Rectangular Hollow Section Pipe 6 meter

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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 grades of steel used for pipes?: The different grades of steel used for pipes include carbon steel, alloy steel, and stainless steel.

Q:What are the common methods for inspecting the integrity of steel pipes?: There are several common methods used to inspect the integrity of steel pipes. These methods are crucial to identify any defects or weaknesses in the pipes that could compromise their structural integrity and potentially lead to failures or leaks. 1. Visual Inspection: This is a basic method where an inspector visually examines the external surface of the steel pipe for any signs of damage, such as corrosion, cracks, or deformities. It is a quick and cost-effective method, but it may not detect internal defects. 2. Ultrasonic Testing (UT): UT is a non-destructive testing method that uses high-frequency sound waves to detect flaws in steel pipes. A transducer sends ultrasonic waves into the pipe, and any reflected waves are analyzed to identify defects like cracks or voids. UT is effective for both internal and external inspections and can provide accurate measurements of defect size and location. 3. Magnetic Particle Inspection (MPI): This method is mainly used to detect surface or near-surface defects in ferromagnetic materials like steel. Magnetic particles are applied to the surface of the pipe, and if there is a defect, the particles will gather around it, creating a visible indication. MPI is particularly useful for detecting cracks and other discontinuities that may not be easily visible to the naked eye. 4. Radiographic Testing (RT): RT involves the use of X-rays or gamma rays to inspect the internal structure of steel pipes. The rays pass through the material, and a radiographic film or a digital detector records the image. This method is effective in detecting internal defects such as cracks, voids, or inclusions. However, it requires proper safety precautions due to the use of radiation. 5. Eddy Current Testing (ECT): ECT is a non-destructive testing method that uses electromagnetic induction to assess the integrity of steel pipes. An alternating current is passed through a probe, creating an electromagnetic field. Any changes in the electrical conductivity or magnetic permeability of the material due to defects are detected by the probe, providing information about the pipe's condition. These are some of the common methods used for inspecting the integrity of steel pipes. Each method has its advantages and limitations, and the choice of inspection method depends on factors such as the type of defect to be detected, access to the pipe, and budget constraints. Regular inspection and maintenance using these methods are crucial to ensure the safe and reliable operation of steel pipe systems.

Q:What are the different types of pipe coatings used for corrosion protection?: There are several different types of pipe coatings used for corrosion protection. These coatings are applied to the exterior surface of pipes to prevent or delay corrosion, ensuring the longevity and integrity of the pipes. Some of the commonly used pipe coatings for corrosion protection include: 1. Fusion-Bonded Epoxy (FBE) Coatings: FBE coatings are widely used for corrosion protection due to their excellent adhesion and resistance to chemicals, moisture, and abrasion. These coatings are applied by heating the pipe and spraying it with epoxy powder, which then melts and forms a protective layer upon cooling. 2. Polyethylene (PE) Coatings: PE coatings are known for their flexibility and resistance to impact and chemicals. These coatings are typically applied by extrusion or wrapping methods and provide excellent resistance against water, soil, and other corrosive substances. 3. Polyurethane (PU) Coatings: PU coatings offer good resistance to chemicals, moisture, and mechanical damage. They are commonly used for underground pipelines and are applied by spraying or brush coating methods. 4. Coal-Tar Enamel Coatings: Coal-tar enamel coatings are suitable for protecting pipes exposed to highly corrosive environments such as marine conditions or underground applications. They are typically applied by hot or cold wrapping methods and provide excellent resistance to water, acids, and alkalis. 5. Metallic Coatings: Metallic coatings such as zinc, aluminum, or zinc-aluminum alloys are often used as sacrificial coatings to protect the underlying steel pipes. These coatings corrode preferentially, sacrificing themselves to protect the pipe from corrosion. 6. Asphalt Coatings: Asphalt coatings provide a robust barrier against moisture, chemicals, and soil. They are typically applied by hot or cold wrapping methods and are commonly used for underground pipelines. It is important to consider factors such as the specific environment, temperature, and expected lifespan of the pipes when selecting the appropriate type of pipe coating for corrosion protection.

Q:Can steel pipes be used for roller coaster tracks?: Yes, steel pipes can be used for roller coaster tracks. In fact, they are one of the most common materials used for roller coaster tracks due to their strength, durability, and versatility. Steel pipes provide excellent support and stability for the roller coaster cars, ensuring a safe and thrilling ride experience for passengers. Additionally, steel pipes can be easily shaped and welded to create various track designs, including loops, twists, and turns, making them ideal for creating exhilarating roller coaster layouts. Furthermore, steel pipes are resistant to corrosion and can withstand harsh weather conditions, making them a reliable choice for outdoor roller coasters. Overall, steel pipes are a popular and reliable choice for roller coaster tracks, offering both safety and excitement for riders.

