Seamless steel tube high quality hot rolled black

Seamless steel tube high quality hot rolled black

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 10000 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
Steel 20 (ASTM A106B)	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:How are steel pipes transported from the manufacturing site to the construction site?: Steel pipes are typically transported from the manufacturing site to the construction site using various methods such as trucks, trains, ships, or even by air. The most common mode of transportation is trucks, which allow for easy and efficient delivery directly to the construction site.

Q:How are steel pipes made?: Steel pipes are made through a process called pipe manufacturing, which involves several steps. First, raw materials such as iron ore, coal, and limestone are melted in a blast furnace to produce molten iron. The molten iron is then mixed with recycled steel and processed in a basic oxygen furnace or electric arc furnace to refine its composition and remove impurities. Once the desired steel grade is achieved, it is cast into billets, which are heated and pierced to form a hollow cylindrical shape. These pierced billets are then elongated and shaped into pipes through a process called hot rolling or cold drawing. Finally, the pipes undergo various finishing operations, such as straightening, cutting, and inspection, before being ready for use in various applications.

Q:What is the role of steel pipes in the telecommunications industry?: Steel pipes play a crucial role in the telecommunications industry as they are used for the installation of underground and overhead telecommunication cables. These pipes provide protection and support to the cables, ensuring their safety and longevity. Additionally, steel pipes are also used in the construction of communication towers and infrastructure, making them an essential component in establishing and maintaining reliable telecommunications networks.

Q:Can steel pipes be used for hydropower systems?: Yes, steel pipes can be used for hydropower systems. Steel pipes are commonly used in hydropower systems for various applications such as penstocks, which are used to transport water from a reservoir to a turbine. Steel pipes are preferred for their strength, durability, and ability to withstand high pressure and water flow. They are also resistant to corrosion, making them suitable for long-term use in hydropower systems. Additionally, steel pipes can be easily welded or joined, allowing for flexibility in system design and installation. Overall, steel pipes are a reliable and widely used choice for hydropower systems.

Q:Are there specifications for scaffold steel pipe with 48mm * 3.2mm?: Scaffold tubes are our name for materials used to build scaffolding, because most scaffolding uses tubular bamboo or steel tubing. Bamboo and other bamboo is for a long time in the use of the scaffolding tube, but due to lack of safety and durability, now only in rural and urban area construction is lagging behind some of the home building small building has been used. The modernization construction, the most commonly used type of scaffolding pipe is steel pipe, the scaffolding should not only meet the demand of workers, but also to meet the characteristics of scaffolding firm and durable, so tough hard steel is the best choice. The selected steel pipe generally requires smooth surface, no cracks, no bending, no rust, and meet the relevant national standards.

Q:What is the creep resistance of steel pipes?: The ability of steel pipes to withstand deformation or elongation over time when exposed to high temperatures and constant stress is referred to as their creep resistance. Steel pipes are highly regarded for their exceptional resistance to creep because of the inherent strength and stability of the material. The creep resistance of steel pipes can vary depending on factors like the composition of the alloy, heat treatment, and the conditions in which they are used. Creep is a phenomenon that occurs at elevated temperatures, causing materials to slowly deform under constant stress. In the case of steel pipes, this can be a concern in applications where they are subjected to high temperatures for extended periods, such as in power plants, industrial furnaces, or steam pipelines. The ability to resist creep deformation is crucial to maintain the structural integrity and longevity of the pipes. Steel pipes are often designed and manufactured using alloys with high creep resistance properties, such as chromium-molybdenum (Cr-Mo) steels or nickel-based alloys. These alloys possess excellent mechanical strength, thermal stability, and resistance to oxidation and corrosion, all of which contribute to their superior creep resistance. Moreover, heat treatment processes like quenching and tempering can significantly enhance the creep resistance of steel pipes. These treatments involve controlled heating and cooling cycles to optimize the microstructure of the steel, thereby increasing its resistance to deformation and improving its overall performance at high temperatures. It is important to note that the creep resistance of steel pipes is typically specified by industry standards and codes, such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. These standards define the allowable stress levels and design criteria for different steel pipe applications, ensuring that they meet the necessary safety and performance standards. In summary, steel pipes are renowned for their excellent creep resistance due to their inherent strength, stability, and ability to withstand high temperatures. The specific creep resistance of steel pipes may vary depending on factors such as alloy composition, heat treatment, and operating conditions. Proper design and adherence to industry standards are essential to ensure the desired creep resistance and overall performance of steel pipes in various applications.

Q:What quota should be installed for heating seamless steel pipe?: Installation quota of seamless steel pipe project, if it is indoor engineering, sets of welded steel pipe, the price adjustment can

Q:Can steel pipes be used for underground fire sprinkler systems?: Yes, steel pipes can be used for underground fire sprinkler systems. Steel pipes are commonly used in fire sprinkler systems due to their strength, durability, and resistance to heat and corrosion. They are suitable for underground installations as they provide reliable and long-lasting performance. Additionally, steel pipes are available in various sizes and configurations, allowing for flexibility in designing and installing underground fire sprinkler systems. However, it is important to ensure that the steel pipes are properly coated or protected to prevent corrosion and ensure their effectiveness in an underground environment. Regular inspections and maintenance are also necessary to detect any potential issues or damages to the steel pipes in order to maintain the safety and functionality of the fire sprinkler system.

Q:How are steel pipes used in the manufacturing of food processing equipment?: Steel pipes are commonly used in the manufacturing of food processing equipment due to their durability, strength, and resistance to corrosion. These pipes are used to transport various food products such as liquids, powders, and gases within the equipment. They are also utilized in the construction of frames, supports, and structures for food processing machinery, ensuring stability and longevity. Additionally, steel pipes are often employed in the creation of heat exchangers, which are crucial for heating or cooling purposes in food processing equipment.

Q:What is the thermal conductivity of steel pipes?: The thermal conductivity of steel pipes can vary depending on the specific type of steel used and its composition. However, on average, the thermal conductivity of steel pipes is around 50-60 watts per meter-kelvin (W/mK). This means that steel pipes are relatively good conductors of heat, allowing for efficient transfer of thermal energy. The high thermal conductivity of steel pipes makes them suitable for various applications, including heating systems, industrial processes, and infrastructure projects where heat transfer is essential.

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