Seamless Steel pipe hot Rolled/Cold Rolled
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 8000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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1、Structure of Seamless steel pipe hot Rolled/Cold Rolled Description:
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.
2、Main Features of the Seamless steel pipe hot Rolled/Cold Rolled:
• High manufacturing accuracy
• High strength
• Small inertia resistance
• Strong heat dissipation ability
• Good visual effect
• Reasonable price
3、 Seamless steel pipe hot Rolled/Cold Rolled Specification：
Standard | GB, DIN, ASTM |
Grade | 10#-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、Seamless steel pipe hot Rolled/Cold Rolled Images：
5、FAQ of Seamless steel pipe hot Rolled/Cold Rolled:
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.
- Q: What are the factors to consider when designing a steel pipe system?
- When designing a steel pipe system, several factors need to be considered to ensure its functionality, durability, and efficiency. These factors include: 1. Pressure and temperature requirements: Determining the maximum pressure and temperature that the steel pipe system will be exposed to is crucial. This information is essential for selecting the appropriate pipe material, thickness, and jointing method to withstand the system's operating conditions. 2. Pipe material: Choosing the right material for the steel pipe system is important. Factors such as corrosion resistance, strength, and cost should be considered. Common materials for steel pipes include carbon steel, stainless steel, and alloy steel. 3. Pipe size and thickness: Calculating the adequate pipe size and wall thickness is essential to ensure the required flow rate and pressure drop within the system. The pipe size affects the system's efficiency and must be chosen based on the anticipated flow rates and pressure losses. 4. Support and anchoring: Proper support and anchoring are critical to prevent sagging, movement, and stress on the steel pipe system. The design should consider the weight of the pipes, the fluid being transported, and any external forces that may act on the system. 5. Expansion and contraction: Steel pipes expand and contract with temperature variations, causing stress on the system. Expansion joints or loops should be incorporated to allow for thermal growth and contraction, preventing damage and distortion. 6. Fluid compatibility: Understanding the properties of the fluid being transported, such as corrosiveness, viscosity, and potential for sedimentation or scaling, is important in selecting the appropriate pipe material and protective coatings or linings. 7. Accessibility and maintenance: Consideration should be given to the accessibility of the system for installation, inspection, and maintenance purposes. Proper access points, valves, and fittings should be included in the design to allow for easy maintenance and repairs. 8. Environmental factors: The steel pipe system may be exposed to various environmental conditions, such as extreme temperatures, humidity, or corrosive substances. These factors should be considered when selecting the pipe material, protective coatings, and insulation. 9. Regulatory compliance: Compliance with applicable industry standards, codes, and regulations is essential. The design should adhere to safety guidelines and applicable building codes to ensure the pipe system's integrity and longevity. 10. Cost consideration: Finally, the overall cost of the steel pipe system, including material, installation, maintenance, and energy consumption, should be taken into account. Balancing cost-effectiveness with performance requirements is crucial in achieving an efficient and economical design. By considering these factors, engineers and designers can create a steel pipe system that is suitable for its intended purpose, ensuring its longevity, reliability, and safety.
- Q: How do steel pipes handle ground freezing and thawing?
- Steel pipes are highly resistant to ground freezing and thawing due to their inherent strength and durability. They are designed to withstand extreme temperature variations without significant damage or deformation. Additionally, steel pipes have low thermal conductivity, meaning they do not transfer heat as easily as other materials, allowing them to maintain their structural integrity even in freezing conditions. Thus, steel pipes are an excellent choice for underground infrastructure and can effectively handle ground freezing and thawing.
- Q: How do you calculate the pressure drop in a steel pipe?
