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: What are the different sizes of steel pipes available?: Steel pipes are available in a wide range of sizes, varying from small diameter pipes used for plumbing applications to large diameter pipes used for industrial purposes. The sizes typically range from 1/8 inch to 72 inches in diameter, with various wall thickness options.

Q: Can steel pipes be used for transportation of hazardous materials?: The transportation of hazardous materials can indeed utilize steel pipes. Steel is renowned for its robustness, longevity, and resistance to rust, which renders it suitable for the management and conveyance of various perilous substances. This encompasses combustible liquids, noxious chemicals, and other hazardous materials. Steel pipes, employed for the transportation of hazardous materials, are frequently custom-designed and fabricated to comply with strict safety regulations and industry standards. They are typically forged from top-notch steel alloys and subjected to stringent tests to guarantee their integrity and resistance to leaks or ruptures. Additionally, steel pipes can be manufactured with supplementary protective coatings or linings to furnish an extra layer of security and avert any potential reactions between the hazardous substance and the steel. These coatings can also aid in reducing the risk of corrosion and prolonging the lifespan of the pipes. In summary, steel pipes have an established record in the transportation of hazardous materials due to their inherent strength, durability, and ability to withstand the challenging conditions frequently encountered during transportation. Nonetheless, it is imperative to adhere to proper protocols for handling, storage, and transportation to ensure the safety of both the transported materials and the individuals involved in the process.

Q: What is the fatigue strength of steel pipes?: The ability of steel pipes to withstand repeated cyclic loading without failing is referred to as their fatigue strength. This characteristic is of utmost importance for pipes that experience dynamic or fluctuating loads, such as those used in the oil and gas industry, transportation infrastructure, or industrial applications. Several factors can affect the fatigue strength of steel pipes, including the grade of steel, dimensions of the pipe, manufacturing process, surface conditions, and environmental factors. Generally, steel pipes with higher tensile strength and toughness exhibit better resistance to fatigue. Fatigue strength is typically determined by subjecting the pipes to cyclic loading until failure occurs, through a process known as fatigue testing. The results of these tests are then used to establish a fatigue curve or S-N curve, which illustrates the relationship between the applied stress amplitude and the number of cycles required for failure. To quantify the fatigue strength, it is common to express it as the stress amplitude required to cause failure after a specific number of cycles, such as the stress amplitude at 10 million cycles (S-N10^7). However, it is important to consider other factors such as mean stress, surface finish, and loading frequency, which can also influence fatigue strength and may require consideration in specific applications. Ultimately, the fatigue strength of steel pipes is a crucial factor in engineering design and maintenance, as it ensures the long-term integrity and reliability of the pipes under cyclic loading conditions.

Q: What are the dimensions of a standard steel pipe?: The dimensions of a standard steel pipe can vary, but commonly, they range from 1/8 inch to 72 inches in diameter and have a standard length of 21 feet.

Q: Can steel pipes be used for geothermal applications?: Yes, steel pipes can be used for geothermal applications.

Q: What steel pipes are buried for outdoor heating pipes? Seamless or welded tube? Are there any rules for specific countries? Can use the seamed tube?: Screw on the line, mainly anti-corrosion and insulation, seamless pipe caliber restrictions, so the price is high, with the most affordable screw can meet the requirements, 377 and 273 of the spiral 3920 yuan / ton, straight seam is about 4350

Q: Can steel pipes be used for solar energy systems?: Yes, steel pipes can be used for solar energy systems. Steel pipes are commonly used for the construction of solar panel mounting structures and the transportation of heated fluids in solar thermal systems. They offer strength, durability, and resistance to high temperatures, making them suitable for various components of solar energy systems.

Q: What's the difference between a rectangular tube and a rectangular steel tube?: No difference, but your name is different, rectangular steel pipe, but can be divided into seamless rectangular steel pipe and welded rectangular, these two, in the material will also have a difference, I do not know how to help you

Q: What are the safety precautions to follow when working with steel pipes?: When working with steel pipes, it is important to follow several safety precautions to prevent accidents and injuries. Some key precautions include wearing appropriate personal protective equipment such as gloves, safety glasses, and steel-toed boots to protect against potential hazards. It is also crucial to inspect the pipes for any damage or defects before using them and ensure they are properly secured and supported during installation. Additionally, workers should use caution when handling heavy or sharp-edged pipes and use proper lifting techniques to prevent strains or sprains. Following safety protocols, including using the correct tools and equipment, practicing good housekeeping, and staying alert and focused, is essential to minimize risks and maintain a safe working environment.

Q: What is the maximum operating temperature for steel pipes?: The specific grade of steel used typically determines the maximum operating temperature for steel pipes. Carbon steel pipes, for instance, can generally endure temperatures ranging from 800-1000 degrees Fahrenheit (427-538 degrees Celsius). On the other hand, stainless steel or high-temperature alloys can withstand even higher temperatures, exceeding 1200-1500 degrees Fahrenheit (649-816 degrees Celsius). To determine the precise maximum operating temperature for a particular type of steel pipe, it is crucial to refer to the manufacturer's specifications or industry standards. This is because varying grades and compositions may have distinct temperature limits.

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