DOUBLE WALL CORRUGATED (DWC) HDPE PIPES (SIZE UPTO 1500MM)

Double Wall Corrugated (DWC) HDPE pipes are similar to normal HDPE pipes except that they have different external & internal surfaces which gives them additional strength and stiffness. These are made with High Density Polyethylene which has very high life expectancy. These are externally corrugated and have smooth surface inside and are available from 75 mm to 1.0 m dia. These pipes are light weight and can be used for non-pressure underground sewerage, drainage & cross drainage (pipe culvert) including rain water harvesting purposes. They are maintenance free and therefore, once installed, will lie underground for years.

It is well-known that corrugated pipes can offer exceptional material savings, good hydraulic (flow) properties and high compression strength. For these reasons corrugated pipes have shown high growth rates in recent years resulting in the continued development of its production technology. Here we aim to give you an overview of the main characteristics, types and production technologies of corrugated pipes and show how well the corrugated pipe for sewage and drainage applications acquits itself compared to its two main competitors, the concrete pipe and the solid wall PE pipe.

In the early days corrugated pipes benefitted from the growth in demand for telecommunication cable ducting.

But in terms of material conversion tonnage, cable ducting has now been overtaken by drainage and sewage pipes for construction and infrastructure. Corrugated pipes can be made of a wide range of different materials such as polyamide (PA),thermoplastic elastomers (TPE), thermoplastic rubber (TPR), polytetrafluoroethylene (PTFE), but the primary raw material in the manufacture of corrugated pipes for water transportation is high-density polyethylene (HDPE), followed by polypropylene (PP) and polyvinyl chloride (PVC).

