=150 , L=7
() -- "EFCO"
( ): 1. " " (780.15.00277) 2015
2.04.12-86
.
: . -
, ,
: p ≥ 4,0 (P ≥ 40 /2) , , ,
2.04.12-86 Pipe lines 33.13330.2012
04. - -
. 34-10-725-93
. .