- To calculate the pressure drop in a steel pipe, you need to consider several factors such as the diameter and length of the pipe, the flow rate of the fluid, and the properties of the fluid itself. One commonly used equation to calculate the pressure drop in a pipe is the Darcy-Weisbach equation, which is given as: ΔP = (f * (L / D) * (ρ * V^2)) / (2 * D) Where: ΔP is the pressure drop in the pipe f is the Darcy friction factor, which depends on the pipe roughness and Reynolds number L is the length of the pipe D is the diameter of the pipe ρ is the density of the fluid V is the velocity of the fluid To calculate the Darcy friction factor, you can use different methods depending on the flow regime. For laminar flow, you can use the formula f = 16 / Re, where Re is the Reynolds number. For turbulent flow, there are several methods to determine the friction factor, such as the Colebrook equation or the Moody chart. It is important to note that the properties of the fluid, such as its viscosity and density, may vary with temperature and pressure. Therefore, it is necessary to consider these variations when calculating the pressure drop. Additionally, it is worth mentioning that there are other factors that can affect the pressure drop in a steel pipe, such as fittings, valves, and elbows. These factors introduce additional losses, which can be accounted for by using appropriate correction factors or by directly measuring the pressure drop across these components. Overall, calculating the pressure drop in a steel pipe involves using the appropriate equations, considering the properties of the fluid, and accounting for the various factors that may affect the flow. It is recommended to consult relevant engineering handbooks or utilize specialized software for accurate calculations.
- Q: What is the buckling type thin-wall steel pipe? What is a tight set of thin-walled steel tubes? What's the difference between the two?
- The wire pipe thread (box, cup lock fastening points) (JDG) and buckling type (KBG) two. Products are made of high-quality steel pipe, through precise stamping molding, supply pipe and terminal box connection. The nut is hexagonal, and the convex point is punched at the six corner so as to form a good multi-point contact after being connected with the junction box.
- Q: How do you transport and store steel pipes?
- Careful planning and adherence to safety guidelines are essential when it comes to the transportation and storage of steel pipes. The following steps outline the necessary procedures: 1. Select the appropriate mode of transportation: Depending on the quantity and weight of the steel pipes, you have the option to transport them by truck, train, or ship. Evaluate the distance, logistics, and cost-effectiveness of each alternative before making a decision. 2. Package and secure the steel pipes: Proper packaging is crucial to prevent damage during transit. Bundle the pipes together using steel strapping or banding, ensuring a tight and secure fastening to prevent any shifting or movement during transportation. 3. Utilize suitable lifting equipment: When loading and unloading the pipes, make use of appropriate lifting equipment such as cranes, forklifts, or hoists. Ensure that the equipment is capable of safely handling the weight and length of the pipes. 4. Protect against moisture and corrosion: Steel pipes are vulnerable to moisture and corrosion, which can weaken their structural integrity. Apply a protective coating or wrap the pipes with waterproof materials before transportation. Additionally, consider using moisture-absorbing desiccants or placing the pipes on pallets to keep them elevated off the ground. 5. Plan for secure storage: If storing the steel pipes for an extended period, select a dry and secure location. Ensure that the storage area is well-ventilated and shielded from direct exposure to sunlight, rain, or extreme temperatures. Utilize racks or pallets to keep the pipes off the ground and prevent contact with moisture. 6. Conduct thorough inspections for damage: Prior to transportation and after storage, perform comprehensive inspections to identify any damage or signs of corrosion. This proactive approach will enable prompt resolution of any issues and ensure the integrity of the steel pipes. It is important to adhere to local regulations and safety guidelines specific to your region when transporting and storing steel pipes. By following these steps, you can guarantee the safe and efficient transportation and storage of steel pipes while minimizing the risk of damage and preserving their quality.
- Q: What are the common methods for inspecting the condition of steel pipes?
