employed in underground fuel storage tanks are appropriately coated with corrosion-resistant materials. This precautionary measure shields the pipes from potential damage that may arise due to exposure to moisture or the chemicals present in the fuel. Consistent inspection and maintenance procedures are also imperative to uphold the tank's integrity and avert leaks or environmental hazards.
- Q:How are steel pipes coated to prevent external corrosion?
- Steel pipes are commonly coated to prevent external corrosion through various methods such as galvanization, epoxy coating, or polyethylene wrapping. These coatings act as barriers between the steel surface and the external environment, protecting the pipes from moisture, chemicals, and other corrosive elements.
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SPIRAL STEEL PIPE 34’‘ ASTM API LARGE DIAMETER PIPE
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 3000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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