Pneumatic plugs are developed for operative and safe blocking, clearing of blockage and pressure testing of water supplying, sewer and heat pipelines with the diameter from 65 to 1500 mm. ISO 9001: 2008 CERTIFIED. sibrezina@mail.ru "NPP "Sibrezinotehnica" Co LTD Tel. /fax: +7 (3812) 550018 +7 (3812) 550018 , 514060 644036, Russia, Omsk, 1 Kazachstanskaya, 30. E-mail: michail260175@rambler.ru