Q:What is the creep resistance of steel pipes?: The creep resistance of steel pipes refers to their ability to withstand deformation or strain under long-term exposure to high temperatures and constant stress. Steel pipes exhibit good creep resistance due to their high melting point and structural integrity, making them suitable for applications that involve elevated temperatures and prolonged use.

Q:What is the difference between seamless and ERW steel pipes?: Seamless steel pipes are manufactured without any welded joints, resulting in a continuous and strong structure. On the other hand, ERW (Electric Resistance Welded) steel pipes are created by welding the edges of the steel strip together to form a pipe. While seamless pipes offer better strength and durability, ERW pipes are more cost-effective and suitable for less demanding applications.

Q:How are steel pipes coated for insulation purposes?: Steel pipes are commonly coated for insulation purposes using various methods and materials. One common method is the application of a thermal insulation coating. This coating is usually a high-performance polymer or epoxy-based material that is applied to the surface of the steel pipe. Before the coating is applied, the steel pipe is usually cleaned thoroughly to remove any dirt, grease, or rust that may be present on its surface. This is typically done through a process called abrasive blasting, where small particles are propelled at high speed to remove contaminants and create a clean, rough surface for the coating to adhere to. Once the surface is prepared, the thermal insulation coating is applied using different techniques such as spraying, brushing, or rolling. The coating is carefully applied in multiple layers to ensure proper coverage and thickness. This helps to create a barrier between the steel pipe and the external environment, preventing heat transfer and minimizing energy loss. In addition to thermal insulation coatings, steel pipes can also be coated with materials such as polyurethane foam or mineral wool. These materials provide excellent thermal insulation properties and are often used in applications where high-temperature resistance is required. Overall, steel pipes are coated for insulation purposes through a combination of surface preparation and the application of specialized coatings. These coatings help to reduce heat loss, increase energy efficiency, and protect the steel pipe from corrosion and other environmental factors.

Q:What are the common fittings and accessories used with steel pipes?: Some common fittings and accessories used with steel pipes include couplings, elbows, tees, reducers, flanges, and valves. Additionally, accessories such as pipe hangers, brackets, clamps, and gaskets are often used to support and secure the pipes.

Q:What are the environmental benefits of using steel pipes?: There are several environmental benefits of using steel pipes: 1. Durability: Steel pipes have a long lifespan, which reduces the need for frequent replacements. This helps to conserve resources and reduces the amount of waste generated. 2. Recyclability: Steel is one of the most recycled materials in the world. When steel pipes reach the end of their life, they can be easily recycled and used to manufacture new steel products. This reduces the demand for raw materials and saves energy that would otherwise be required for the production of new materials. 3. Reduced carbon emissions: Steel pipes have a low carbon footprint compared to other materials like concrete or plastic. The manufacturing process for steel pipes produces fewer greenhouse gas emissions, contributing to a lower carbon footprint overall. 4. Resistance to corrosion: Steel pipes have high resistance to corrosion, which means they require less maintenance and repair compared to other materials. This reduces the use of chemical coatings and treatments that can have negative environmental impacts. 5. Water conservation: Steel pipes are commonly used for water supply and distribution systems. They have smooth interiors that minimize friction, reducing the amount of energy required to pump water through the pipes. This helps to conserve energy and decrease the carbon emissions associated with water transportation. 6. Fire resistance: Steel pipes are inherently fire-resistant, which makes them a safer choice for many applications. In the event of a fire, steel pipes can help to contain the spread of flames and minimize damage to the environment. Overall, the use of steel pipes offers numerous environmental benefits such as durability, recyclability, reduced carbon emissions, water conservation, and fire resistance. These factors make steel pipes a sustainable choice for various infrastructure projects.

Q:What is hot rolled steel pipe? What is a cold drawn steel tube?: General use seamless steel tube: is with 10, 20, 30, 35, 45# and other high-quality carbon steel, 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot-rolled or cold rolled. Seamless tubes made of low carbon steel, such as 10, 20, are mainly used for fluid delivery pipelines. 45. Seamless tubes made of medium carbon steel such as 40Cr, used for the manufacture of mechanical parts, such as parts of automobiles and tractors. General use of seamless steel pipe to ensure the strength and flattening test. Hot rolled steel tubes are delivered in hot rolling or heat treated conditions. Cold rolled in heat treated state.

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