The tunnel excavation will also proceed by drilling small-diameter steel pipes at a constant small gap around the planned cross-section using horizontal boring methods.
We would like to introduce the "Steel Pipes for Pipe Roof Construction" handled by Tohshin Industrial Co., Ltd. Tunnel excavation is carried out in advance, with small-diameter steel pipes being drilled and installed at a constant small gap around the outer perimeter of the planned cross-section using horizontal boring methods. The steel pipes used for reinforcing the ground with cement milk and other materials employ a two-thread (lead 20mm) screw for easy installation. 【Features】 - Tunnel excavation is carried out in advance, with small-diameter steel pipes being drilled and installed at a constant small gap around the outer perimeter of the planned cross-section using horizontal boring methods. - Steel pipes used for reinforcing the ground with cement milk and other materials utilize a two-thread (lead 20mm) screw for easy installation. *For more details, please refer to the PDF document or feel free to contact us.
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Toshin Industrial Co., Ltd. provides excellent pipe processing technology across a wide range of fields. Since our establishment, we have consistently aimed to create products from the customer's perspective, earning significant recognition and high trust from everyone. Please feel free to contact us with any requests.
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