нажав машины с лестницей и платформы

(tapping and stopple)ApplicationThe technique of isolating a section of pipeline for repairs and additions without interruption of service is applied in gas network, urban gas pipe, water pipe network. The use of the product can ensure when everything is normal that branch pipe installation, substitution for a damaged pipe,valve restoration and other tasks can be performed, which prevent the economicloss, eliminate the awful influence on manufacturing, and keeping danger away.