株式会社　精和工業所 Product Lineup

"If you are having trouble with stainless steel welding, leave it to us." Seiwa Industrial Co., Ltd. specializes in welding technology for thin stainless steel sheets and possesses various processing techniques and advanced expertise as a welding and joining specialist. With high technical skills and abundant know-how, we have established advanced welding processes based on years of proven experience, covering everything from sheet metal processing to final assembly. In particular, our welding processing for storage tanks is widely used in domestic electric water heaters and heat pump water heaters by ensuring corrosion resistance and the strength of the welded joints. Our technical capabilities range from TIG welding of 0.3mm thickness to fiber laser welding for ultra-thin shapes requiring thicknesses below 0.1mm. We utilize a variety of welding methods, including TIG, fiber laser, and robotic welding, tailored to the structure and material properties of the products. Additionally, to balance quality and high productivity, we actively utilize dedicated jigs and automation equipment designed and manufactured by our in-house production technology department. If you are having trouble with welding processing, please take a look using the download button. Feel free to contact us as well.

We would like to introduce our "Stainless Steel Rectangular Hot Water Tank for Beverage Use (for Coffee Machines)." This product is designed for beverage equipment such as coffee machines. Its structure emphasizes corrosion resistance, airtightness, and weld strength, achieving the high quality standards required for beverage applications. We can also accommodate specification proposals based on usage and conditions. Please feel free to contact us when needed. 【Features】 ■ High airtightness ensured by high-quality welding of thin stainless steel ■ Corrosion resistance and hygiene suitable for beverage applications ■ Proposals for optimal structure can be made from the design stage ■ Capable of mass production, ensuring stable quality supply *For more details, please download the PDF or feel free to contact us.

We would like to introduce our "Stainless Steel Storage Tank for Small Water Heaters." This is a compact product designed for electric water heaters, suitable for residential facilities and aviation-related applications. Its space-saving design allows for installation in tight spaces. Available capacities include 0.6L, 1L, 3L, 6L, 12L, 30L, 40L, and 60L. We can also accommodate other capacities based on your specific needs and conditions. Please feel free to contact us when you need assistance. 【Features】 - Compact design optimized for small electric water heaters - Suitable for limited installation spaces - Available capacities: 0.6L, 1L, 3L, 6L, 12L, 30L, 40L, 60L, etc. - Material and plate thickness can be selected according to application and installation environment - Excellent corrosion resistance and durability, suitable for long-term use - Broadly applicable from residential facilities to aviation-related uses *For more details, please download the PDF or feel free to contact us.

We would like to introduce our "Medium-sized Stainless Steel Storage Tank" that we handle. This product is designed for medium capacity use in commercial, industrial, and household applications. By using it in conjunction with boilers and heat source equipment, it achieves stable hot water supply and energy-efficient operation. We will propose the optimal plate thickness according to the usage and conditions. Please feel free to contact us when you need assistance. 【Features】 ■ Stable hot water supply even in high-demand environments ■ Ability to propose the optimal material and plate thickness based on usage ■ High insulation performance that enables energy-efficient operation ■ Numerous achievements in updating and replacing existing equipment ■ Proven track record of supply to major home appliance manufacturers ■ Continuous implementation of rationalization proposals at least once a year *For more details, please download the PDF or feel free to contact us.