INTRODUCTION
MERITS OF DWC HDPE PIPES
USES OF DWC HDPE PIPES
ADVANTAGES IN CORRUGATED PIPE
APPLICATION OF DOUBLE CORRUGATED PIPE
B.I.S. SPECIFICATION
PRODUCTION TECHNOLOGIES OF DWC PIPE
SINGLE WALL PIPE
DUAL/DOUBLE WALL PIPE
QUALITY CONTROL FOR HDPE
CORRUGATED PIPE STANDARDS AND SN / SR COMPARISON
POINTS TO BE TAKEN INTO CONSIDERATION
EXAMINATION AND TESTING OF CORRUGATED PIPES
PIPE AND ARTICULATION COMPONENT TESTS
TECHNICAL PROPERTIES OF PE CORRUGATED PIPES
DOUBLE WALL CORRUGATED PIPES
DIMENSIONS AND WEIGHTS FOR STANDARD DOUBLE WALL
CORRUGATED PIPES, WITH AN INTEGRATED COUPLING SLEEVE
RECENT PROJECTS – CORRUGATED PIPES, FITTINGS, MANHOLES, INSPECTION CHAMBERS, DRAINAGE PIPES
COMPARISON OF CORRUGATED PIPE WITH OTHER CONVENTIONAL PIPES
CORRUGATED PIPE VERSUS SOLID WALL PIPE
CORRUGATED VERSUS SPIRAL PIPE
TECHNICAL DETAILS OF CORRUGATED PIPE
TYPICAL PRODUCT SPECIFICATION
DOUBLE CORRUGATED PIPE WALL STRUCTURE
PIPES ENDS
HYDRAULIC SEALING
FITTINGS
MANUFACTURING PROCESS DESCRIPTION
TESTING
PROCESS EQUIPMENT
TECHNICAL DATA
THE COMPOSING OF PRODUCTION LINE
MARKET SURVEY
RESEARCH CATEGORY
WORLD DEMAND TO INCREASE 6.2% ANNUALLY THROUGH 2017
PVC CONTINUES AS MOST WIDELY USED RESIN
HDPE PIPE MARKET POTENTIAL ANALYSIS
DEVELOPMENT OF HDPE PIPE MATERIALS
HDPE PIPE MATERIAL PRODUCTION STATUS
CHINA’S HDPE MARKET PROSPECTS
THE PRESSURE TUBE
INDOOR AND OUTDOOR WATER SUPPLY PIPE
SANDWICH TUBE
NON PRESSURE PIPE
IRRIGATION TUBE
UNDERGROUND DRAINAGE, SEWAGE PIPE
CABLE THREADING PIPE AND CABLE PROTECTIVE SLEEVE
THERE ARE 3 OF CHINA’S HDPE PIPE INDUSTRY PROBLEMS
RAW MATERIAL SUPPLY PROBLEMS
PRODUCTION EQUIPMENT BEHIND
PRODUCT APPLICATION LINK
CONCLUSION
WORLD PLASTIC PIPE MARKET
WORLDWIDE PIPE MARKET TO APPROACH 31 BILLION METERS
WORLD DEMAND TO INCREASE 6% PER YEAR THROUGH 2015
ASIA/PACIFIC TO ACCOUNT FOR MORE THAN 1/2 OF DEMAND
GROWTH STUDY COVERAGE
PRODUCTION OF HDPE PIPES IN INDIA
DETAILED EXPORT DATA OF DWC HDPE PIPES
DETAILED EXPORT DATA OF WALL CORRUGATED PIPES
PRESENT MANUFACTURERS/SUPPLIERS
OF HDPE DOUBLE WALL CORRUGATED PIPES
HDPE/PP/PVC DOUBLE WALL CORRUGATED
PIPE PRODUCTION LINE
MANUFACTURING PROCESS
PREPARATION OF RAW MATERIAL (RM)
APPROVAL OF RM FOR PURCHASE ORDER
RECEIVING / STORAGE
IF THE LOT IS COMPLIANT, IT IS STORED AND REGISTERED.
MIXTURE
EXTRUSION
CORRUGATION
THIS RECENT TECHNOLOGY IS UNDER STUDY.
CALIBRATION
FINISHING AND PACKAGING
CONTROLS AND TESTS
TECHNICAL REQUIREMENT OF
DOUBLE WALLED CORRUGATED (DWC) HDPE DUCT
SCOPE
REQUIREMENTS
GENERAL INFRASTRUCTUR
QUALITY CONTROL
ESSENTIAL MACHINERY & PLANT REQUIRED FOR PRODUCTION
REQUIRED ESSENTIAL MACHINERY & PLANT SHALL BE AS FOLLOWS
ESSENTIAL TESTING EQUIPMENTS REQUIRED FOR QUALITY ASSURANCE
REQUIRED ESSENTIAL TESTING EQUIPMENTS SHALL BE AS FOLLOWS
QUALITY ASSURANCE FLOW CHART FOR DWC HDPE DUCT
PLANT LAYOUT
SUPPLIERS OF PLANT AND MACHINERY
SUPPLIERS OF PLANT AND MACHINERY (IMPORTED)
COMPLETE PLANT SUPPLIERS
DOUBLE WALL CORRUGATED HDPE PIPE MAKING PLANT & EQUIPMENTS
AIR POLLUTION CONTROL EQUIPMENTS
EOT CRANES
DG SETS
POWER TRANSFORMERS
COOLING TOWER
ETP PLANTS
MEASURING AND TESTING INSTRUMENTS
SUPPLIERS OF RAW MATERIALS
HDPE RESIN
HDPE GRANULES

APPENDIX – A:

1.      COST OF PLANT ECONOMICS
2.      LAND & BUILDING
3.      PLANT AND MACHINERY
4.      FIXED CAPITAL INVESTMENT
5.      RAW MATERIAL
6.      SALARY AND WAGES
7.      UTILITIES AND OVERHEADS
8.      TOTAL WORKING CAPITAL
9.      COST OF PRODUCTION
10.      PROFITABILITY ANALYSIS
11.      BREAK EVEN POINT
12.      RESOURCES OF FINANCE
13.      INTEREST CHART
14.      DEPRECIATION CHART
15.      CASH FLOW STATEMENT
16.      PROJECTED BALANCE SHEET