Renovation of gas pipes

Innovative solutions with starline® technology

We have developed special fabric hoses, adhesives and matching technical equipment for the following gas pipe renovation applications:

starline®HPL-G: Renovation of high-pressure pipes
starline®2000: Renovation of supply lines
starline®200: Renovation of connecting pipes

The main steps in pipe rehabilitation using these methods are inspection of the pipe using camera inspection, thorough cleaning, lining with the starline® fabric hose, pressure testing of the rehabilitated pipe and, if necessary, opening of outlets and connections using a robot from inside the pipe.

Incidentally, future maintenance and repair work can be carried out using standard tools and does not require any special attachments.

starline®HPL-G

starline®2000/ starline®2000 EXPRESS

starline®200

starline® STRUCTURE-G

starline®HPL-G for gas transport lines

The starline®HPL-G processis used to renovate high-pressure steel gas pipes with an operating pressure of up to 30 bar using a high-strength fabric hose. Existing and future corrosion breakthroughs of up to 50 mm, which represent an enormous risk potential, are eliminated efficiently, quickly and permanently using this process.

The weld seam fracture resistance is increased. With the starline®HPLtechnology specially developed for the rehabilitation of transport pipelines, only a small excavation is required at a maximum distance of 180 m to thoroughly clean the pipeline and installation lengths of up to 600 m are possible for the fabric hose. As the diameter of the fabric hose is designed to match the inside diameter of the pipe to be rehabilitated, a crease-free lining is achieved despite the high-strength and seamless fabric hose. Thanks to the full-surface bonding of the hose, migration behind the pipe is impossible and the pipe can be subsequently drilled without any problems using conventional tools. It is even possible to weld on new outlets, as the welding temperature only has a localized effect on the fabric hose.

starline®2000 and starline®EXPRESS for supply lines

This method is used in particular to permanently rehabilitate supply lines made of gray cast iron, steel and ductile cast iron up to DN 600 and up to 4 bar operating pressure using a flexible fabric hose. For tight inner-city conditions, a mobile technology is used that impresses with its speed, cost-effectiveness, reliability and environmental compatibility. Together with the innovative and globally unique starline®EXPRESS rapid curing, the supply interruption for gas customers is reduced to an absolute minimum. This technology is therefore particularly suitable for standard supply cross-sections and high connection densities. rehabilitation sections are separated, inspected, cleaned, rehabilitated, tested, outlets opened without trenches and the pipeline put back into operation within one working day. This eliminates the need for expensive replacement supply measures and the necessary operational safety is permanently restored within just one day. As the special adhesive system cures without heating the entire pipeline, harmful residual thermal stresses in the pipe body are eliminated.

starline®200 for gas connection pipes

The starline®200 processis a durable renovation technology for connection lines in gas distribution with a fabric hose designed for this purpose and installation technology tailored to it. Connecting pipes made of steel with a diameter of DN 20 to DN 65, lengths of up to 60 m and, depending on the dimensions, with up to five 90° bends are rehabilitated using this method.

The decisive advantage of the process is that, depending on the dimensions, up to 5 bends with an angle of 90° can be lined almost wrinkle-free and over the entire surface. This is possible thanks to the specially developed tube system with a special weave and coating. The entire process sequence and the special process technology, including a very light manual pressure drum, ensure that the customer is supplied with gas again within a few hours. Depending on local conditions, more than one connection can be rehabilitated per working day. As a rule, only one excavation pit with minimal dimensions is required on the supply line.

Renovation of gas pipes up to DN 600 at 30 bar

Innovative solutions with starline® technology

starline®HPL-G for gas transport lines