ERW and CEW are both welding process types. ERW stands for electric resistance welding, while CEW stands for cold electric welding. Both methods use electricity to weld metals together, but they differ in how the electricity is used.
There are significant differences in the manufacturing processes of resistance welded pipe (ERW) and cold drawn electric welded pipe (CEW). ERW pipe is formed by heating a strip of steel and passing it through rollers to form it into a cylinder. An electric charge is then used to fuse the material, welding the edges together. In contrast, the CEW process involves pulling a heated steel rod through a die, creating a seamless tube. There are pros and cons to both methods, but it mainly depends on the specific application.
2. Strength and durability
One of the most critical factors when selecting pipe is its strength and durability. ERW pipe has a smooth surface finish and is generally stronger than CEW pipe. However, CEW pipes are more resistant to external stresses such as vibration and shock. They also have a higher durability limit, meaning they can withstand greater pressures and strains than ERW pipes.
3. Cost and availability
Another important factor when choosing pipe is its cost and availability. ERW pipes are generally less expensive than CEW pipes, which makes them more popular in the market. However, in some cases, the greater durability and durability of CEW pipe may justify the additional cost. It also depends on material availability, manufacturing costs and shipping costs, which may vary by supplier and location.
Pipeline maintenance and upkeep is critical to ensuring the longevity of your pipes. ERW and CEW pipes require little maintenance, but their regulations vary widely. ERW pipes may require coating or sealing since welds are more susceptible to rust and corrosion. In contrast, CEW pipe is seamless, which reduces the chance of corrosion and leaks. However, they require regular cleaning to remove impurities and prevent clogging.