HAS NEWS
10月21日・22日・23日の3日間、出島メッセ長崎にて開催された「長崎水道展2026」に出展いたしました。 当社ブースでは、LS（ロングソケット）形フランジ短管やGPT字管をはじめとする製品を展示し...
熊本地震の復旧活動における当社の対応について、三河新報2026年8月28日号に掲載されました。 ハズは、令和8年熊本地震の被災地へ水道復旧用の資材を緊急供給し、断水の早期解消に向けて九州工場を中心に連...
熊本地震の復旧活動における当社の対応について、愛三時報2026年8月28日号に掲載されました。 株式会社ハズは水道管用のダクタイル鋳鉄異形管を製造し、日本の水道インフラを守る企業です。全国の供給網や豊...
出島メッセ長崎で10月21・22・23日の3日間開催される長崎水道展に出展します。 株式会社ハズは８６ブースです。ぜひお立ち寄りください。 期間：2026年10月21日(水)～23日(金)会場： 出島...
このたび、株式会社ハズ 常務取締役の犬塚進が、 FM AICHIのラジオ番組 「la CASA presents Design × Life Goes On」に出演しました。放送は2026年7月25日...
HAS PRODUCT LINEUP
We manufacture a wide range of ductile cast‑iron products, including fittings for water and sewer systems, valves, and manholes. Our fully integrated production system covers every stage—from design and development to casting, machining, welding, coating, and assembly. We also conduct various inspections, such as hydrostatic pressure testing, to ensure a robust and reliable quality assurance system. With flexible production capabilities—from single custom pieces to large‑scale mass production—we meet diverse customer needs by delivering “everything from small castings to large castings.”
HAS Integrated Production
Our strength comes from the spirit each of us carries—the commitment to connect people and processes throughout our work. From veteran technicians who preserve our history to young talent driving innovation, everyone works hand in hand to support HAS’s integrated production system. By optimizing each process—Design & Development, Casting, Machining, Thermal Spraying, Painting, and Inspection & Quality Assurance—we deliver products that truly satisfy our customers.
Design & Development
We design and develop our own products—including special‑shaped pipes, valves, jigs, and in‑house equipment—and have extensive experience in joint development projects with major manufacturers.
Casting
We manufacture ductile iron products—from single‑piece production to mass production—using lost‑foam and large sand‑mold casting. By using shell and cold‑box cores, we ensure dimensional accuracy even in unmachined areas.
Machining
Using our in‑house multi‑axis drilling machines, we ensure precise drilling accuracy. Our large face lathe can handle workpieces up to 5,000 mm, and by using our proprietary socket‑end machining equipment, we are able to support mixed‑model production.
Thermal Spraying
With a masking method unique to our company, we ensure complete thermal spraying inside the socket and even through the bolt holes. Our proprietary setup technology allows spraying all the way to the insertion end. With two robots in operation, we maintain stable coating quality and can handle even large Z‑shaped pipes used for obstacle avoidance and alignment in piping layouts.
Painting
In addition to hand‑spray gun coating, we use a suction coating method that achieves a 99% coating efficiency. By using a reciprocating coater with two rotations and two strokes, we reduce missed areas. We also simplify masking and reduce industrial waste by using heat‑resistant masking materials.
Inspection & Quality Assurance
We conduct mechanical property tests on materials—(tensile strength, elongation, and hardness)—and perform hydrostatic pressure testing on every product to ensure reliability. After machining and hydrostatic testing, each pipe undergoes a detailed external visual inspection, followed by a final inspection after painting, allowing us to deliver consistently high‑quality products to our customers.
