site map Contact Us A company that fosters a comfortable environment through planning proposals, design construction, and maintenance of water and sewage, sanitation, and air conditioning equipment construction. Water supply facility construction Water pipe laying work, water supply business, joint water supply business, deep well construction, etc. Water supply and drainage equipment construction Water supply equipment, drainage equipment, hot water supply equipment, various plumbing works, etc. Sanitary equipment construction Sanitary fixtures Toilet / bath / kitchen washbasin Various equipment, etc. Air conditioning equipment construction Air conditioning, air conditioning and ventilation equipment construction, etc. Environmental facility construction Solar power generation, wind power generation, all-electricity, environmental energy-saving equipment, etc. Maintenance work Water supply, hot water supply, drainage, cleaning work, air conditioner cleaning work, etc. July 2015 We received the 2015 Oyama City Excellent Construction Contractor Award in the pipe construction category . July 2015 In-house training has been updated. ► About site use Copyright (C) 2013 hitachi-setsubi All rights reserved