Removal pipe with an economical and environmentally friendly long-length lead-in made of steel sheath.
The "AGF-STD method" involves the installation of long steel pipes with a diameter of φ114.3mm in an umbrella shape at the tunnel excavation surface. It adopts a steel casing for the terminal pipes (removal pipes) in non-widening and minimal widening construction, which is easy to handle as industrial waste, making it an economical and environmentally friendly injection-type long steel pipe method. The steel casing of the terminal pipes is made from 0.5mm thick strip steel that is continuously spiral riveted. Due to its thin-walled nature, injection holes can be arranged in a staggered pattern with a diameter of φ10mm, and slit processing in the perpendicular direction of the casing pipe, as well as axial long hole processing, can be easily performed. After excavation, the removal pipes can be relatively easily dismantled as needed, allowing for the separation of iron and internal waste materials. 【Features】 - Improved screw strength - Realization of lightweight design For more details, please contact us or download the catalog.
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【Overview】 - Long steel pipes with a diameter of φ114.3mm are installed in an umbrella shape at the tunnel excavation top. - Steel sheaths that are easy to process as industrial waste are used for terminal pipes (removal pipes) in non-widening and minimum widening construction. - An economical and environmentally friendly injection-type long steel pipe method. - The steel sheath of the terminal pipe is made by continuously crimping strip steel plates with a thickness of 0.5mm in a spiral shape. - Due to the thin-walled pipes, injection holes can be easily arranged in a staggered pattern with a diameter of φ10mm, and slit processing in the perpendicular direction of the sheath pipe and axial long hole processing can also be easily performed. - The removal pipes after excavation can be relatively easily dismantled and the iron and internal waste can be sorted as needed. ● For more details, please contact us or download the catalog.
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