ASTM A500/JIS/EN Rectangular hollow section/ Welded pipe

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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 are the different strategies for pipe laying using steel pipes?: Various strategies exist for laying steel pipes, each tailored to specific environments and needs. Here are a few commonly used approaches: 1. Open Trench: The traditional and widely employed method involves digging a trench along the desired pipeline route. Steel pipes are then placed in the trench, aligned, and welded together. This technique allows for easy access, maintenance, and repair of the pipeline. 2. Direct Pipe: This method is utilized when the pipeline needs to pass beneath obstacles like rivers or highways. It entails drilling a borehole from one side to the other while simultaneously laying the steel pipe. The pipe is subsequently pulled through the borehole, resulting in a continuous pipeline. 3. Horizontal Directional Drilling (HDD): HDD is employed when the pipeline must be installed beneath existing infrastructure or environmentally sensitive areas. A pilot hole is drilled horizontally, and the steel pipe is then pulled through using a reaming tool. This approach minimizes surface disruption and reduces environmental impact. 4. Sliplining: This technique involves inserting a smaller diameter steel pipe into an existing larger pipe. The smaller pipe is pushed or pulled into the larger one, providing a new corrosion-resistant lining. Sliplining is commonly used for rehabilitating deteriorated or damaged pipelines. 5. Microtunneling: Similar to HDD, microtunneling employs a microtunnel boring machine (MTBM) that simultaneously excavates the soil and installs the steel pipe. This method is frequently used for precise pipe laying, particularly in urban areas with limited space. 6. Jacking: Jacking, also referred to as pipe jacking or pipe ramming, is suitable for installing steel pipes in soil conditions that are unsuitable for open trenching. Hydraulic jacks or pneumatic rams are used to push the steel pipe into the ground. Jacking is commonly employed for crossing under railways, roads, or buildings. 7. Offshore Pipeline Laying: When it comes to subsea applications, various techniques can be employed, including S-lay, J-lay, or reel-lay. These methods involve deploying the pipeline from a vessel, either vertically or at an inclined angle, and welding the steel pipes together as they are lowered to the seabed. Each strategy possesses unique advantages and considerations, depending on factors such as terrain, environmental impact, existing infrastructure, and project requirements. It is crucial to thoroughly assess these factors and select the most appropriate pipe laying strategy to ensure the safe and efficient installation of steel pipes.

Q: What is the maximum length of steel pipes available?: The maximum length of steel pipes available can vary depending on the specific manufacturer and supplier. However, in general, steel pipes can be found in lengths ranging from 18 feet to 40 feet or even longer.

Q: How are steel pipes used in the manufacturing of bicycles?: Steel pipes are commonly used in the manufacturing of bicycles as they provide strength, durability, and flexibility. They are used to create the frame, handlebars, and other structural components of the bike. The steel pipes are cut, shaped, and welded together to form the frame, providing a sturdy and reliable structure for the bicycle.

Q: How are steel pipes used in the construction of stormwater drainage systems?: Steel pipes are commonly used in the construction of stormwater drainage systems due to their durability and strength. These pipes are used to convey stormwater from various sources, such as streets and rooftops, to designated discharge points, preventing flooding and directing the water away from structures. Steel pipes are ideal for handling the high flow rates and heavy loads associated with stormwater runoff, making them an essential component in the construction of efficient and reliable drainage systems.

Q: How are steel pipes installed underground?: Steel pipes are installed underground through a process called trenching, where a trench is dug in the ground according to the desired pipe route. The trench is then prepared by removing any hindrances and ensuring a level base. The steel pipes are laid into the trench, with proper alignment and connections between sections. Once in place, the trench is backfilled with soil, compacted, and any necessary restoration work is done on the surface.

Q: What are the dimensions of a standard steel pipe?: The dimensions of a standard steel pipe can vary depending on its intended use, but common dimensions include a nominal size (such as 1/2 inch, 1 inch, 2 inches, etc.) and a schedule number indicating its wall thickness (such as Schedule 40 or Schedule 80). The outside diameter of the pipe can range from small sizes of less than half an inch to large sizes of several feet. The length of a standard steel pipe is typically 21 feet, although shorter lengths are also available.

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: Can steel pipes be used for conveying solid materials?: Yes, steel pipes can be used for conveying solid materials. Steel pipes are known for their durability and strength, making them suitable for transporting various solid materials such as ores, grains, coal, and construction materials. The smooth interior of steel pipes allows for efficient flow and minimal friction, making them a preferred choice in industries like mining, agriculture, and construction.

Q: What is the difference between black steel pipe and galvanized steel pipe?: The main difference between black steel pipe and galvanized steel pipe lies in their coating. Black steel pipe is untreated and has a dark, matte appearance, while galvanized steel pipe is coated with a layer of zinc to prevent rusting and has a silver, shiny appearance. This coating makes galvanized steel pipes more durable and suitable for outdoor use, while black steel pipes are commonly used for indoor plumbing and gas lines.

Q: Can steel pipes be used for LNG terminals?: Yes, steel pipes can be used for LNG terminals. Steel pipes are commonly used in the construction of LNG terminals due to their durability, strength, and resistance to extreme temperatures. Additionally, steel pipes can effectively handle the high-pressure requirements of LNG transportation and storage.

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