SPIRAL STEEL PIPE 24’‘26‘’ 28‘’ 32‘’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: How does the price of steel pipes vary based on size and grade?
- The price of steel pipes can vary based on their size and grade. Generally, larger pipes tend to have higher prices due to the increased amount of raw materials required for their production. Additionally, pipes with higher-grade steel, which offers better strength and durability, often come at a higher cost compared to lower-grade options. The size and grade of steel pipes are important factors to consider when determining their price in the market.
- Q: How are steel pipes tested for mechanical strength?
- Steel pipes are tested for mechanical strength through various methods such as tensile testing, hydrostatic testing, and non-destructive testing. Tensile testing involves pulling the pipe until it breaks to measure its ultimate tensile strength. Hydrostatic testing involves pressurizing the pipe with water to check its ability to withstand high internal pressures. Non-destructive testing methods like ultrasonic testing or magnetic particle inspection are also used to detect any defects or weaknesses in the pipe without causing damage. These tests ensure that steel pipes are strong enough to withstand the required mechanical stresses.
- Q: What is the difference between seamless steel pipes and seamless stainless steel pipes?
- The main difference between seamless steel pipes and seamless stainless steel pipes lies in their composition. Seamless steel pipes are typically made from carbon steel, which is an alloy of iron and carbon. On the other hand, seamless stainless steel pipes are made from an alloy of iron, carbon, and chromium, which gives them enhanced corrosion resistance and durability. This makes seamless stainless steel pipes suitable for applications where resistance to corrosion is essential, such as in the food industry or in environments with high humidity or exposure to chemicals.
- Q: Can steel pipes be used for sewage treatment plants?
- Yes, steel pipes can be used for sewage treatment plants. Steel pipes are commonly used in sewage treatment plants due to their durability, strength, and resistance to corrosion. They are suitable for transporting sewage, wastewater, and other fluids in these facilities.
- Q: What are the different types of steel pipe couplings?
- There are several different types of steel pipe couplings available in the market, each designed to suit specific applications and requirements. Some of the most common types include: 1. Threaded Coupling: This type of coupling has threaded ends that allow for easy installation and removal. It is commonly used for low-pressure applications and can be used with both threaded and non-threaded pipes. 2. Compression Coupling: Compression couplings are designed to provide a secure and leak-proof connection between two pipes. They consist of two pieces that are tightened together using compression nuts or sleeves, creating a tight seal. 3. Slip-On Coupling: A slip-on coupling is a simple and easy-to-install option that slides onto the pipe ends and is secured in place using welding or bolting. It is commonly used for joining pipes with plain ends and is suitable for both high and low-pressure applications. 4. Grooved Coupling: Grooved couplings have a groove on both pipe ends, which allows them to be connected using a rubber gasket and coupling housing. This type of coupling provides a reliable and flexible connection that can compensate for minor misalignments and vibrations. 5. Flanged Coupling: Flanged couplings consist of two flanges that are bolted together, sandwiching a gasket between them. This type of coupling is commonly used for high-pressure applications and is known for its strength and reliability. 6. Welded Coupling: Welded couplings are permanently joined to the pipe ends using a welding process. This type of coupling provides a strong and durable connection that is resistant to leaks and vibrations. These are just a few examples of the different types of steel pipe couplings available. The choice of coupling depends on factors such as the type of pipe, application requirements, and the desired level of strength and flexibility. It is important to select the appropriate coupling to ensure a secure and reliable connection between pipes.
- Q: How do steel pipes handle soil movement?
- Steel pipes are highly resistant to soil movement due to their strength and durability. The rigid nature of steel pipes allows them to withstand ground shifting and settling without deforming or breaking. Additionally, steel pipes are often installed with proper anchoring and support systems to further enhance their ability to handle soil movement.
- Q: Are steel pipes suitable for HVAC systems?
- Indeed, steel pipes prove to be a suitable option for HVAC systems. HVAC applications widely favor steel pipes due to their numerous advantages. Initially, their robustness and durability enable them to endure the high pressure and temperature requirements commonly associated with HVAC systems. Furthermore, steel pipes exhibit exceptional resistance to corrosion, rendering them suitable for both indoor and outdoor installations. Moreover, their extended lifespan significantly reduces the need for frequent replacements or repairs. Additionally, the availability of steel pipes in various sizes and thicknesses facilitates effortless customization and installation. Lastly, steel pipes offer a cost-effective solution for HVAC systems compared to alternative materials, making them a financially efficient choice. In conclusion, steel pipes emerge as a reliable and appropriate selection for HVAC systems due to their strength, durability, corrosion resistance, availability, and cost-effectiveness.
- Q: What are the different methods of joining steel pipes together?
- There are multiple techniques for connecting steel pipes, each with its own pros and cons. 1. Welding, the most commonly used method, involves heating and applying pressure to fuse the pipe ends. This creates a robust joint, but it necessitates skilled labor and specialized equipment. 2. Threaded connections involve threading the ends and using fittings to connect the pipes. This method is relatively simple and quick, but it may not be as strong as welding and can be prone to leakage if not sealed properly. 3. Flanged connections involve using flanges and bolts to connect the pipes. This allows for easy disassembly and reassembly, making it suitable for applications that require frequent maintenance. Flanged connections are also highly resistant to leakage. 4. Compression fittings involve compressing a ring or ferrule onto the pipe to create a tight seal. This method is straightforward and does not require heat or welding, making it ideal for applications where heat or sparks are prohibited. 5. Grooved connections involve cutting grooves into the pipe ends and using mechanical couplings to secure them. This method is fast, reliable, and allows for easy assembly and disassembly. Grooved connections are commonly used in fire protection systems. 6. Brazing, similar to welding, involves heating the pipe ends and adding filler material to join them. This method is often used for smaller diameter pipes and provides a strong joint, but it requires a high-temperature torch and skilled labor. Each method has its own advantages and is suitable for different applications. The choice of joining method depends on factors such as required strength, ease of installation, maintenance requirements, and pipe type.
- Q: The plastic pipe and steel pipe difference
- In the plastic coated galvanized steel pipe inside the plastic coated manufacturing method. The thickness of the internal plastic is thin, which is equal to a plastic skin.
- Q: What are the applications of steel pipes?
- Steel pipes are widely used in various industries and applications due to their exceptional strength, durability, and versatility. Some common applications of steel pipes include transportation of fluids and gases in oil and gas industry, water supply and drainage systems, structural support in construction projects, plumbing and heating systems, manufacturing of automobiles and machinery, and in the agricultural sector for irrigation and irrigation systems. Additionally, steel pipes are also used in the energy and power generation sector, chemical processing plants, and for underground and underwater installations.
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SPIRAL STEEL PIPE 24’‘26‘’ 28‘’ 32‘’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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