Welding

Permanent joints for pressure vessels are welded in accordance with the PED directive. Welding procedures are approved by an authorized TÜV SÜD representative.
Welding procedures are qualified by a notified body according to European Parliament and Council Directive 2014/68/EU, Government Decree No. 219/2016 Coll., and applicable technical standards.

Material Grades Used

Carbon steel thickness: 1.5 mm – 110 mm
Austenitic steel thickness: 1.5 mm – 50 mm
Nickel and its alloys: 3 mm – 8 mm

Types of Welding Methods According to ČSN ISO 4063

111 (MMA) – Manual arc welding with covered electrode
121 (SAW) – Submerged arc welding with wire (automatic)
131 (MIG) – Welding with melting electrode in inert shielding gas
135 (MAG) – Welding with melting electrode in active shielding gas
136 (MAG) – Welding with flux-cored electrode in active gas
138 (MAG) – Welding with metal powder-filled flux-cored electrode in active gas
141 (TIG) – Tungsten electrode welding in neutral shielding gas with filler material
142 (TIG) – Tungsten electrode welding in neutral shielding gas without filler material

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