Registered products of the Japan Sewerage Association! Featuring various types of concrete manholes.
This catalog features "assembly manholes" designed to improve construction efficiency and seismic resistance. We introduce products developed for large-diameter pipelines, such as the "I-Hole," as well as "Ad-Hole" and "Hat Ring Method." [Contents] ■ I-Hole ■ Ad-Hole ■ Hat Ring Method ■ Antibacterial Concrete Products *For more details, please refer to the PDF document or feel free to contact us.
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basic information
【I-Hole】 ○ Box-type assembled manhole for large-diameter pipelines such as Hume pipes and box culverts ○ Reduced construction time due to the adoption of CGP method ○ Durability is semi-permanent 【Ad-Hole】 ○ Improved water tightness and seismic resistance at the joint parts ○ Registered product according to Japan Sewage Works Association standards (JSWAS A-11) ○ Compatible with Level 1 and Level 2 seismic motions ○ Available in sizes from No. 0 manhole to No. 5 manhole *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Chiba Ceramics is a comprehensive manufacturer of concrete products based in Chiba Prefecture, handling large box culverts, box culverts, assembled manholes, L-shaped retaining walls, waterways (circular waterways, U-shaped waterways, L-shaped waterways, multi-natural waterways), roadside drainage products (free gradient ditches, variable ditches, U-shaped ditches, L-shaped ditches, circular ditches, slit dish-type ditches, small animal protection ditches), environmentally friendly blocks, fire water tanks, water storage tanks, and joint utility trenches.