Hara Kougyou is the construction industry’s leading company for grouting, air packers, and soil improvement.

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high-level solution-oriented techniques for Public Works,
Construction and Machine Engineering.

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+81-3-3902-3431

Construction Tools

HARA KOUGYOU CO., LTD.Our productsConstruction Tools

Main Products

All Products

Boring tools

Boring rod

Core tube

High pressure air packer

Grouting machine parts, tool

Packer

Preventer

Foundation ground anchor

Grouting rod

Materials for expand packer

Sleeve pipe

Double packer

Materials for high pressure injection method

Materials for mechanical agitation process

High pressure hoses

Parts for shotcrete

Hoses

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