HAS NEWS
この度、能登半島地震で被害を受けた水道の復旧・復興支援に対し、その功績を称えられ、穴水町長 吉村光輝様より感謝状を頂きました。 当社は災害発生当日の2024年1月1日より、穴水町を始め被災各地へ向け、...
詳細については、「2026年度標準価格表」を確認ください。
１月１８日に本社所在地の愛知県西尾市で開催された「第４回にしおマラソン」で、ダクタイル鋳鉄異形管の一つ「フランジ蓋」をベースにデザインし特製した「にしおマラソン鋳物メダル」を５㎞の部上位入賞者に授与し...
10月29・30・31日の3日間 、ひろしまゲートパークで開催された広島水道展に出展しました。弊社のブースでは、LS（ロングソケット）形フランジ短管やGF-GF接合用スペーサーなどの展示を行い、大変多...
ひろしまゲートパークで10月29・30・31日の3日間開催される広島水道展に出展します。 株式会社ハズは４ブースです。ぜひお立ち寄りください。 期間：2025年10月29日(水)～31日(金)会場： ...
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.
