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 used in desalination plants?: Steel pipes are used in desalination plants for transporting and distributing water throughout the plant's various processes, such as intake, pre-treatment, reverse osmosis, and post-treatment. They are preferred due to their durability, corrosion resistance, and ability to withstand high pressure and temperature conditions. Steel pipes ensure the efficient and reliable conveyance of water, contributing to the overall effectiveness of desalination plants in producing freshwater from seawater.

Q: Why can't stainless steel be put together with carbon steel tube?: The bimetallic corrosion is terminated only when one of the three conditions is changed. Galvanic corrosion is related to the contact area of bimetal and the greater the contact area. Corrosion is less. The driving force of galvanic corrosion is the potential difference.[galvanic corrosion] refers to two or more than two kinds of electrode potential of metal in the corrosive medium, and contact with each other caused by electrochemical corrosion, also known as contact corrosion or double metal corrosion.

Q: What are the safety precautions while working with steel pipes?: Some safety precautions while working with steel pipes include wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and steel-toed boots, using proper lifting techniques to prevent back injuries, ensuring the work area is well-lit and free of obstacles, and using the correct tools and equipment for the job. Additionally, it is important to follow proper safety procedures when handling and storing steel pipes to minimize the risk of accidents or injuries.

Q: How are steel pipes used in the automotive exhaust systems?: Steel pipes are commonly used in automotive exhaust systems because steel is a durable and heat-resistant material. Steel pipes are used to transport the exhaust gases from the engine to the muffler and tailpipe, ensuring that the gases are safely and efficiently expelled from the vehicle. These pipes are designed to withstand high temperatures, corrosion, and vibration, making them an essential component in the exhaust system.

Q: What is the impact of temperature on steel pipes?: The impact of temperature on steel pipes is significant and can have both positive and negative effects. At high temperatures, steel pipes can experience thermal expansion, causing them to expand and potentially leading to distortion or buckling. This expansion can also affect the joints and connections, potentially causing leaks or failures. Therefore, it is crucial to consider the coefficient of thermal expansion when designing and installing steel pipes in high-temperature environments. On the other hand, steel pipes typically have excellent thermal conductivity, allowing them to withstand high temperatures without significant degradation. This makes them suitable for applications where heat transfer is a primary concern, such as in industrial processes or heating systems. Extreme cold temperatures can have detrimental effects on steel pipes as well. In freezing conditions, water or other fluids inside the pipes can expand and lead to cracks or bursts. This can cause leaks, loss of fluid, and potential damage to surrounding structures. Therefore, appropriate insulation and preventive measures need to be taken to ensure the integrity of steel pipes in cold environments. Additionally, temperature variations can also affect the mechanical properties of steel, such as its tensile strength and toughness. For instance, exposure to elevated temperatures over an extended period can lead to a phenomenon known as thermal degradation, where the steel's strength decreases, making it more prone to deformation or failure. In conclusion, the impact of temperature on steel pipes is significant and can influence their structural integrity, thermal performance, and mechanical properties. Proper design, insulation, and maintenance are essential to ensure the safe and efficient operation of steel pipes in various temperature conditions.

Q: What is the difference between steel pipes and FRP pipes?: Steel pipes and FRP (Fiber Reinforced Plastic) pipes are two different types of pipes that are commonly used in various industries and applications. Here are the key differences between the two: 1. Material Composition: Steel pipes are made of steel, which is an alloy of iron and carbon, with additional elements like manganese, silicon, and traces of other metals. On the other hand, FRP pipes are composed of a polymer matrix reinforced with fibers, such as glass or carbon fibers. 2. Strength and Durability: Steel pipes are known for their high strength and durability. They can withstand high pressures, heavy loads, and extreme temperatures. FRP pipes, although strong and durable, are comparatively lighter in weight and may not have the same level of strength as steel pipes. However, they are corrosion-resistant and have a longer lifespan in corrosive environments. 3. Corrosion Resistance: Steel pipes are prone to corrosion and require protective coatings or linings to prevent rust and deterioration. FRP pipes, on the other hand, are inherently corrosion-resistant. They do not require additional coatings and are suitable for transporting corrosive fluids or operating in corrosive environments. 4. Installation and Maintenance: Steel pipes require specialized welding or threading techniques for installation. They can be more labor-intensive and time-consuming to install, especially in complex or large-scale projects. FRP pipes, on the other hand, are lightweight and can be easily transported and installed. They often come in pre-fabricated sections, making installation faster and less labor-intensive. Additionally, FRP pipes require minimal maintenance compared to steel pipes. 5. Cost: Steel pipes are generally more expensive than FRP pipes due to the higher cost of raw materials and the need for additional corrosion protection measures. FRP pipes offer a cost-effective alternative, especially in applications where corrosion resistance is essential, as they eliminate the need for expensive coatings or linings. Overall, the choice between steel pipes and FRP pipes depends on the specific requirements of the application. Steel pipes are preferred for their high strength, while FRP pipes offer benefits such as corrosion resistance, lightweight, and cost-effectiveness.

Q: Can steel pipes be used for wastewater treatment facilities?: Yes, steel pipes can be used for wastewater treatment facilities. Steel pipes are known for their durability, corrosion resistance, and high strength, which makes them suitable for handling various types of wastewater and harsh chemicals. Additionally, steel pipes can be easily welded, allowing for flexibility in design and installation.

Q: How are steel pipes used in plumbing systems?: Steel pipes are commonly used in plumbing systems due to their durability and strength. They are typically used for water supply lines, sewage lines, and gas lines. Steel pipes are resistant to corrosion, making them a reliable choice for long-term use. They are often used in high-pressure systems and are known for their ability to withstand extreme temperatures. Additionally, steel pipes are easily accessible and cost-effective, making them a popular choice in plumbing installations.

Q: What is the typical lifespan of steel pipes?: The typical lifespan of steel pipes can vary depending on various factors such as the quality of the steel, the environment they are exposed to, and the maintenance and care they receive. However, on average, steel pipes can have a lifespan of anywhere between 20 to 100 years or more.

Q: How are steel pipes protected against rust?: Steel pipes are protected against rust through various methods such as galvanization, epoxy coating, and using corrosion-resistant alloys.

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