SPIRAL STEEL PIPE 24’‘ 26’‘ 28’‘ 32’‘ 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 dimensional stability of steel pipes?
- The dimensional stability of steel pipes refers to their ability to retain their shape and dimensions under various conditions and external forces. Steel pipes are known for their excellent dimensional stability due to the inherent properties of the material. Steel is a strong and rigid material, which allows it to maintain its shape even under high pressure or changes in temperature. This makes steel pipes highly suitable for applications that require stability and resistance to deformation, such as in plumbing, oil and gas pipelines, and structural supports. In addition to its inherent strength, steel pipes also exhibit dimensional stability due to their manufacturing processes. Steel pipes are typically produced through methods like seamless or welded construction, which ensures their uniformity and consistent dimensions throughout the length of the pipe. This manufacturing precision contributes to the dimensional stability of steel pipes. Moreover, steel pipes are often treated with various protective coatings to enhance their resistance to environmental factors. These coatings, such as galvanization or epoxy coatings, not only protect against corrosion but also help maintain the dimensional stability of the pipes by providing an additional layer of strength and durability. Overall, the dimensional stability of steel pipes is one of the key reasons for their widespread use in different industries. Their ability to maintain their shape and dimensions, even under challenging conditions, ensures reliable and long-lasting performance in various applications.
- Q: ASME seamless tube how to express, what is the form, I did not find on the ASME, thank God!
- Welded and seamless pipe standards are ASME B31.10, no go, if you want to force a seamless tube, the request can be seamless for seamless meaning.In addition to that, the cost and difficulty of manufacturing welded pipe is higher than that of seamless tube.
- Q: How are steel pipes protected against lightning strikes?
- Steel pipes are protected against lightning strikes by installing lightning rods or grounding systems near the pipes. These systems provide a path of least resistance for lightning to follow, diverting the electrical current away from the pipes and minimizing the risk of damage or explosions.
- Q: What are the different types of steel pipe supports for thermal expansion?
- There are several types of steel pipe supports for thermal expansion, including fixed supports, sliding supports, and variable spring supports. Fixed supports are rigid and do not allow for movement, while sliding supports allow for limited axial movement. Variable spring supports use mechanical springs to accommodate thermal expansion and contraction, providing continuous support while allowing for movement.
- Q: Can steel pipes be used for oil refinery applications?
- Yes, steel pipes can be used for oil refinery applications. Steel pipes offer many advantages for oil refinery applications including high strength, durability, and resistance to corrosion. They are able to withstand high pressure and temperature conditions that are common in oil refinery operations. Steel pipes are also easy to transport and install, making them a popular choice for oil refinery projects. Additionally, steel pipes can be customized to meet specific requirements such as size, thickness, and coating, making them suitable for a wide range of oil refinery applications.
- Q: How are steel pipes repaired in case of damage or leaks?
- Steel pipes are repaired in case of damage or leaks by first identifying the affected area. The damaged section is then cut out, and a new piece of steel pipe is welded or bolted in its place. This ensures a secure and watertight connection, restoring the integrity of the pipe and preventing further leaks or structural issues.
- Q: How do you calculate the pipe buoyancy for steel pipes in water?
- In order to determine the buoyancy of steel pipes in water, one must take into account the weight of the water displaced by the submerged part of the pipe. This can be achieved by applying Archimedes' principle, which states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object. Firstly, the volume of the submerged portion of the pipe needs to be calculated. This can be accomplished by multiplying the cross-sectional area of the pipe by the length of the submerged part. Next, the density of the water surrounding the pipe must be determined. Typically, this value is approximately 1000 kg/m³ for freshwater and slightly higher for seawater. To find the weight of the water displaced, multiply the volume of the submerged portion of the pipe by the density of the water. Lastly, compare the weight of the water displaced to the weight of the steel pipe. If the weight of the water displaced is greater than that of the pipe, the pipe will exhibit buoyancy and tend to float. Conversely, if the weight of the pipe is greater, it will sink. It is worth noting that factors such as pipe design, wall thickness, and external forces acting upon the pipe may also impact its buoyancy. Therefore, it is advisable to consult industry-specific guidelines or seek professional advice for precise calculations in specific scenarios.
- Q: What are the advantages of using steel pipes in construction?
- There are several advantages of using steel pipes in construction. Firstly, steel pipes are incredibly strong and durable, providing excellent structural integrity and long-term reliability. They can withstand high pressure and heavy loads, making them suitable for various applications such as water and gas transportation, oil pipelines, and building frameworks. Secondly, steel pipes have a high resistance to corrosion, which ensures longevity and reduces maintenance costs. Additionally, steel pipes are versatile and can be easily customized to meet specific project requirements, as they come in various sizes, shapes, and thicknesses. Lastly, steel pipes are environmentally friendly, as they are recyclable, reducing the overall carbon footprint of construction projects.
- Q: Can steel pipes be painted?
- Yes, steel pipes can be painted. Painting steel pipes not only enhances their appearance but also provides protection against corrosion and rust. The process typically involves cleaning the pipes thoroughly, applying a primer, and then coating them with a suitable paint.
- Q: How do you calculate the pipe thermal expansion coefficient for steel pipes?
- The pipe thermal expansion coefficient for steel pipes can be calculated using the formula: α = (L2 - L1) / (L1 * (T2 - T1)) Where: α is the pipe thermal expansion coefficient L1 is the initial length of the pipe L2 is the final length of the pipe T1 is the initial temperature of the pipe T2 is the final temperature of the pipe. This formula takes into account the change in length and the change in temperature to determine the coefficient of thermal expansion for steel pipes.
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SPIRAL STEEL PIPE 24’‘ 26’‘ 28’‘ 32’‘ 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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