HAS NEWS
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...
このたびの熊本県熊本地方を震源とする地震により、お亡くなりになられた方々に謹んでお悔やみ申し上げますとともに、被災された皆様ならびにご家族の皆様に心よりお見舞い申し上げます。 弊社では、夏季休業期間に...
このたびの熊本地震により被災された皆様ならびにそのご家族の皆様に、心よりお見舞い申し上げます。 水道インフラに関わる企業として、弊社も被災地の復旧・復興に尽力してまいります。弊社のすべての事業拠点は通...
2027年1月17日に開催される「第5回にしおマラソン」において、希望するランナーの皆さまがお申し込みいただける大会記念メダルの製作が決定しました。 昨年開催された「第4回にしおマラソン」では、5km...
今回の社員旅行は1泊2日を基本日程とし、希望者は2泊3日で参加しました。 全国各地の拠点で働く社員が集まり、日頃は直接対面する機会の少ない社員同士が交流を深める貴重な機会となりました。 旅行初日の夜に...
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.
