Seamless black steel pipe API,GB,ASTM,ASME,DIN
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 m.t.
- Supply Capability:
- 5000 m.t./month
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1. Commodity Name: Seamless steel pipe
2. Standard: API,GB,ASTM,ASME,DIN
3. Quality grade: 10#, 20#, A106B, A53B, API 5L B, Q235, Q345, ST37-2, ST 45, ST52.etc.
4. Dimension:
OD: 1/2"-24"
WT: 2.5-80mm, SCH10~SCH40~XXL
length: 5.8m,6m,8m,9m,12m
5. Technique: Hot Rolled/Cold Rolled/ Cold Drawn
6. application
carbon seamless steel pipes are widely used in gas, water and oil, transpotation;constructions;Bridge,highway,windows of model steel door; building materials;fences;heating facilities Fluid Pipe;conduit pipe,scaffolding pipe.etc.
7. Payment Terms: L/C D/A D/P T/T
8.packing and shipment
Packaged in bundles,as per customers' requirements, it can also bepackagesd as beveled ends, typed marking, black painting, plastic caps protection,woven bags packing
For 20" container the max length is 5.8m; For 40" container the max length is 12m. other options are available based on customer requests. Please discuss when placing orders.
9. Surface: painted with varnish;
10. Plastic caps at ends.
11. Tolerance: OD +1%/-1%
WT +12.5%/-10%
12. Chemical composition:
Models of Steel Pipes | Chemical Component | |||||||
Steel 20 (ASTM A106B) | C | Si | Mn | P | S | Cu | Ni | Cr |
0.17~0.24 | 0.17~0.37 | 0.35~0.65 | 0.035max | 0.035max | 0.25max | 0.25max | 0.25max | |
Steel45 (ASTM 1045) | 0.42~0.50 | 0.17~0.37 | 0.50~0.80 | 0.035max | 0.035max | 0.25max | 0.25max | 0.25max |
16Mn(Q345B) | 0.12~0.20 | 0.20~0.55 | 1.20~1.60 | 0.035max | 0.035max | 0.25max | 0.25max | 0.25max |
45Mn2 ( ASTM1345) | 0.42~0.49 | 0.17~0.37 | 1.40~1.80 | 0.035max | 0.035max | 0.3max | 0.3max | 0.30max |
- Q: Can steel pipes be used for HVAC systems?
- Yes, steel pipes can be used for HVAC systems. Steel pipes are commonly used for HVAC systems due to their strength, durability, and resistance to extreme temperatures. They are suitable for transporting air, water, and refrigerants, making them a reliable choice for HVAC installations.
- Q: What is the difference between internal coating and external lining of steel pipes?
- Internal coating and external lining are two different methods used to protect steel pipes from corrosion and other forms of damage. Internal coating refers to the process of applying a protective layer or coating to the inner surface of the steel pipe. This is done to prevent the pipe from corroding or being damaged by the fluid or substance being transported through it. The coating is typically made of materials such as epoxy, polyurethane, or polyethylene, which provide a barrier between the pipe and the transported material. Internal coating helps to extend the lifespan of the pipe and maintain the quality of the transported material. On the other hand, external lining refers to the process of applying a protective layer or lining to the outer surface of the steel pipe. This is done to protect the pipe from external factors such as soil, moisture, chemicals, or physical damage. The external lining is usually made of materials such as polyethylene, polypropylene, or fusion-bonded epoxy. The lining acts as a barrier, preventing corrosive substances from coming into contact with the pipe and causing damage. It also helps to maintain the structural integrity of the pipe and prevent any leaks or cracks from forming. In summary, the main difference between internal coating and external lining of steel pipes is the location of the protective layer. Internal coating is applied to the inner surface of the pipe, while external lining is applied to the outer surface. Both methods aim to protect the pipe from corrosion and damage, but they focus on different aspects of pipe protection.
- Q: How are steel pipes used in the construction of industrial facilities?
