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1. All About ERW Steel Tubes
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.

2. 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.

3. 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.

4. 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. options to bulk buyers.

5. 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