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Lock bolt cap AK cap

NATM tunnel waterproof sheet protective lock bolt cap 'AK Cap'. Prevents damage to the water stop sheet!

This is a lock bolt cap designed to prevent damage to water stop sheets in NATM tunnel construction. 【Features】 ○ The installation method is very simple. ○ In addition to the lock bolt, the protective plate with a radial spring function also protects the water stop sheet from the corners of the square washer. ● For other functions and details, please download the catalog.

Related Link - http://www.yoshiharakakou.co.jp/pro6.html

basic information

This is a lock bolt cap designed to prevent damage to water stop sheets in NATM tunnel construction. 【Features】 ○ The installation method is very simple. ○ In addition to the lock bolt, the protective plate with a radial spring function also protects the water stop sheet from the corners of the square washer. ● For other functions and details, please download the catalog.

Price information

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Delivery Time

Applications/Examples of results

【Purpose】 ○ Preventing damage to water stop sheets

Three-dimensional mesh spiral structure "Moyai Drain"

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Lock bolt cap AK cap *Product catalog

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