At Calderería Mañes we comply with the standard sector regulations: regulations ASTM, ASME:

  • Regulations ASTM, ASME
  • European Pressure Equipment Directive DEP 97/23/CE
  • Regulation AD-MERKBLATTER
  • Regulations DIN, BS, AFNOR,UNE

Specifically, our welding processes are certified as compliant with the ASME Code, Section IX, EN-288-3 for Carbon, Stainless, Duplex, Super-duplex steel materials and Cu, Cr, Ni, & Mn alloys.

Calderería Mañes has been certified in accordance with the complete quality requirements for fusion welding of metallic  materials according to UNE-EN ISO3834-2:2022, for the manufacture of pressure equipment, heat exchangers and steel components , for the
 SMAW, SAW, GMAW, and GTAW processes.


Calderería Mañes has obtained the EC MARKING which certifies that our steel structures manufacturing processes comply with the UNE-EN1090-1 Standard of the Regulation (EU) 305/2011 on construction products, a marking which is of mandatory compliance since 1 July 2014.


In June 2016, the company Calderería Mañes was assessed and certified pursuant to the ISO 9001:2015, Standard, with the following scope:
– Design, manufacture and assembly of pressure vessels and heat exchangers.
– Manufacture and assembly of metallic structures.

At the same time, we are certified to install and repair pressure equipment with EIP-2, ERP-2 stamps from the Department of Industry of the Basque Government.