• ASTM A500/JIS/EN Rectangular hollow section pipe System 1
ASTM A500/JIS/EN Rectangular hollow section pipe

ASTM A500/JIS/EN Rectangular hollow section 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:

10*10--500*500mm

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 are steel pipes threaded for connection?
Steel pipes are threaded for connection using a process called threading, which involves cutting helical grooves into the pipe's surface. This is typically done using a machine called a pipe threading machine, which rotates the pipe while a cutting tool is held against it, creating the desired threading pattern. The threaded ends of the pipes can then be connected using fittings or couplings to create a secure and leak-proof joint.
Q: What is the production process of seamless steel tube?
The main production process for hot rolling seamless steel tube (the main inspection):Tube preparation and check delta to billet heating, heating, rolling, perforated pipe, steel pipe and heat treatment, diameter (minus) Delta to finished tube straightening, finishing and inspection of delta (nondestructive, physicochemical, Taiwan inspection and warehousing)
Q: How are steel pipes tested for mechanical strength?
Steel pipes are tested for mechanical strength through various methods such as tensile testing, hydrostatic testing, and non-destructive testing. Tensile testing involves pulling the pipe until it breaks to measure its ultimate tensile strength. Hydrostatic testing involves pressurizing the pipe with water to check its ability to withstand high internal pressures. Non-destructive testing methods like ultrasonic testing or magnetic particle inspection are also used to detect any defects or weaknesses in the pipe without causing damage. These tests ensure that steel pipes are strong enough to withstand the required mechanical stresses.
Q: What is the average lifespan of steel pipes in different applications?
The average lifespan of steel pipes in different applications can vary significantly depending on factors such as the type of application, the environment it is exposed to, and the level of maintenance. However, in general, steel pipes can last anywhere from 20 to 100 years or more, making them a durable and reliable choice for various industries and infrastructure projects.
Q: Can steel pipes be used for gas distribution?
Yes, steel pipes can be used for gas distribution. Steel pipes are commonly used for transporting natural gas and other gases due to their high strength, durability, and resistance to corrosion. They can withstand high pressure and are suitable for long-distance gas distribution networks. However, it is important to ensure proper materials and installation techniques are used to prevent any potential safety hazards.
Q: What are the common protective coatings used on the inner surface of steel pipes?
The common protective coatings used on the inner surface of steel pipes include epoxy, polyurethane, and cement mortar coatings. These coatings provide corrosion resistance, prevent the formation of scales, and improve the durability and lifespan of the pipes.
Q: Can steel pipes be used for sewage and wastewater systems?
Yes, steel pipes can be used for sewage and wastewater systems. Steel pipes are durable, strong, and resistant to corrosion, making them suitable for transporting sewage and wastewater. They are commonly used in various industrial and municipal applications due to their ability to withstand high pressure and provide long-lasting performance.
Q: What is the role of steel pipes in the transportation of water?
Steel pipes are of utmost importance in the transportation of water due to their durability and strength. They find extensive use in diverse water supply systems, including municipal water distribution networks, irrigation systems, and industrial water transportation. One of the primary benefits of steel pipes lies in their capacity to endure high pressure and deliver water reliably over long distances. The strength of steel enables the construction of pipelines with larger diameters, facilitating the efficient movement of substantial water volumes. Additionally, steel pipes exhibit remarkable resistance to corrosion, a critical characteristic when conveying water that may contain different minerals, chemicals, or contaminants. The corrosion-resistant properties of steel pipes ensure that the water quality remains uncompromised throughout the transportation process. Furthermore, steel pipes offer exceptional structural integrity, rendering them suitable for both underground and above-ground installations. They can withstand extreme weather conditions, seismic activity, and heavy loads, thereby ensuring the longevity and dependability of the water transportation system. Moreover, steel pipes are easy to install and maintain, apart from being robust and durable. They can be seamlessly welded together, resulting in a pipeline with minimal leakage points. Regular inspections and maintenance help identify potential issues or damages, guaranteeing an uninterrupted flow of water. In conclusion, steel pipes play a critical role in water transportation, serving as a strong and reliable conduit. Their ability to withstand high pressure, resist corrosion, and maintain water quality make them an ideal choice for various water supply systems, contributing to the efficient and sustainable distribution of water resources.
Q: How are steel pipes inspected for quality?
The quality of steel pipes undergoes a thorough examination process involving diverse techniques and standards. Trained professionals conduct visual inspections to scrutinize the pipes for visible defects such as cracks, dents, or surface irregularities. This examination guarantees that the pipes meet the required specifications and are devoid of any visible flaws. Furthermore, non-destructive testing (NDT) methods are utilized to assess the internal and external quality of the steel pipes. Among the commonly used NDT techniques, ultrasonic testing stands out. This method involves transmitting ultrasonic waves through the pipes to detect any internal defects or inconsistencies in the material. It effectively identifies issues such as variations in wall thickness, inclusions, or weld defects that could compromise the pipe's integrity. Another widely employed NDT technique is magnetic particle inspection. By utilizing magnetic fields and iron particles, this method identifies surface cracks or flaws in the steel pipes. It is particularly effective for detecting defects in ferromagnetic materials and can be performed on both the outer and inner surfaces of the pipes. Moreover, hydrostatic testing is frequently conducted to evaluate the strength and pressure resistance of the pipes. This process involves filling the pipes with water or a suitable fluid and subjecting them to a specified pressure to check for leaks or structural weaknesses. This test ensures that the pipes can withstand the intended operational conditions without failing. In addition to these techniques, various quality control measures are implemented throughout the manufacturing process. These measures include material traceability, dimensional checks, and chemical composition analysis. They play a crucial role in ensuring that the steel pipes meet the required standards and specifications, thereby guaranteeing their quality and reliability. In summary, the inspection of steel pipes for quality involves a comprehensive approach encompassing visual inspection, non-destructive testing methods, and quality control measures. These thorough procedures enable the identification of defects, inconsistencies, or weaknesses, ensuring that the pipes meet the necessary quality standards and are suitable for their intended purpose.
Q: What are the different types of steel pipes?
There are several different types of steel pipes, including seamless pipes, welded pipes, galvanized pipes, and stainless steel pipes.

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