The quality control department, independent from the manufacturers, is included into the Plant structure to provide all necessary inspections and tests for products quality control.

 

There are following quality inspections and tests:

- incoming inspection of rolling steel, zinc, bolts, nuts, washers, etc.

- manufacturing control

- hot dip galvanization control

 

All rolled steel, zinc, bolts, nuts, washers, etc. are inspected before the manufacturing process on there correspondence to size, appearance, standard required by the project. Mechanical properties and chemical analysis are obligatory confirmed by manufacturer's certificates. According to contract requirements the Plant will provide additional tests: bending test, yield points, ultimate resistance etc.

 

Hot dip galvanization control.

Hot dip galvanization control includes:

- visual inspection of all galvanized tower elements and nuts, bolts, washers, etc.

- inspection of zinc coating uniformity, thickness and  it adhesion with a basic metal on the 2%  volume of the hole quantity of galvanized elements.

- inspection of bolts thread galvanization quality by means of gauge-nut.

 

To control tower elements fitting, holes relations, overall and other dimensions correspondence the first tower will be assembled on the plant. Following control tower assembling tests will be organized according to the contract requirements.