1. What is a welded pipe?
A welded pipe is a cylindrical pipe made by welding steel plates or strips into a seamless circular shape. It is widely used in various industrial and civil fields due to its simple production process, low cost and stable performance.
2. What materials are your welded pipes made of?
Our welded pipes are mainly made of carbon steel (such as Q235, A36, API 5L GR.B), stainless steel (such as 304, 316L), alloy steel and other materials. We can also customize pipes according to your specific material requirements.
3. What are the common specifications of your welded pipes?
The common outer diameter ranges from 15mm (1/2 inch) to 2000mm, and the wall thickness ranges from 1.5mm to 50mm. Both seamless and ERW (Electric Resistance Welded) pipes are available, and we can provide custom specifications based on your orders.
4.What is the difference between ERW and SAW welded pipes?
ERW (Electric Resistance Welded) pipes are welded by high-frequency current, with fast welding speed, smooth surface and suitable for small and medium diameter pipes. SAW (Submerged Arc Welded) pipes are welded under flux, with strong weld strength, thick wall thickness and suitable for large diameter and heavy-duty pipes.
5. What is the maximum pressure that your welded pipes can bear?
The pressure-bearing capacity depends on the material, wall thickness and diameter of the pipe. For carbon steel ERW pipes, the maximum working pressure can reach 10-15 MPa, while SAW pipes can bear higher pressure (up to 20 MPa or more) according to the wall thickness and material grade.
