Description

1. Lids should be made in two versions.

2. The design and dimensions of the covers must correspond to those indicated in drawings 1 and 2 and in the table.

An example of the designation of the cover version 1 to the pipeline DH=12 mm made of aluminum alloy:

Lid 1-12-31A GOST 13976-74

The same, made of steel grade 12X18H9T:

Lid 1-12-13A GOST 13976-74

The same, made of steel grade 45:

Lid 1-12-22A GOST 13976-74

The same, made of steel grade 13X11N2V2MF:

Lid 1-12-11A GOST 13976-74

The same for general purpose products:

Lid 1-12-31 GOST 13976-74
Lid 1-12-13 GOST 13976-74
Lid 1-12-22 GOST 13976-74
Lid 1-12-11 GOST 13976-74