M.WATANABE & CO.,LTD. List of Products and Services

We are handling oxygen-free copper and phosphorus-deoxidized copper which contain more than 99.9% copper. Both types of copper have excellent electrical and heat conductivity and workability such as rolling, spreading, bending and corrosion resistance, and weather resistance. 【Features of Copper】 ・Excellent heat conductivity ・Good workability ・It has been confirmed to have bacteria resistant properties. ・Round and irregularly shaped tubes can be manufactured as products. ・Tubes can be drawn or shaped to the required size according to the customer's application. 【Main Applications】 ・Air conditioning and heat transfer tubes for refrigerator and refrigerant piping ・Copper tubes for piping and others: Copper tubes for propane, tap water, gas water heaters, circulation pipes for bath heater, etc. ・Special order products: Copper-coated steel rods (electrolytic beams), various types of irregularly shaped tubes, copper tube terminals, sleeves, etc. ・Water supply and drainage pipes (sanitary metal pottery tools)

Copper and zinc alloy tube, 65% copper and 35% zinc, is the most common proportion. It has excellent extensibility, bendability, drawability, and plating properties. We also produce alloy tubes made from 70% copper and 30% zinc, and alloy tubes made from 85-90% copper and10-15% of zinc for special applications. ◆Faucet spouts and drainpipes. (we have delivery records for major manufacturers) 【Main Applications】 ・Water supply and drainage pipes (sanitary pottery attached metal tools) ・Electrical components (solenoid actuators for automobiles, etc.) ・Air supply pipes and other conveying machinery and equipment ・Various parts for daily sundries and stationery printing ・Building and Decoration Fixtures (door handles, arm rails, etc.) *For more details, please contact us.

DLC (diamond-like carbon) coating deposits a low-friction DLC film using plasma ion implantation coating method. 【Features】 ■Capable of handling work with complicated shapes ・By using the work itself as a source of plasma, plasma is formed along the shape of the work and allows gas to flow around and deposit a film on complicated shapes and interiors. ■Excellent lubricity ・Excellent lubricity due to the formation of low coefficient of friction film ■Can deposit on resin and rubber as well as metal and aluminum. ・Low-temperature deposition is possible. ■Can deposit with the flexibility to follow the shape of the base material (even resin is resistant to film peeling). *Please contact us if you have any problems with life reduction due to friction of parts. *We can provide technical explanations and trial production. *We also sell DLC deposition system. * For more details, please contact us or download our catalog for more information.

This material was developed by adding 0.2~2.5% lead to brass pipe to give it free-cutting properties. It boasts excellent free-cutting properties, but its extensibility, bendability, and drawability are slightly inferior. 【Features of Copper】 ・Excellent heat conductivity ・Good workability ・It has been confirmed to have antibacterial properties. ・Round and irregularly shaped tubes can be manufactured as products. ・Tubes can be expanded to the required size according to the customer's application. 【Main Applications】 ・Various parts for the precision industry (watches, measuring instruments, etc.) ・Parts for optical instruments (microscopes, telescopes, cameras, etc.) ・Daily sundries (stationery such as ballpoint pen, etc.) *For more details, please contact us.

We manufacture various types of special copper alloy tubes with higher strength, corrosion resistance, and polishability than that of copper and brass tubes. Our special copper alloy tubes include red copper tubes with high dezincification resistance and corrosion-resistant brass tubes with high corrosion resistance and strength. ♦We have a proven track record in the production of wind instruments for major musical instrument manufacturers. 【Main Applications】 ・Nickel silver tube: Musical instruments, chemical industry machinery ・Corrosion resistant brass tubes: Heat exchangers, condensate tubes ・Dezincification-resistant brass tubes: Water supply and drainage pipes, hot-water supply pipe faucet components, gas, and petroleum machinery ・Red copper tubes: Water supply and drainage pipes, hot-water supply pipes, faucet components *For more details, please contact us.