Russia's fastener industry develops an enabling environment:
Russia is also actively preparing and issuing various fastener standards to improve product quality and industry competitiveness. In January 2011, Russia adopted a standard for high-strength bolts for bridges; in July of the same year, the Russian Timber Construction Association issued a new standard for connection design of screws and externally threaded screws for wood construction. Including “Connection Requirements and Test Methods for Nails, Screws, and Threaded Screws†and “Design of Timber Connections for Wood Construction Using Threaded Fastenersâ€; in 2012, the RosMetiz Association of Russia issued Nut Manufacturing Standard STOPM1-1.003-2011. The standard is for threaded nuts with a diameter less than or equal to M16 and a strength rating of 8.
"The current situation of the Russian government is 'to promote the upgrading of Russian fasteners in terms of variety and quality.' In order to expand the variety of Russian fasteners, Russian fastener manufacturers need to do a lot of work, and they are currently enhancing their execution. It's a lot of work."
It is reported that BelZAN, the largest automotive fastener manufacturer in Russia, has been providing fasteners for road construction since 2009 and plans to develop wind power equipment in the future to expand the variety of fasteners and achieve product diversification. The Russian Severstal-Metiz Group also passed the verification of high-strength fasteners for bridge construction. Many fastener factories currently plan to expand their mechanical plant.
Rooftop Packaged Unit With Economizer
Economizer with exhaust damper, fresh air damper, returan air damper and exhaust air damper. The dampers can be automaticlly controlled by PLC controller or by manual based on project needs.
This type HVAC system is another energy saving in the field of air conditioning.
Interlocked to run when return air dampers are being closed and supply air blower is in operation. The extraction fans run when outdoor air dampers are at least 50% open (adjustable). It is also overload protected. A gravity exhaust damper is supplied with this option to prevent air from entering the unit during shutdown.The power exhaust fans have been size to exhaust 50% of the nominal air flow of the unit.
The schematic diagram as below like free cooling system.
Rooftop Packaged Unit With Economizer,Economizer HVAC Residential,Portable Rooftop with Economizer,Economizer Rooftop Packaged Unit
Jinan Amrta Air Conditioning Co.,Ltd , https://www.waterchiller.pl