tender for conducting statutory testing of 57 nos of hydrogen gas cylinders as per the norms of explosive gases act - charges for internal inspection, external inspection, replacement of new key type valves and hydrostatic stretch testing ( as per is 5844-1970 ) of tangedco h2 gas cylinders and scrapping, cleaning and painting with 2 coats of first quality p.o red enamel paint. the test particulars are to be punched on the cylinders and the teflon ring is to be provided at the valve base for h2 gas cylinders. ( 7 m3capacity ) . 2 cost of key type h2 gas cylinder valves made of forged brass approved by department of explosives as per is 3224 with isi mark. ( manufacturers test certificate approved by department of explosives is required ) 3 charges for transporting of the cylinders to be tested to the government approved testing centre and back to mtps-ii after testing including transit insurance.