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, and small-diameter steel pipes are installed by drilling at a constant small gap around the planned cross-section using methods such as horizontal boring. For the steel pipes used to reinforce the ground with cement milk and other materials, we use a two-thread (lead 20mm) screw that is easy to install. 【Features】 - Tunnel excavation is carried out in advance, and small-diameter steel pipes are installed by drilling at a constant small gap around the planned cross-section using methods such as horizontal boring. - Steel pipes used to reinforce the ground with cement milk and other materials - Easy-to-install two-thread (lead 20mm) screws are used. *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 appreciation and high trust from everyone. Please feel free to contact us with any requests.