Industry Overview
Plastics comprise a broad group of synthetic materials that are solid in their finished form but become sufficiently fluid during processing to be shaped using heat and pressure. Over the years, plastics have evolved from being used primarily for decorative and non-structural purposes to becoming essential engineering materials for structural applications such as piping, doors, windows, and water storage tanks due to their durability, resistance to corrosion, creep, and environmental effects.
The plastics conversion industry has experienced significant growth, leading to the development of new applications and manufacturing technologies. Blow moulding has become one of the most widely adopted methods for producing hollow thermoplastic products such as drums and barrels, which have increasingly replaced conventional metal alternatives. Thermoplastics including LDPE, LLDPE, HDPE, PVC, and polypropylene are widely used because they offer a broad range of properties suitable for different industrial and commercial applications.
Large-capacity plastic water tanks, typically ranging from 100 litres to 25,000 litres, are commonly manufactured using rotational moulding, a process well suited for producing large, seamless, and complex hollow components from polyethylene materials. These tanks are extensively used for potable water storage, rainwater harvesting, irrigation, industrial storage, fire protection, and agricultural applications. PVC pipes and fittings complement these systems by providing excellent resistance to chemical and electrochemical corrosion, making them suitable for water supply, drainage, sewage, and industrial fluid transport.
The report also highlights the growing demand for plastic pipes in India, supported by rapid urbanization and infrastructure development. Government initiatives focused on improving water distribution and sanitation have increased the adoption of durable, lightweight, and cost-effective plastic piping systems for residential, commercial, and infrastructure projects.
Cost Estimation
| Particular | Value |
|---|---|
| Plant Capacity | 100 Nos/Day of Water Tank and Pipes 4000 Kg/day |
| Land & Building (21.780 Sq.ft) | Rs.1.73 Cr |
| Plant & Machinery | Rs. 1.58 Cr |
| Working Capital for 1 Month | Rs. 1.36 Cr |
| Total Capital Investment | Rs. 5.01 Cr |
| Rate of Return | 20% |
| Break Even Point | 71% |
Content Index
- INTRODUCTION
- PROPERTIES OF PLASTIC TANKS
- PROPERTIES OF PVC PIPES
- BIS SPECIFICATIONS
- PLUMBING PIPES
- PVC FLEXIBLE PIPES
- PROCESS FLOW SHEET FOR THE MANUFACTURE
- OF PVC PIPES
- MANUFACTURERS OF PVC PIPES
- PROPERTIES OF HDPE WATER TANKS
- PLASTICS USED FOR TANK CASTING WITH SPECIFIC PROPERTIES
- PHYSICAL PROPERTIES OF PLASTICS
- ADVANTAGES OF LLDPE ARE:-
- RAW MATERIALS FOR WATER TANK
- B.I.S. SPECIFICATION AND REQUIREMENT
- TESTING OF PLASTICS
- USES AND APPLICATIONS FOR WATER TANK
- INDIAN MARKET FOR PLASTIC PIPES
- DEMAND OF WATER TANK
- GLOBAL PLASTIC STORAGE TANK MARKET
- PLASTIC WATER STORAGE TANKS MANUFACTURER/EXPORTERS
- MANUFACTURING PROCESS OF ROTOMOULDED WATER TANK
- SELECTION AND DESCRIPTION OF PROCESS
- PLASTIC WATER STORAGE TANK PRCESSING DETAILS
- OVERVIEW OF ROTATIONAL MOULDING PROCESS
- PRODUCTION PROCESS
- PROCESS FLOW DIAGRAM
- TECHNICALITIES, EQIPMENTS AND TOOLS FOR
- ROTATIONAL MOULDING MACHINE
- HISTORY
- EQUIPMENT AND TOOLING
- DETAILS OF EQUIPMENTS FOR ROTATIONAL
- MOULDING TO MANUFACTURE PLASTIC WATER STORAGE TANK
- STANDARD SETUP AND EQUIPMENT FOR ROTATIONAL MOLDING
- ROTATIONAL MOLDING MACHINES
- RECENT IMPROVEMENTS IN ROTATIONAL MOULDING
- RECENT IMPROVEMENTS
- ADVANTAGE AND LIMITATION OF ROTOMOULDING
- WITH THEIR MATERIAL REQUIREMENTS
- LIMITATIONS
- MATERIAL REQUIREMENTS
- MOULD RELEASE AGENTS AND MATERIALS FOR ROTATIONAL MOULDING
- MOLD RELEASE AGENTS
- MATERIALS
