Helcor Steel Pipe Culvert

Corrugated pipe adopt hot galvanized steel belt for forming, or after forming then hot galvanization treatment.

Appearance: Clean, smooth, and the zinc coating uniformity.

Size tolerance: Corrugation pitch tolerance is ±3mm, diameter tolerance is ±2%

Application: The helical corrugated steel pipe, after drilling holes, apply to playground, tennis court, tunnel, park and other big place, as the engineer product for water seep in the sponge city, it is popularized because of its good technical and high pressure strength.

- YONGXI Helcor Steel Pipe Culvert

If need to drill holes on pipe, the holes need to be according with:

Diameter of hole should be 8±1.5mm
The hole need on the top of the corrugation which near the seam, and need to distribute uniformity around the vertical axle
Each line of holes need to be extent to the point which is smaller than 150mm to the pipe end
The first holes line need to be on the point which is higher than 22.5 degree

Rolling edge seam should according with the request as below:

The edge of the steel band which forming the pipe, it is treatment continuously to joint together, the joint edge is locked to each other