Provision of drinking water supply, or in other words `piped' water supply to urban and rural population, constitutes an important aspect of developmental programmes in many countries. Among several materials for pipes and fittings, plastics, though of recent origin, have offered vast potentialities both economical and technical, for exploitation by the engineers, architects and builders of the plastic materials, polyethylene (high density). These HDPE pipes and fittings have a high degree of corrosion resistance, are light in weight. Yet tough and durable, have excellent, hydraulic properties, excellent thermal properties, weather ability. High density polyethylene (HDPE) is being used as drainage pipe material because it is lightweight, corrosion resistant, easy to install, and has a low maintenance cost. The design of HDPE corrugated drainage pipe is based on the assumption that the pipe will deform and thus relieve stress. Consequently, ductility is an essential parameter to accommodate allowable deflection during the pipeâ€™s service life. HDPE resins with low ductility can lead to unexpected cracking in the pipe, brought on by a process called slow crack growth. To minimize such cracking, the stress crack resistance (SCR) of HDPE resins must be properly evaluated. HDPE is very flexible and can endure harsher site handling than more brittle polymers like PVC. Flexibility also allows turns in the piping system without the need for additional joints. Uses and Applications The plastic pipes are replacing the conventional pipes because of many advantages they have over other piping systems. Some of the main advantages of plastic pipes systems are light weight, easy to handle and installation, better flow characteristics, corrosion and installation resistant, lower power requirement during water transmission, cheap in length to length cost. Plastic pipes are durable and may last for as long as 50 years or more. Following are the bulk consumers of HDPE/LDPE pipes and fittings in India: Central public works departments, State public works departments, Housing Boards, Urban development authority like DDA, M.E.S., Municipal Boards, Water Works and district boards, Department of atomic energy, Various Jal Nigam, Public Health departments, Process Industries and Power Houses etc. The main objectives of the use of plastics in agriculture are to increase the cultivated area; to improve the environment of the crop, thereby increasing quality and productivity; and to facilitate the transport and storage of the produce. In the broad sense, uses of plastics in agriculture may be classified into two main groups. The first group is much interesting which is for water management and allied areas like lining of reservoirs, ponds, canals; mulching; storage and shading areas on a large scale. The other group includes the application of plastics to replace traditional materials used in agriculture. Market Survey Plastics, a material of the new generation, has been growing up faster than was expected since the 1980s. With restrictions on the use of wood to conserve forests, its importance has grown phenomenally. Because of its light weight, ease in maintenance and natural sparkle, it is substituting not only wood but also metals and glass. The automobile industry, the white and brown goods and the packaging industries, all offer expanding prospects. Polymers are classified into thermoplastics and thermosettings. Thermoplastics include elastomers (unvulcanised), polyvinyl chloride (PVC), polyethylene (PE), polystyrene (PS), polyurethane (PU) and other resins. Thermosettings include elastomers (vulcanised), polyethylene (crosslinked), phenolics, alkyds, polyesters. The industry has expanded along with expansion of diverse applications areas such as packaging, extrusions, blow mouldings and industrial mouldings for automobiles, telecommunications, white goods. User segments include electrical appliances, domesticware, leatherite, decorative laminates, fittings and fixtures, construction industry (extrusions), automobile components, machinery and equipment, water tanks, pipes and fittings, drink bottles, medical appliances, weather protection. The opportunities are also opening up with the expansion and sophistication of food pro cessing, automobiles, entertainment electronics and appliances. Besides these, industry's contributions have been vital in areas of rural electrification, telecommunication, horticulture, medicare, apart from a perceptible change in living styles and standards. Polymers have found uses in all spheres of life with demand for better materials, greater functional utility, more economical packaging and versatile and durable all weather products. Illustratively, the hilly regions of east India, or the drought prone districts of Rajasthan, Gujarat and Tamil Nadu demand moulded tanks in thousands.