4
8947-75* ( 3298-81)
1998
.
Ductile iron and steel fittings with parallel thread for pipelines. Transition angles. Basic dimensions
8947-59
14.11.75 2901
01.01.77
,
( 2-93)
la. :
1 - ;
2 - .
3298-81.
( , . 2).
1. .
1
2
. 1
. .
02.07.2015
