
A2-70 nuts are made from 304 stainless steel. A2-70 stainless steel is a widely used fastener component material known for its excellent corrosion resistance and high strength. As indicated by the "A2-70" marking. The "A2" designation indicates the material type, an austenitic stainless steel known for being non-magnetic. The "70" value refers to its tensile strength, which is 700 MPa.
The A2-70 nut set is highly corrosion resistant and suitable for use in a wide range of environments, including wet and corrosive conditions. Its excellent resistance to rust and other forms of corrosion ensures that it provides long-lasting, reliable performance. As a result, it is ideal for use in demanding applications such as marine and offshore equipment, chemical processing, and food processing equipment.
The A2-70 nut set is very easy to install and provides consistent, uniform clamping force to ensure that joints and structures are securely fastened.
applications






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SUNPASS, founded in 1979, specializes in the production of industrial sealing and thermal insulation materials. Serving new tank container manufacturer, manhole cover manufacturer, valve manufacturer, hazardous chemicals manufacturer, depot, transport logistics companies, cleaning and maintenance service companies and trade companies at home and abroad.
-Supply to the world's top 6 tank container manufactures, such as CIMC, SINGMAS, etc
-China's first national brand SUNPASS for tank accessories
-ISO 9001 system certification, 26 patents and trademarks
-Strict internal control, professional team, 6 senior technical experts with more than 20 years experience, 87% professional customer service staff with more than 3 years experience, 8 quality inspectors with more than 5 years experience
-Member of ITCO and Tank Container Development Alliance -Over 200 workers, 18000M2 workshop -12 sets of German equipment & advanced technology
-Distributor: Netherlands, Indonesia, Thailand, India
SunPass includes Tenglong Sealing, TopSealing and Sunpass. Tenglong laid the foundation for the development of Top Sealing and SUNPASS. Top Sealing Focus on export business, and SUNPASS focus on Tank Container Spare Parts. Sunpass/TopSealing departments: Finance(3), Research and Development(8), Technical(8) , Sales(9), Manufacturing(50), Production Material Control(40) and Administrative&Human Resources Department(6).
SUNPASS has sealing products workshop, dust cap workshop, thermometer workshop, pressure gauge workshop, and so on. The products involve manlid seal, super tank seal, flanges gaskets, PTFE gaskets, O rings, FEP encapsulated manlid seal, dust caps, thermometers, pressure gauges, swing bolts, document holders, walk way, frame gauze, one way ball valve, flanges, as well as other accessories. SUNPASS products are exported to Netherlands, United States, France and all over the world.
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