- There are several common methods for inspecting the condition of steel pipes. These methods aim to identify any defects or potential issues that could affect the integrity of the pipes. 1. Visual Inspection: This involves a thorough visual examination of the pipes to identify any visible signs of damage such as corrosion, cracks, or leaks. Inspectors may use tools such as flashlights, mirrors, or borescopes to access hard-to-reach areas. 2. Ultrasonic Testing: This method uses high-frequency sound waves to detect defects within the steel pipes. A transducer is used to emit sound waves, and any disruptions or reflections in the waves can indicate potential issues such as cracks or thinning of the pipe walls. 3. Magnetic Particle Testing: This technique is primarily used to detect surface cracks or defects in steel pipes. A magnetic field is applied to the pipe, and fine iron particles are then applied to the surface. The particles will gather at any areas where there are surface defects, making them easily visible. 4. Eddy Current Testing: This non-destructive testing method is used to detect surface and near-surface defects in steel pipes. It involves passing an alternating current through a coil, which induces eddy currents in the pipe. Any disruptions or changes in the eddy currents can indicate defects such as corrosion or cracks. 5. Radiographic Testing: This method uses X-rays or gamma rays to inspect the internal structure of steel pipes. X-ray film or a digital detector is placed on one side of the pipe, while the X-ray source is placed on the other side. The rays penetrate the steel, and any irregularities or defects can be identified on the film or through digital imaging. 6. Dye Penetrant Inspection: This technique is used to detect surface-breaking defects in steel pipes. A dye penetrant is applied to the surface of the pipe, and after a specified period, a developer is used to draw out the dye from any defects. The dye will make the defects easily visible. These methods, either individually or in combination, provide a comprehensive inspection of steel pipes, ensuring their reliability and safety in various industries such as oil and gas, construction, and manufacturing.
- Q: How are steel pipes connected to other materials like concrete or plastic?
- Various methods are commonly employed to connect steel pipes to other materials such as concrete or plastic. Among these methods, fittings play a significant role. Fittings, specialized components, serve to facilitate the connection between different materials or sections of pipe. These fittings are available in a variety of shapes and sizes, including elbows, tees, reducers, and couplings, and are designed to establish a dependable and leak-proof connection. When it comes to connecting steel pipes to concrete, one method involves the utilization of concrete anchors. These anchors are embedded within the concrete structure and provide a stable foundation for securing the steel pipe. Clamps or brackets are subsequently employed to attach the pipe to the anchor. In the case of joining steel pipes to plastic materials, the use of transition fittings proves to be effective. These fittings are specifically crafted to connect steel pipes with plastic pipes. They typically feature different connection mechanisms on each end, such as threads or compression fittings, enabling a secure and reliable joint. Welding techniques can also be employed to connect steel pipes to other materials in certain situations. Welding involves melting the ends of the steel and the other material together to create a robust joint. This method is commonly utilized for connecting steel pipes to steel structures or components. In summary, the connection of steel pipes to materials like concrete or plastic necessitates the utilization of specialized fittings, anchors, or welding techniques. These methods guarantee a secure, long-lasting connection capable of withstanding the demands of the given application.
- Q: Can steel pipes be used in the automotive industry?
- Yes, steel pipes are commonly used in the automotive industry for various applications such as exhaust systems, fuel lines, and structural components. The high strength, durability, and heat resistance of steel make it an ideal material for handling the demands of the automotive environment.
- Q: What is the role of steel pipes in the transportation of chemicals?
- The role of steel pipes in the transportation of chemicals is to provide a strong, durable, and corrosion-resistant conduit for safely moving various types of chemicals from one location to another. Steel pipes are known for their high strength and ability to withstand high pressure, making them suitable for handling hazardous or aggressive substances. Additionally, the smooth interior surface of steel pipes minimizes friction, allowing for efficient and continuous flow of chemicals. The steel material is also resistant to chemical reactions, ensuring the integrity and purity of the transported substances. Overall, steel pipes play a crucial role in ensuring the safe and efficient transportation of chemicals, protecting both the environment and human health.
- Q: How do you calculate the pipe thermal expansion coefficient for steel pipes?
- In order to calculate the pipe thermal expansion coefficient for steel pipes, it is necessary to take into account both the linear expansion coefficient of the material and the temperature change. The typical linear expansion coefficient for steel is approximately 12 x 10^-6 per degree Celsius. To begin with, establish the initial length of the pipe, which is represented by L0. Then, measure the temperature change, indicated as ΔT. Proceed by multiplying the initial length of the pipe by the linear expansion coefficient and the temperature change: ΔL = L0 * α * ΔT. The resulting value, ΔL, signifies the alteration in length of the steel pipe caused by thermal expansion.
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Seamless Steel pipe hot Rolled/Cold Rolled
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 8000 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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