Oil and Gas Steel Pipe API, ASTM, BS, DIN, GB, JIS
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 15000 m.t./month
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OKorder Financial Service
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1、Structure of Welded Steel Tube:
We are company that have many years experience and professional manager team and engineer team and sales team, sure we will provide you high quality of pipe and professioanl service.
Welded Steel Tube is formed by drawing a solid billet over a piercing rod to create the hollow shell. We are company that have many years experience and professional manager team and engineer team and sales team, sure we will provide you high quality of welded pipe and professioanl service.
2、Main Features of the Welded Steel Tube:
• High manufacturing accuracy
• The higher strength
• The small inertia resistance
• Strong heat dissipation ability
• Good visual effect
• Satisfy price
3、Welded Steel Tube 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 Welded Steel Tube:
①How is the quality of your products?
Our products are strictly in accordance with international and domestic standard. We test on every pipe before delivery. Any quality certification or testing report you want to see, please tell us.
Guaranteed: If products’ quality is not in accordance with description as we provide or the promise before you place order, we promise 100% refund.
②How about the price?
Yes, we are factory and be capable of offering you the lowest price. One of our policy is that “ to save time and be absolutely honest with our business relationship, we quote as low as possible for every client, and discount can be given according to the quantity”, if you are interested in bargain and dissatisfy our factory price, just don’t waste your time. Our quotation is professional.
③Why should you choose us?
Choice happens because of our quality and price. Additionally, we can also offer professional products inquiry, products knowledge train (for agents), fast goods delivery, outstanding 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 OK.
6、 Welded Steel Tube Images：
- Q:Are steel pipes resistant to fire?
- Yes, steel pipes are highly resistant to fire.
- Q:How do you calculate the pipe flow velocity coefficient for steel pipes?
- The Manning's equation is employed to determine the flow velocity in open channels and pipes, taking into consideration the hydraulic radius, slope, and roughness coefficient of the pipe. By applying this equation, the pipe flow velocity coefficient for steel pipes can be calculated. To ascertain the pipe flow velocity coefficient for steel pipes, the following steps should be followed: 1. Calculate the hydraulic radius (R) of the steel pipe by dividing the cross-sectional area (A) of the pipe by the wetted perimeter (P). The formula to use is R = A/P. 2. Determine the slope (S) of the pipe, which is the change in elevation divided by the length of the pipe. Usually, it is expressed as a ratio or a percentage. 3. Obtain the roughness coefficient (n) of the steel pipe, representing the internal roughness of the pipe. This information can be found in literature or pipe manufacturer specifications, often given in terms of the Manning's roughness coefficient. 4. Insert the values of hydraulic radius (R), slope (S), and roughness coefficient (n) into the Manning's equation: V = (1/n) * R^(2/3) * S^(1/2) where V signifies the flow velocity. 5. Solve the equation for V to calculate the pipe flow velocity coefficient for steel pipes. It is crucial to note that the calculated velocity coefficient may differ depending on specific pipe dimensions, flow conditions, and other factors. Therefore, it is advisable to consult relevant engineering standards or seek guidance from a hydraulic engineer to ensure accurate and reliable calculations for specific applications.
- Q:How do you calculate the pipe friction loss coefficient for steel pipes?
- To determine the pipe friction loss coefficient for steel pipes, it is necessary to take into account several factors. One commonly used approach is the utilization of the Darcy-Weisbach equation, which establishes a relationship between the frictional head loss in a pipe and the flow rate, pipe diameter, pipe length, fluid properties, and the pipe roughness coefficient. The Darcy-Weisbach equation can be presented as follows: The head loss due to friction, denoted as hf, can be calculated using the formula (f * L * V^2) / (2 * g * D), where: - f represents the pipe friction factor, - L corresponds to the pipe length, - V denotes the fluid velocity, - g symbolizes the acceleration due to gravity, and - D represents the pipe diameter. Determining the pipe friction factor, f, is crucial. For steel pipes, this factor relies on the pipe roughness coefficient, which indicates the relative roughness of the pipe. The relative roughness is determined by dividing the absolute roughness of the pipe surface by the pipe diameter. The pipe roughness coefficient can be obtained from different sources, including manufacturer specifications, engineering handbooks, or experimental data. It is imperative to ensure that the roughness coefficient used aligns with the specific type and condition of the steel pipe under analysis. Once the pipe roughness coefficient is obtained, it can be employed to calculate the pipe friction factor through empirical correlations or charts. These correlations often involve the Reynolds number, a dimensionless quantity that characterizes the flow regime. By substituting the determined pipe friction factor into the Darcy-Weisbach equation, it becomes possible to calculate the head loss due to friction for steel pipes. This value is indispensable in the design of piping systems, determination of pump requirements, or estimation of energy consumption in fluid flow applications.
- Q:What industries typically use steel pipes?
