Galvanized Rectangular hollow section 20#

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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: How do steel pipes compare to other materials, such as PVC or copper?: Steel pipes are generally considered to be stronger and more durable compared to materials like PVC or copper. While PVC pipes are lightweight and easy to install, they are not as strong as steel and can be more prone to cracking or breaking. Copper pipes, on the other hand, are known for their corrosion resistance and are commonly used for plumbing systems. However, steel pipes have the advantage of being highly resistant to extreme temperatures, pressure, and damage, making them suitable for a wide range of applications, including industrial and commercial use.

Q: What are the common methods of joining steel pipes?: The common methods of joining steel pipes include welding, threading, and using mechanical couplings. Welding involves fusing the pipes together using heat, while threading involves screwing the pipes together using threads on the ends. Mechanical couplings are devices that connect the pipes together using compression or other means.

Q: What is the difference between seamless and ERW steel pipes?: Seamless steel pipes are made without any welded joints, resulting in a uniform and continuous structure. On the other hand, ERW (Electric Resistance Welded) steel pipes are created by welding the edges of the steel strip or coil together, forming a seam. This seam may be visible on the surface of the pipe. While seamless pipes are considered stronger and more reliable due to their uniform structure, ERW pipes are more cost-effective and commonly used for low to medium pressure applications.

Q: Can steel pipes be used for underground water supply systems?: Yes, steel pipes can be used for underground water supply systems. Steel pipes are durable, strong, and can withstand harsh conditions, making them suitable for underground installations. Their corrosion resistance properties and ability to withstand high pressure make them a reliable choice for transporting water underground.

Q: What are the different methods of protecting steel pipes from external damage?: There are several methods of protecting steel pipes from external damage, including coating the pipes with a corrosion-resistant material such as epoxy or polyethylene, applying a layer of protective tape, installing a cathodic protection system, using concrete or rock shielding, and implementing measures to prevent soil movement or impact damage.

Q: What are the different types of steel pipe tees?: Various plumbing and piping applications commonly utilize different types of steel pipe tees. These tees serve various purposes and offer specific functionalities. 1. Equal tee: This tee consists of three branches of the same size, ensuring an equal flow of fluid or gas through each branch. 2. Unequal tee: As suggested by its name, an unequal tee features branches of varying sizes. This allows for merging or diversion of flows with different volumes or pressures. 3. Reducing tee: This tee is deployed when the branch size is smaller than the main pipe size. It enables a reduction in size while maintaining the flow in the main line. 4. Barred tee: In situations involving the insertion or removal of a pipeline-cleaning and inspection device known as a pig, a barred tee is employed. It possesses a bar welded across one or two branches to create a bypass for the pig. 5. Lateral tee: A lateral tee has a branch angle of either 45 degrees or 90 degrees, facilitating the perpendicular alignment of the branch line with the main line. It finds extensive use in fire sprinkler systems and scenarios necessitating a change in direction. 6. Compression tee: This tee is suitable for gas or hydraulic systems, where branches are connected using compression fittings rather than welding or threading. 7. Butt-weld tee: High-pressure and high-temperature applications employ butt-weld tees. These tees are welded to the main pipe using butt-welding techniques, ensuring a robust and leak-proof connection. These represent some of the most prevalent types of steel pipe tees employed across diverse industries. The selection of the appropriate tee depends on specific project requirements, such as pipe size, flow rates, and transported materials.

Q: What are the different types of steel pipe fittings for plumbing systems?: Some common types of steel pipe fittings used in plumbing systems include elbows, tees, unions, couplings, reducers, and caps. Elbows are used to change the direction of the pipe, while tees allow for branching off into multiple directions. Unions are used to join two pipes together, couplings are used to connect two pipes of the same diameter, and reducers are used to connect pipes of different diameters. Caps are used to seal the end of a pipe.

Q: What is the process of coating steel pipes?: The process of coating steel pipes involves applying a protective layer on the surface of the pipe to prevent corrosion and increase its durability. This typically includes cleaning the pipe to remove any contaminants, followed by applying a primer to improve adhesion. The pipe is then coated with a layer of paint or a specialized coating material using a variety of techniques such as spraying, dipping, or electrostatic application. The coated pipe is then cured or dried to ensure the coating adheres properly. This process helps to ensure the longevity and performance of steel pipes in various applications.

Q: Are steel pipes suitable for wastewater pumping stations?: Indeed, steel pipes prove to be a fitting option for wastewater pumping stations. Renowned for their endurance and robustness, steel pipes excel in handling the challenging conditions and high-pressure demands within these stations. They possess the capacity to withstand the corrosive properties of wastewater while resisting harm caused by chemicals and other aggressive substances commonly present in such environments. Furthermore, steel pipes are accessible in a variety of sizes and thicknesses, enabling customization to fulfill the specific requirements of each pumping station. Moreover, the ability to easily weld and connect steel pipes ensures a secure and leak-proof system. In conclusion, steel pipes provide a dependable and enduring solution for wastewater pumping stations.

Q: How are steel pipes used in the manufacturing of machinery?: Steel pipes are used in the manufacturing of machinery for various purposes such as conveying fluids, gases, or materials, as structural components, and for heat transfer. They provide durability, strength, and resistance to corrosion, making them suitable for applications where high pressure, temperature, or heavy loads are involved.

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