How to choose the spiral pipe in the sewage project?

1. Material selection:

At present, the material for spiral pipe is Q235B, which is enough for the sewage industry. If the requirements are higher, should to use Q345B.

2. Implementation standards:

At present, the implementation standard of large-diameter spiral steel pipe for sewage discharge is 5037. If the quality requirements are higher can select the standard 9711.

3. Anti-corrosion type:

Epoxy coal tar can be selected for anti-corrosion of the outer wall, and cement mortar can be selected for anti-corrosion of the inner wall.