- Steel pipes are commonly used in the construction of industrial facilities for various purposes such as transporting fluids, gases, and steam, as well as providing structural support and carrying electrical wiring. They are durable, resistant to corrosion, and can withstand high pressure and temperature, making them ideal for industrial settings.
- Q: What are the different sizes of steel pipes available?
- Steel pipes are available in a wide range of sizes, ranging from small diameters of around 0.5 inches to large diameters of up to 72 inches or more. The specific sizes of steel pipes vary depending on their intended use and application, with common sizes falling within the range of 1/8 inch to 36 inches in diameter.
- Q: Can steel pipes be used for oil wells?
- Yes, steel pipes can be used for oil wells. Steel pipes are highly durable and resistant to corrosion, making them suitable for the harsh conditions and high-pressure environments encountered in oil drilling operations.
- Q: How are steel pipes used in the manufacturing of agricultural machinery?
- Steel pipes are commonly used in the manufacturing of agricultural machinery as they are strong, durable, and resistant to corrosion. They are used to create the framework and structural components of various agricultural equipment such as plows, tillers, planters, and harvesters. Steel pipes provide stability and strength to these machines, allowing them to withstand heavy loads and operate efficiently in tough farming conditions.
- Q: How are steel pipes used in the manufacturing of structural frameworks?
- Steel pipes are commonly used in the manufacturing of structural frameworks due to their strength and durability. They are used as structural members to support the weight of buildings, bridges, and other infrastructure. Steel pipes are often used as columns, beams, and braces to provide stability and load-bearing capacity to the structures. The pipes are typically welded or bolted together to create a rigid framework that can withstand heavy loads and structural forces.
- Q: How do you calculate the pipe flow rate for steel pipes?
- To calculate the pipe flow rate for steel pipes, you will need to consider various factors. Firstly, determine the inside diameter of the pipe, typically denoted as D. Next, measure the length of the pipe, denoted as L. Additionally, you will need to know the pressure drop, ΔP, across the pipe and the fluid density, ρ. Once you have this information, you can use the Darcy-Weisbach equation or the Hazen-Williams equation to calculate the flow rate. The Darcy-Weisbach equation is commonly used for pipes with turbulent flow, while the Hazen-Williams equation is often used for pipes with laminar flow. For the Darcy-Weisbach equation, the formula is: Q = (π/4) * D^2 * √(2ΔP/ρ) Where Q is the flow rate in cubic meters per second, D is the inside diameter of the pipe in meters, ΔP is the pressure drop across the pipe in pascals, and ρ is the fluid density in kilograms per cubic meter. For the Hazen-Williams equation, the formula is: Q = C * (D^2.63) * (ΔP^0.54) * (L^0.63) Where Q is the flow rate in cubic meters per second, D is the inside diameter of the pipe in meters, ΔP is the pressure drop across the pipe in pascals, L is the length of the pipe in meters, and C is the Hazen-Williams coefficient which depends on the roughness of the pipe. To accurately calculate the pipe flow rate, it is important to ensure that the units of measurement are consistent throughout the calculation. Additionally, it is crucial to have accurate measurements of the inside diameter, length, pressure drop, and fluid density to obtain reliable results.
- Q: Can seamless steel pipe and ordinary steel pipe be welded?
- Seamless steel tube branch and seamed two, seamed steel pipe welding is formed, all two can be welded together, if you do not allow the use of seam tube cannot connect.
- Q: How are steel pipes inspected for quality?
- Steel pipes are inspected for quality through various methods such as visual inspection, non-destructive testing techniques like ultrasonic testing, magnetic particle inspection, and radiographic testing. These inspections help identify any defects, cracks, or imperfections in the pipes, ensuring they meet the required quality standards. Additionally, mechanical tests such as tensile strength and hardness tests may also be conducted to assess the structural integrity of the steel pipes.
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Seamless black steel pipe API,GB,ASTM,ASME,DIN
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 m.t.
- Supply Capability:
- 5000 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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