Tenders Are Invited For Delivery And Installation Of Radiators And Pipes For The Main Building Of The Slantse Gas Station, Town Of Popovo, Gh.K. Rusalya No. 37

A Heating Network That Has Not Been Replaced Will Be Replaced. Features Of Heating Pipes: Press Systems Of Pipes And Fittings With Diameters From Ø18 To Ø76 Made Of Non-Alloyed Steel For Heating Installations Of The Following Material: - Unalloyed Steel; Material No. 1.0034 (E195) In Accordance With En 10305 Or Equivalent. - Externally Galvanized. The Pipes And Fittings Are Protected From Corrosion By A Galvanic Coating Of A Zinc Layer (Fe/Zn 88), With A Thickness Of 8-15 Μm, Covering The Outer Surface Of The Elements. The Fittings Should Have Factory-Installed Epdm Sealing Rings For An Operating Temperature Of Up To +110°C. Coef. Of Thermal Expansion ≤ 0.012Mm. The System Allows Fast And Reliable Connection, By Pressing The Connections With The Help Of The Electro-Hydraulic Press Tools, In Order To Achieve An Inseparable And Clean Connection Between Pipes And Fittings, Eliminating The Processes Of Screwing Or Welding The Individual Elements. New Radiators Equipped With Thermostatic Heads Will Be Installed; Panel Radiators Type 22 And Type 33 Double Panel With Double Collector With Heights From H400 Mm To H600 Mm; Panel Material Steel With Thickness Over 1.2Mm. Galvanized; Nominal Top. Power – ≥ 1452 W/M; Temperature Exponent - ≥ 1.3334; Coating In White Color Ral 9016 Or Equivalent; With Guarantees: - For The Origin Of The Product: Manufacturers Marking: Ce - For Operational Durability - 10 (Ten) Years Guarantee For Bursting And Corrosion. Testing And Commissioning After Completing The Installation Work, The Installation Should Be Flushed, Filled And Vented. It Is Important That During These Activities, As Well As During The Subsequent Tests, The Thermal Heads Are Not Mounted On The Valves; Carry Out A Hydraulic Strength Test (Ppr=2.9 Bar For 15 Min.) And Density (Ppr=2.2 Bar For At Least 1 Hour). The Test Is Considered Successful If There Are No Leaks And Gaps In The Installation And The Pressure Does Not Change; After A Successful Hydraulic Test, Perform A Functional (Warm) Test At An External Temperature Not Higher Than T=10°C. The Test Is Considered Successful If All Heating Elements Heat Up Evenly. After A Successful Functional Test, Install And Adjust The Thermal Heads Of The Thermostatic Valves. The Contractor Is Obliged To Ensure And Maintain Comprehensive Monitoring Of The Performed Activities, Thereby Assuming Full Responsibility For Their Condition Until Handover To The Employer. All Planned Activities Should Be Carried Out In A Finished Form, With The Quality Of The Delivery And Installation Being In Accordance With All Applicable Regulatory Requirements.