ASTM A500/JIS/EN Rectangular hollow section tube

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 5000 m.t./month

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Product Name	rectangular hollow section/ RHS
Size	Size:	1010--500500mm
	Thickness:	0.45--16mm
	Length:	3-12m
Steel Grade	Q195,Q215,Q235,Q345,16Mn, 20#
Standard	ASTM A500,EN10219,GB/T6728,GB/T6725,JIS G3466
Usage	1. For Structure, Airport, Railway 2. Construction and so on.
Ends	Plain end or By Your Choice
Surface	Bared Or With Oiled Or Galvanized
Technique	ERW ,Hot Rolled and Cold Rolled
Section Shape	Rectangular
Inspection	With Hydraulic Testing, Eddy Current , Infrared Test
Package	Bags, Bundle, In Bulk, Containers
MOQ	20 Metric Ton / Can Be Negotiated
Supply Ability	15,000 Metric Ton/Month
Date of Delivery	7 days(Qty within 1000 Metric Ton) or According To The Quantity
Port of Shipment	Tianjin, China
Payment	L/C T/T

Q:What is the maximum length of steel pipes available?: The maximum length of steel pipes available can vary depending on the manufacturer and specific application. However, steel pipes can typically be found in lengths ranging from 20 feet (6 meters) to 40 feet (12 meters) or even longer in some cases.

Q:What's the actual size of the DN25?: Steel pipe is not only used to transport fluid and powder solid, exchange heat energy, and manufacture mechanical parts and containers, but also is an economic steel. It can reduce weight and save 20 to 40% of metal by using steel pipe to make building structure, network frame, prop and mechanical support. Moreover, it can realize factory mechanization construction. Using steel pipe to manufacture road bridge can not only save steel, simplify construction, but also greatly reduce the area of coating protective layer, save investment and maintenance cost.

Q:How are steel pipes used in the construction of underground utilities?: Steel pipes are commonly used in the construction of underground utilities due to their durability and strength. They are used to transport various substances such as water, gas, and sewage underground, ensuring efficient and reliable distribution. Steel pipes are resistant to corrosion and can withstand high pressure, making them ideal for underground applications where they need to withstand the weight of the soil and other environmental factors. Additionally, steel pipes are easy to install and maintain, making them a cost-effective choice for underground utility construction projects.

Q:What are the different testing methods for steel pipes?: Some of the different testing methods for steel pipes include visual inspection, ultrasonic testing, magnetic particle testing, radiographic testing, and hydrostatic testing.

Q:What are the different methods of coating steel pipes?: There are several different methods of coating steel pipes, including fusion bonded epoxy (FBE) coating, liquid epoxy coating, polyurethane coating, and three-layer polyethylene (3LPE) coating.

Q:What are the factors to consider when selecting pipe materials for corrosive environments?: When selecting pipe materials for corrosive environments, there are several important factors to consider in order to ensure the longevity and effectiveness of the piping system. 1. Corrosion Resistance: The most crucial factor to consider is the corrosion resistance of the pipe material. It is essential to choose a material that is highly resistant to corrosion, as corrosive environments can cause significant damage to pipes over time. Materials such as stainless steel, fiberglass, and certain types of plastics like PVC and CPVC are known for their excellent resistance to corrosion. 2. Chemical Compatibility: It is important to assess the chemical compatibility of the pipe material with the specific corrosive environment it will be exposed to. Different materials have different resistance levels to various chemicals, so it is crucial to ensure that the chosen material can withstand the specific chemicals present in the environment. Consulting chemical compatibility charts and seeking expert advice can help in making the right material selection. 3. Temperature and Pressure Requirements: The temperature and pressure conditions within the corrosive environment should also be considered when selecting pipe materials. Some materials may have limitations in terms of their temperature and pressure resistance, and exceeding these limits can lead to pipe failure. It is important to choose a material that can handle the required temperature and pressure ranges without compromising its structural integrity. 4. Cost: The cost of the pipe material and its installation should also be taken into account. While certain materials may be highly resistant to corrosion, they can also be more expensive. It is essential to strike a balance between the desired level of corrosion resistance and the available budget. 5. Maintenance and Durability: The maintenance requirements and overall durability of the pipe material should be evaluated as well. Some materials may require more frequent inspections, cleaning, or repairs compared to others. Considering the anticipated lifespan of the piping system and the ease of maintenance can help in selecting a material that will provide long-term reliability and cost-effectiveness. In conclusion, when selecting pipe materials for corrosive environments, one should consider factors such as corrosion resistance, chemical compatibility, temperature and pressure requirements, cost, and maintenance and durability. By carefully evaluating these factors, one can choose a pipe material that best suits the specific corrosive environment and ensures a reliable and long-lasting piping system.

Q:What are the different methods of joining steel pipes together?: There are several methods of joining steel pipes together, including welding, threading, flange connection, and mechanical coupling.

Q:Can steel pipes be used for the construction of offshore wind farms?: Yes, steel pipes can be used for the construction of offshore wind farms. Steel pipes are commonly used for various offshore applications, including the installation of wind turbine foundations, subsea cables, and other infrastructure. They offer durability, strength, and resistance to corrosion, making them suitable for the challenging marine environment. Additionally, steel pipes can be easily fabricated and installed, allowing for efficient construction processes in offshore wind farm projects.

Q:What is the difference between seamless steel pipes and seamless stainless steel pipes?: The main difference between seamless steel pipes and seamless stainless steel pipes lies in their composition. Seamless steel pipes are made from carbon steel, which contains mainly iron and carbon. On the other hand, seamless stainless steel pipes are made from an alloy of iron, chromium, and other elements like nickel and molybdenum. The addition of these elements in stainless steel pipes provides enhanced corrosion resistance, making them suitable for applications where corrosion is a concern. Additionally, stainless steel pipes typically have a higher tensile strength and better heat resistance compared to regular steel pipes.

Q:How to perform nondestructive inspection of steel tubes: The detection principle is based on the ferromagnetic material is magnetized in a magnetic field, discontinuity materials and products (defects) produce leakage magnetic field, magnetic powder adsorption (or detecting) and appear (or on the instrument display). Therefore, this method can only be used for the inspection of the surface or near surface defects of ferromagnetic materials or products.

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