- Steel pipes are widely used in various industries due to their durability, strength, and versatility. Some of the industries that typically utilize steel pipes include: 1. Construction: Steel pipes are extensively used in the construction industry for various applications such as structural support, plumbing, and underground piping systems. They are commonly used in commercial buildings, residential structures, bridges, and tunnels. 2. Oil and gas: The oil and gas industry heavily relies on steel pipes for drilling, transporting, and distributing oil and gas. Steel pipes are used in offshore drilling rigs, oil refineries, natural gas processing plants, and pipelines to ensure the safe and efficient transport of these valuable resources. 3. Water and wastewater: Steel pipes play a crucial role in providing clean water supply and managing wastewater. They are used in water treatment plants, desalination facilities, and municipal water distribution systems. Steel pipes are also utilized for sewage and stormwater management. 4. Manufacturing: Various manufacturing industries employ steel pipes for specific applications. For instance, automobile manufacturers use steel pipes in exhaust systems, fuel lines, and hydraulic systems. Steel pipes are also used in the manufacturing of machinery, equipment, and appliances. 5. Mining: The mining industry requires strong and durable materials for its operations. Steel pipes are used in mining applications such as conveying materials, ventilation systems, and underground infrastructure. They are particularly useful in transporting minerals, ores, and other mining byproducts. 6. Energy and power: Steel pipes are extensively used in power generation facilities, including thermal power plants, nuclear power plants, and renewable energy installations. They are utilized in steam pipelines, cooling systems, and heat exchangers. Steel pipes are also employed in the construction of transmission lines for electricity distribution. 7. Infrastructure and transportation: Steel pipes are essential for infrastructure development and transportation systems. They are used in the construction of roads, bridges, railways, and airports. Steel pipes are also utilized in the transportation of fluids and gases, such as in pipelines for natural gas or petroleum products. Overall, the versatility and reliability of steel pipes make them indispensable in a wide range of industries, contributing to various aspects of our modern infrastructure and daily lives.
- Q:What's the difference between No. 20 steel pipe and 27SiMn Steel Pipe?
- 20# steel pipe material is 20 steel, generally 20 seamless steel pipe, 20# steel pipe material is: high quality carbon structural steel
- Q:How are steel pipes used in the agricultural sector?
- Steel pipes are commonly used in the agricultural sector for various purposes such as irrigation, drainage, and livestock handling. They are used to transport water from a source to fields, as well as to distribute water evenly across crops through irrigation systems. Steel pipes also help in draining excess water from fields and preventing waterlogging. Additionally, they are utilized for constructing fences, gates, and cattle handling facilities, ensuring the safety and containment of livestock.
- Q:What are the different methods of pipe cutting for steel pipes?
- There exists a variety of techniques for cutting steel pipes, each tailored to specific circumstances and demands. Some of the most prevalent techniques are as follows: 1. Manual Pipe Cutters: These handheld tools are frequently employed for cutting smaller steel pipes. They typically feature a rotating cutting wheel that gradually creates a groove until the pipe is severed. Portable and relatively user-friendly, manual pipe cutters are suitable for on-site cutting tasks. 2. Hacksaw: The use of a hacksaw is a traditional and cost-effective means of cutting steel pipes. This method requires physical exertion and time; however, it can effectively cut pipes with smaller diameters. It is crucial to use a fine-toothed blade and apply steady pressure to ensure a clean and precise cut. 3. Reciprocating Saw: Also known as a sawzall, the reciprocating saw is a power tool that employs a back-and-forth cutting motion to swiftly and efficiently cut through steel pipes. These versatile saws can accommodate different types of blades to handle various pipe sizes and thicknesses. 4. Band Saw: Band saws are commonly employed in industrial settings for the purpose of cutting large steel pipes. These saws feature a continuous loop of teethed metal blade that moves on wheels, enabling precise and rapid cutting. Band saws are ideal for cutting large-diameter pipes and can be operated manually or fully automated for high-volume cutting tasks. 5. Pipe Cutting Machines: Pipe cutting machines are often utilized to achieve precise and consistent cuts. These machines are designed to cut steel pipes swiftly and accurately, making them suitable for large-scale industrial applications. Depending on the machine and requirements, various cutting methods like abrasive cutting, flame cutting, or plasma cutting can be employed. It is important to note that the selection of a pipe cutting method depends on factors such as pipe diameter, thickness, location, precision requirements, and available resources. It is imperative to adhere to proper safety precautions when working with any cutting method to prevent injury or damage to the pipes.
- Q:How are steel pipes threaded for easy installation?
- Steel pipes are threaded for easy installation by using a specialized machine called a pipe threading machine. This machine cuts precise threads onto the ends of the steel pipes, allowing them to be easily connected and tightened together using threaded fittings or couplings. This threading process ensures a secure and leak-proof connection, making installation quick and efficient.
- Q:Can steel pipes be used for sewer systems?
- Yes, steel pipes can be used for sewer systems. However, they are less commonly used compared to other materials such as PVC or concrete pipes. Steel pipes are generally used for larger diameter sewer lines or in specific situations where they are preferred due to their strength and durability.
- Q:What are the different types of steel pipe valves?
- There are several types of steel pipe valves, including gate valves, globe valves, ball valves, check valves, and butterfly valves. Each type of valve serves a specific purpose and has its own unique features and applications in various industries.
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Oil and Gas Steel Pipe API, ASTM, BS, DIN, GB, JIS
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 15000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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