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

The ASS®Prime pipe weld purging system enables the highest welding quality by quickly reducing the residual oxygen content to a minimum of around 5 ppm, which prevents discolouration and other effects at the weld root. The efficient design and increased gas flow ensure a significantly reduced purge time, up to 50% faster than conventional systems, and simplify the entire work process.

Efficient welding preparation with impact purging

ASS®-Prime has been specially developed for butt forming, in which an increased gas flow (approx. 35-40 l/min) quickly and efficiently flushes the forming chamber. This process displaces oxygen and moisture, creating an oxygen-free environment for the welding process. Shock forming saves time during preparation and ensures high weld seam quality by preventing discolouration and other undesirable effects.

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.

Rear air outlet
Front air outlet
T-piece
Reduction
End piece
Barrier

System overview (rear air outlet)

1
Gas supply line

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.

2
Primary bag

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.

3
Connecting hose

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

4
Sintered metal

Sintered metal with plug-in connections to primary bag and connecting hose

5
Secondary bag

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.

Advantages of ASS®-Prime

The forming system is easy to operate and the rinsing process is straightforward. In our step-by-step guide, we show you how to proceed in order to achieve the best welding results.

ASS®-Prime - Made by Holzer

The ASS®-Prime forming system is produced entirely in Upper Austria. From design and development to sewing and assembly - all steps take place in our modern production facility. We attach great importance to the regional sourcing of components. This regional production guarantees the highest quality, flexibility and fast delivery times, which benefits our customers all over the world

Preparation for the flushing process

Our system is used in many industries and different applications. Based on practical experience, a wide range of possible applications and advantages can be recognised, which underline the flexibility and performance of the system.

Brochures & Download

Operating instructions
ASS Prime 1
Data sheet ASS Prime 1
Rear air outlet

Application example

Our system is used in many industries and different applications. Based on practical experience, a wide range of possible applications and advantages can be recognised, which underline the flexibility and performance of the system.

ASS®-Prime - at a glance

Holzer ASS® Service for your practice

Your efficient partner for services, consulting and trade for metalworking companies and trade. The company Holzer ASS®based in Upper Austria and represented in Vienna and Styria, is a specialist company in the fields of forming, centring, measuring and welding for pipeline, boiler and tank construction.

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