1.2 Technical reasons for rejection
In case of deviations from this VQS or non-observance of drawing and ordering data, Voith Paper reserves the right to reject
the components.
2 Material
Not specified in detail in this VQS.
3 Design
The pipelines, tanks and separators must be designed in a way to ensure 100% tightness.
4 Manufacture
4.1 Surface
4.1.1 Surface treatment / Surface condition / Coat of paint
Unless otherwise defined in the order / parts list, components of corrosion-resistant stainless materials shall be treated
according to VN 1800 prior to being delivered to Voith Paper.
4.2 Machining
4.2.1 Metal-cutting machining
Fastening surfaces for wipers shall be machined without removing the workpiece. Machining shall be effected in the
installation position.
4.2.2 Welding
The welding shop must fulfill the requirements specified in ISO 3834-4.
The manufacturer must have a qualified welding supervisor in accordance with EWF (EWE, EWT, EWS) or with IIW (IWE,
IWT, IWS acc. to ISO 14731).
The welding personnel shall either be qualified according to ISO 9606-1 or EN 287-1 (or according to EN 1418 for fully
mechanized and automatic welding processes) or ASME Code Section IX (or equivalent).
Upon request, valid qualification certificates of the welders shall be sent to Voith Paper.