The wall thickness of the header pipe in the area of the hot tap has to have enough remaining wall thickness to be acceptable for welding. UT (ultrasonic) wall thickness measurements should be made within the area within the bounds of the limits of branch reinforcement and the nozzle outside diameter. The remaining wall thickness of the header pipe within this area should be adequate for the following:

1. Containing the pressure and preventing burn-through when welding on the operating line.
2. Adequate for the pipe design conditions based on the applicable code.
3. Withstanding the increased metal temperature generated during the hot tap welding and cutting operations.
4. Pressure testing of the nozzle assembly.

Application – Dewatering
Size – 6″ & 4″
Available lengths – 6 mtr & 3 mtr