Rainbow Electronics is a fully accredited ASME pressure vessel facility since 2012. We are proud holders of ASME H Stamp, HLW Stamp and National Board Stamp. This allows our company to design and manufacture heating boilers under very strict rules and regulations that are governed by ASME/TSSA approved Quality Control Programs and Manuals. In order to manufacture heating boilers, TSSA Certified Welders and Welding Procedures must be followed. In addition, our welders are TSSA certified for Mig, Tig and Tube to Tubesheet Welding.