ASS®-Prime
For maximum tarnish-free pipes

The inflatable forming system ASS®-Prime from Holzer ASS® is a forming system with a modular design that is suitable for a wide range of applications. Through years of experience with the forming systems available on the market, the ASS® -Prime forming system has been further developed to meet the requirements for the best possible freedom from tarnishing colours.
Inflatable forming system ASS®-Prime
for pipe Ø 50 mm - 640 mm
The inflatable forming system ASS®-Prime finds its greatest strength in 30 years of experience, KNOW HOW and the manufacturer's interest in offering an inflatable forming system that aims to achieve the difficult-to-achieve absence of temper colour on the back of the weld seam in the pipes. Thus ASS®-Prime particularly suitable for the requirements of the pharmaceutical and food industries.
Sizes & versions
After positioning the forming unit (localisation of the pipe centre using phosphor tape on the connecting hose), the two forming bags (primary and secondary bag) are filled with forming gas or air.
Pipe weld purging system for the highest welding quality
Efficient welding preparation with impact purging
One system for 6 applications
With the 6 application options that have been developed, the "blow-out at the back" & "blow-out at the front" are about the possibility of adapting the blow-out direction to the respective situation.
The T-PANEL application is similar to the "BACK OUTLET" and "FRONT OUTLET". With the horizontally mounted forming unit, the blow-out direction can be selected as required. The individual moulding bubble is designed so that flushing of the moulding chamber and blow-out is possible in this application.
System overview (rear air outlet)
Gas supply line complete with pull rope, double branch valve for filling hose and gas hose as well as connection to the gas cylinder, filling hose with pressure gauge and pressure relief valve. Plug-in connections to primary bag with screwable chain link.
A cover hose encases the filling hose, gas hose and pull rope with screwable chain link for safe and easy handling. Available in 3 lengths (10m, 20m and 30m). Special lengths can also be manufactured on request. Standard length is 10m.
Primary bag with plug-in connections for filling and gas hoses as well as a pull loop for secure positioning and removal of the forming unit in and out of the pipe, plug-in connections for sintered metal and pull loop for connecting cable.
Connecting hose with Phosporband (30cm/60cm) and with plug connections to secondary bag and sintered metal.
Connecting cable with screwable chain links for a secure connection of the forming unit
Sintered metal with plug-in connections to primary bag and connecting hose
Secondary bag with plug connection to connecting hose and pull loop. Diffuser for rear blow-out, safety valve and pull loop for safe removal of the forming unit.