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All About ERW Steel Tubes by Natalie Eastaugh





All About ERW Steel Tubes by
Article Posted: 09/26/2012
Article Views: 73
Articles Written: 696
Word Count: 552
Article Votes: 1
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All About ERW Steel Tubes


 
Business,Manufacturing
The idea of ERW steel tubes dates back to 1920, but the practical process of galvanization started in 1962. These days ERW steel tubes are manufactured in large factories on mass level. Most of the world's ERW steel pipes and tubes come from China.

Manufacturing Process of ERW Steel Tubes

The whole process begins as a flat steep strip that is slit to the right breadth for achieving perfect end tube diameter. Later on the steel strip is sent to the weld box where electrical resistance from the steel tube is used to form thermal energy. The thermal energy is used for welding the strips of steel to form a strong tube, which is similar in strength to the actual strip of steel. The tube is smoothened by removal of welding residue known as flash. In the next phase steel tubes are sent to a cooling unit where they are passed through a coolant for lowering temperature. After cooling all the steel tubes, they are sent to finishing rolls for change of shape. Finally, all the tubes are coated with an anti-rust liquid for long life, and then cut into required lengths. So, the name ERW (electrical resistance welded) is due to the welding technique that uses electrical resistance from the steel tube for creation of heat that will ultimately weld steel strips.

Benefits of ERW Steel Tubes

The biggest quality of ERW steel tubes is that they are welded in the best manner, and the bond is often stronger than the bond between particles of the steel strip. These strips are available in several shapes and sizes to suit requirements of customers. Commonly available ERW steel tubes vary in diameter from 2.375" to 24", while the lengths can be up to 100 feet long. These tubes aren't just stronger as compared with seamless ones, but they are also cheaper in price. Such tubes are most commonly used as line pipes. Mostly these steel tubes are used in fencing, line pipes, oil rigs, commercial construction, domestic use, and agricultural industry.

Varieties

ERW steel tubes are available in a variety of shapes, sizes, and qualities. Commonly available shapes of such pipes are circular, octagonal, square, rectangular, and oval. These pipes undergo a number of quality tests before being supplied into the market. Common tests include straightness check, ultrasonic weld check, bevel check, micrometre check, and hydro tests. After thorough evaluation these pipes are categorized and sold on different rates depending upon their quality. Buyers purchase pipes depending upon their usage. Some will be in need of an average pipe that can be used to transfer waste, while others may need a high grade ERW steel tube for industrial use. Prices of these tubes depend upon their quality, as high quality tubes will be used in large commercial projects, while low quality ones will be used for fencing or as water lines etc. Purchasing an ERW steel tube is not a difficult task, they can easily be found at local hardware stores, and bulk buyers can place their orders online. Large ERW tube manufacturers provide the facility to settle transactions online by offering several payment and delivery options to bulk buyers.

Visit our website for more information on our steel manufacturing products and services and for more about ERW steel tubes

Related Articles - erw steel tubes, tube manipulation,

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