- DESIGN CONSIDERATION FOR ROTATIONAL MOULDING
- PRODUCT DESIGN
- DESIGNING FOR ROTATIONAL MOLDING
- MATERIAL LIMITATIONS AND CONSIDERATIONS
- WALL THICKNESS
- CONSTRUCTION DETAILS OF DIFFERENT TYPES
- OF ROTATIONAL MOULDING MACHINE
- MACHINE TYPES
- CLAMSHELL MACHINES
- TURRET MACHINES
- SHUTTLE MACHINES
- SWING MACHINES
- VERTICAL WHEEL MACHINES
- MACHINE TYPES ROCK AND ROLL MACHINES
- OPEN-FLAME MACHINES
- DETAILS OF MOULDS & MOULDING
- MULTILAYER MOLDINGS
- CROSS-LINKED MOLDINGS
- INSERTS
- DECORATIONS
- PROCESS FACTOR IN ROTATIONAL MOULDING TO
- MANUFACTURE PLASTIC WATER STORAGE TANK
- SINTERING
- MOLD ROTATION
- CONTROL SYSTEMS
- PROCESS FACTORS
- TRIMMING
- MOLDS
- CAST ALUMINUM MOLDS
- DESIGN GUIDE LINES SECONDARY FINISHING
- AND TROUBLESHOOTING IN ROTATIONAL MOULDING
- SUPPLIERS OF RAW MATERIALS
- PVC RESIN
- CALCIUM STEARATE
- LEAD STEARATE
- PRECIPITATED CALCIUM CARBONATE
- PIGMENT DYE
- PLASTIC COLOURS
- COMPLETE PLANT AND MACHINERY SUPPLIERS
Appendix
- 01. PLANT ECONOMICS
- 02. LAND & BUILDING
- 03. PLANT AND MACHINERY
- 04. OTHER FIXED ASSESTS
- 05. FIXED CAPITAL
- 06. RAW MATERIAL
- 07. SALARY AND WAGES
- 08. UTILITIES AND OVERHEADS
- 09. TOTAL WORKING CAPITAL
- 10. TOTAL CAPITAL INVESTMENT
- 11. COST OF PRODUCTION
- 12. TURN OVER/ANNUM
- 13. BREAK EVEN POINT
- 14. RESOURCES FOR FINANCE
- 15. INSTALMENT PAYABLE IN 5 YEARS
- 16. DEPRECIATION CHART FOR 5 YEARS
- 17. PROFIT ANALYSIS FOR 5 YEARS
- 18. PROJECTED BALANCE SHEET FOR (5-10 YEARS)
Frequently Asked Questions
Plastic water tanks are designed to safely store water and other compatible liquids. They are widely used for potable water storage, rainwater harvesting, irrigation, fire protection, emergency backup, agricultural operations, and industrial applications. Their lightweight construction, corrosion resistance, and long service life make them a practical alternative to traditional storage tanks made from metal or concrete.
Rotational moulding is preferred because it produces seamless hollow products with uniform wall thickness. The process is especially suitable for manufacturing large and complex water tanks using polyethylene materials. It minimizes joints, improves structural integrity, reduces leakage risk, and enables economical production of durable storage tanks in a wide range of capacities.
PVC pipes offer excellent corrosion resistance and long-term durability. Because PVC is non-conductive, it is not affected by galvanic or electrochemical corrosion. These pipes are lightweight, easy to transport and install, require minimal maintenance, provide smooth internal flow characteristics, and are suitable for plumbing, irrigation, drainage, sewage, and industrial fluid handling.
Common materials include HDPE, LLDPE, LDPE, PVC, polypropylene, and related thermoplastics. Each material provides different combinations of strength, flexibility, chemical resistance, and processing characteristics. Material selection depends on the intended application, storage medium, operating conditions, and manufacturing process used for the final product.
Plastic storage tanks are used across residential, agricultural, commercial, and industrial sectors. They are suitable for storing water, chemicals, milk, and selected liquids and gases, while specialized high-pressure tanks are also used in aerospace and other industrial applications. Their corrosion resistance and durability make them suitable for demanding environments.
The primary drivers are rapid urbanization, expanding infrastructure, and increasing investments in water supply and sanitation systems. Plastic pipes are widely adopted because they are lightweight, durable, corrosion resistant, and economical to install. These advantages make them well suited for municipal infrastructure, residential construction, and industrial utility networks.
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