RADIATORS TECHNICAL FEATURES

RADIATOR FABRICATION PROCESS:

At HITECH the radiator manufacturing is designed to ensure that no foreign particles enter inside the radiator during manufacturing. The fabrication process incorporates superior welding technology to ensure that no water pockets are developed during the fabrication process. The radiators are assembled in very precise gauges to ensure dimensional accuracy & due to the high level of automation, well designed manufacturing processes & strict process control, the fabrication time from start to finish for an average lot of radiators, is less than 14 hours.

HITECH can manufacture 520mm wide radiators using cold rolled carbon steel (CRCA) as well as stainless steel sheets of grade 304L and 316L The standard thicknesses of sheet are 1.00mm and 1.20mm & infrastructure at HITECH can manufacture radiators with center to center distances starting from 1000mm up to 4500mm.

The elements are held in position with bracing round bright bars of 10mm dia. for purpose of bracing as per DIN std. 42559 & the distance between the elements i.e. pitch can be maintained at 40mm / 45mm / 50mm and 55mm.

HITECH can manufacture radiators with header pipes of 88.9mm OD (80 NB) and 114mm OD (100 NB) as per prevailing IS / DIN standards & specific customer requirements regarding desired accessories can also be incorporated inclusive of various types of fan support brackets required on radiators.

Each radiator manufactured by HITECH has a unique number punched on the radiator & this number helps in maintaining the quality records of each job manufactured. This unique number helps us in deriving the entire history of each radiator i.e. workmen names who have worked on the subject radiator or the different inspections which were carried out with relevant inspector names, the time intervals between two coats of primer/paint along with total raw material traceability.

INTERNAL SURFACE TREATMENT:
EXTERNAL SURFACE TREATMENT:
HITECH can offer radiators with two options of internal coating of radiators.
  • Surface Treatment: The radiators are first thoroughly cleaned with wire brush followed by dry air purging to ensure dust free internal surface. Subsequently an electromagnet is also inserted in header pipes to ensure zero metallic contamination inside the header pipes.
  • Radiators are internally flushed with solvents.
  • Radiators are internally coated with alkyd phenolic based hot oil resistant varnish ELMOLUFT 1A FD of ELANTAS – Dr. Beck’s make with a temperature resistant index of 120°C.or internally coated with single pack primers – RD-124 – CHING Germany make with a temperature resistant index of 150°C
  • o Surface Treatment: Radiators are grit blasted after pressure testing. Grit blasting ensures that the entire surface area is cleaned and no contamination, oil traces or rust is left on the radiator surface. The grit blasting process also gives the necessary profile which facilitates paint adhesion on metal. The radiators are grit blasted to Sa 2 1/2 as per ISO 8501 or SSPC-SP-10.
  • HITECH offers the following paint systems as per customer requirement.
  • Radiators externally coated with epoxy base / intermediate primers & paints with final paint shade as per customer specifications.
  • Radiators externally coated with zinc rich base primers + epoxy intermediate MlO primers + polyurethane top coat paints with final paint shade as per customer specifications.
  • Water based paint systems are also provided as per customer requirements.
  • Only hot dip galvanized (HDG) radiators without any of the above mentioned paint systems.
  • Hot dip galvanized (HDG) radiators and subsequently coated with any of the above mentioned paint systems.
  • o HITECH offers various paint systems in accordance to ISO 12944-2 - Global Corrosion standards.

HITECH can offer the following paint systems as per customer requirement.

  • Surface Treatment:
    Radiators are grit blasted after pressure testing. Grit blasting ensures that the entire surface area is cleaned and no contamination, oil traces or rust is left on the radiator surface. The grit blasting process also gives the necessary profile which facilitates paint adhesion on metal. The radiators are grit blasted to Sa 2 1/2 as per ISO 8501 or SSPC-SP-10.
  • HITECH offers the following paint systems as per customer requirement.
  • Radiators externally coated with epoxy base / intermediate primers & paints with final paint shade as per customer specifications.
  • Radiators externally coated with zinc rich base primers + epoxy intermediate MlO primers + polyurethane top coat paints with final paint shade as per customer specifications.
  • Water based paint systems are also provided as per customer requirements.
  • Only hot dip galvanized (HDG) radiators without any of the above mentioned paint systems.
  • Hot dip galvanized (HDG) radiators and subsequently coated with any of the above mentioned paint systems.

All the above systems are designed to withstand different conditions as per the ISO 12944 Global Corrosion standard.

   PACKING:

HITECH supplies radiators packed on road-worthy & sea-worthy wooden pallets, crates or cases, made of natural rubber / jungle wood or pine wood. HITECH manufactures all the pallets, crates & cases in-house & pays special attention to radiator packaging and the accessories used for packing. All export containers are loaded and sealed in the factory itself, to be only opened at the customer’s end.

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