Roller pipes

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Outside diameter	1/2”-12”
Wall Thickness	1.0 -12mm SCH40,60,80, etc.
Tolerance	±5%
Material	Q195,Q215,Q235,Q345
Quality grade	First grade
Section Shape	Round
Surface Treatment	Hot rolled and ERW
Technique	Hot rolled
Ends	Threaded Ends, Grooved Ends
Length	Less than 12m
MOQ	10 Metric Ton or as your request if normal size
Deliver Time	Stock
Package	Nude pipe in bundle or as your request
Payment terms	T/T,L/C
Standard	GB/T3091-2008; BS1837-1985; ASTM A53/A53M-07; ASTM A513-07; ASTM A252; JIS G3444-06; JIS G3452-2010; EN10255; DIN2440
Main Usage Relevant Size	1. Water Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 60-273mm 2. Threaded/Screwed Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.3-165.1mm 3. Structural Steel Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.7-190.7mm 4. Scaffolding Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 48mm 5. Straight Seam Welded Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 48-273mm 6. Steel pipes with a longitudinal ERW Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.3-273.1mm Standard: GB/T 3091-2008

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:Can steel pipes be used for bridge piling?: Yes, steel pipes can be used for bridge piling. Steel pipes are commonly used in bridge construction due to their strength, durability, and resistance to corrosion. They provide sufficient load-bearing capacity and can be driven deep into the ground to provide stable support for bridges.

Q:How do steel pipes handle extreme temperatures?: Steel pipes are designed to handle extreme temperatures due to their high thermal conductivity and resistance to heat. At high temperatures, steel pipes expand but maintain their structural integrity, preventing them from warping or weakening. Additionally, steel's low thermal expansion coefficient allows it to withstand rapid temperature changes without significant damage. Overall, steel pipes are well-suited for transporting hot or cold fluids and gases in various industrial applications.

Q:How are steel pipes insulated to prevent condensation?: Steel pipes are typically insulated using materials such as foam or fiberglass wraps, which act as a barrier between the cold pipe surface and the surrounding air. This insulation prevents the formation of condensation by reducing heat transfer and maintaining the pipe temperature above the dew point of the air.

Q:How do steel pipes compare to other materials in terms of cost?: Steel pipes are generally more cost-effective compared to other materials due to their durability and longevity. While the initial investment may be higher, their lower maintenance and replacement costs make them a more economical choice in the long run. Additionally, steel pipes can withstand harsh environmental conditions and are less prone to corrosion, reducing the need for frequent repairs or replacements.

Q:How are steel pipes tested for quality and strength?: Steel pipes are tested for quality and strength through various methods such as destructive and non-destructive testing. Destructive testing includes tests like tensile, impact, and hardness tests, which measure the strength and durability of the pipes. Non-destructive testing methods like ultrasonic or X-ray examination are used to detect any defects or flaws in the pipes without causing any damage. These testing methods ensure that steel pipes meet the required quality and strength standards before being used in various applications.

Q:Are the welded and galvanized tubes the same weight?: There should be no difference in the weight of the same specifications for the welded pipe and galvanized pipe. The slight difference is that the galvanized pipe should be pickled before galvanizing and must digest some iron and then galvanized. The difference depends on the difference in the process. So the theoretical calculations are the same.

Q:How are steel pipes threaded for easy installation?: Steel pipes are threaded for easy installation using a process called threading. Threading involves cutting grooves or ridges into the pipe to create a spiral pattern. This pattern allows the pipe to easily connect with other threaded components, such as fittings or valves. There are two common methods used to thread steel pipes: manual threading and machine threading. In manual threading, a handheld tool called a pipe die is used. The die is equipped with sharp teeth that cut into the pipe as it is rotated. The pipe is secured in a vise or held firmly by hand, and the die is applied to the end of the pipe. The die is then rotated around the pipe, creating the threaded grooves. This process requires skill and precision to ensure accurate and properly aligned threads. Machine threading, on the other hand, is a more automated process. It involves the use of a pipe threading machine, which is equipped with a die head that automatically cuts the threads into the pipe. The machine secures the pipe and rotates it while the die head moves along the length of the pipe, cutting the threads. Machine threading is faster and more efficient than manual threading, making it ideal for large-scale production or projects. Regardless of the method used, it is crucial to ensure that the threads are clean and free from debris or burrs. This is important for easy installation and to prevent leaks or other complications. After threading, the pipes are typically inspected to ensure the threads meet the required specifications. Threading steel pipes allows for easy installation as the threaded ends can be easily screwed into fittings, valves, or other pipes with compatible threads. This threaded connection creates a tight seal, making it suitable for various applications, such as plumbing, gas lines, or industrial piping systems.

Q:Are steel pipes suitable for underground sewage systems?: Yes, steel pipes are suitable for underground sewage systems. Steel pipes are known for their strength, durability, and resistance to corrosion, making them an ideal choice for underground installations. Steel pipes can withstand the pressure and weight of the soil above, ensuring the integrity of the sewage system. Additionally, steel pipes have a long lifespan and can withstand extreme temperatures and environmental conditions, making them a reliable choice for underground applications. However, it is important to note that proper coating and insulation should be applied to steel pipes to prevent corrosion and ensure longevity.

Q:Can steel pipes be used in the oil and gas industry?: Indeed, the oil and gas industry commonly utilizes steel pipes. Renowned for their robustness, longevity, and resistance to corrosion, steel pipes are well-suited for the transportation and storage of diverse fluids and gases within this sector. They possess the ability to endure high pressure and extreme temperatures, which are frequently encountered during oil and gas operations. Moreover, the ease with which steel pipes can be welded together facilitates efficient assembly and maintenance. Consequently, steel pipes represent a dependable and economically sound option for the oil and gas industry.

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