supply and delivery of liquid chlorine of 1050.00 mts in 1000 kgs suppliers cylinders and 50.00 mts in 100 kgs board cylinders as per is-646/1986 to various destinations of hmwssb ( godavari/singur/manjira/osmansagar water supply system) for a period of (6) six months, under qat wing, a.f beds, hmwssb .