HDPE Pressure Manual - Marley Pipe Systems

1 HDPE Pressure Manual HDPE_pressure-manual_pt_v01. Copyright Marley Pipe Systems (Pty) Ltd 2010. Marley Pipe Systems have been manufacturing SABS. approved products since consumer protection was first mandated in the industry. In keeping with international trends, Marley is a market leader in converting to lead free materials. Marley 's commitment to quality and safety has all pipe and components manufactured in an ISO9001. accredited facility. Contents Introduction 4. Overview 5. HDPE Pipe Material Advances 5. Applications 5. Quality Assurance 5. Features and Benefits 5. Pipe Specification 6. Specifications 6. Coil Dimensions 6. Pipe Dimensions Tables (ISO 4427) 7. Physical Properties 8. Table of Physical Properties 8. Comparison with Other Plastic Materials 8.

2 The Stress Regression Line 9. Design Stress and Safety Factor 9. Melt Flow Index 10. Tensile Strength 10. Effect of Temperature Change 10. Impact Resistance 11. Ultra Violet Resistance 11. Flammability 11 Design Considerations 48. Abrasion Resistance 11 Flow 48. Jointing 12 Pressure Considerations 58. Permanent Jointing 12 Temperature Considerations 59. Non-Permanent (detachable) Jointing 12 Trench Load Considerations 60. Buttwelding Principles 13 Above Ground Installation 65. General 13 Bending 66. The Marley System 13 Disclaimer 66. Equipment 13. Jointing Method 14. Manual Welding Procedure 14. Electrofusion Principles 18. Introduction 18. Technology and Product Design 18. Electrofusion Principles 18. Electrofusion Control Unit 18.

3 Bar Coded Electrofusion Fittings 18. Electrofusion Sequence 19. Temperature/Fusion Time Compensation 20. Electrofusion Jointing Procedures 20. Equipment 20. Material Compatibility 21. Fabricated Fittings 22. Tak Fittings 28. Victaulic Fittings 29. Buttweld Fittings 30. Electrofusion Fittings 40. Marley Astore Compression Fittings 45. Magnum Polypropylene Saddles 45. Flanges 46. Introduction Marley Pipe Systems is one of South Africa's leading manufacturers and suppliers of plastic pipe reticulation Systems , meeting the needs of the construction, civil, agricultural, industrial and petrochemical industries, primarily in South Africa, but also supplying into Africa, the Indian Ocean Islands, Europe and Australia. Marley Pipe Systems was established in 1963 as Marley Plumbing, then part of the Marley SA group.

4 Since then Marley Plumbing has become the market leader in the manufacture and distribution of plumbing products to the merchant trade. In 1991 Marley Plumbing entered the Pressure pipe market and now offers a range of uPVC and mPVC. pipe, as well as a range of Pressure bends, tees, valves and other fittings. In 1999 Marley international was bought by the In June 2003 Marley Pipe Systems became part of Belgium based Etex group; already operating globally the newly formed Belgium based Aliaxis group of in the construction and piping industry. companies. Specializing in plastic pipe reticulation Systems , Aliaxis operates in 37 countries through over In 2001 the Etex group acquired the global operation 100 companies, generating sales in excess of Glynwed Pipe Systems resulting in the merger of Billion Euro.

5 Glynwed Pipe Systems Africa and Marley Plumbing to form the new company Marley Pipe Systems . This Marley Pipe Systems is now able to offer reticulation new company offers pipe Systems in uPVC, mPVC solutions from around the globe to the local market, and High Density Polyethylene in a range of sizes and will continue to grow, bringing new technology and from 16 mm up to 630 mm in diameter. In addition, new solutions to market. a vast range of fittings and jointing Systems is also available from Solvent Weld fittings and integral Rubber Ring Joints to Butt welding and electro fusion. Other mechanical jointing Systems are also available from top of the range metal clamping Systems to an extensive range of compression fittings.

6 Employing some 400 personnel, Marley Pipe Systems has manufacturing facilities at Nigel in Gauteng Province as well as at Port Shepstone in KwaZulu- Natal. The distribution network encompasses 8. branches around the country as well as sales offices in Namibia and Botswana, coupled with an active export division selling into Africa, the Indian Ocean Islands, Europe and Australia. 4. Overview HDPE Pipe Material Advances Considerable strides have been made in improving Features and Benefits the quality of HDPE material and its long term ability to withstand Pressure . The current SABS specification, Good impact strength: Little handling and SANS 4427, covers 3 different material grades (PE 63, installation damage PE 80 and PE 100).

7 These three material grades have different properties which enable them to be classified Excellent corrosion resistance: Long and with minimum required strengths (MRS) of MPa, efficient service life 8,0 MPa and MPa respectively. Applying a design coefficient of (safety factor) to the MRS gives the Good chemical resistance: Wide variety of design stress used by SANS 4427 for these materials applications ( MPa, MPa and MPa respectively) with the result that the wall thickness for a particular size and Low mass: Easy handling class becomes progressively less as the change is made to a material with a higher MRS. Flexibility: Easy installation Long lengths available: Fewer joints Applications Marley Pipe Systems have for several years been Good abrasion resistance: Can be used to confidently supplying their range of HDPE pipes, pump slurries fittings and saddles for successful use in a variety of applications in the Civil, Agricultural, Municipal, Mining Good UV resistance: Can be used in and Industrial sectors.

8 Because of the good chemical exposed locations resistance and abrasion resistance properties they are also extensively used in chemical, waste and slurry Low friction losses: Lower pumping costs applications. Several jointing methods: Wide variety of applications Quality Assurance Marley Pipe Systems (and previously Marley SA) Extensive range of fittings: Wide variety of has been an SABS mark holder for over 40 years. installations Products are manufactured to the relevant SABS. specifications at plants in Port Shepstone and Nigel. Both manufacturing facilities conform to the ISO 9001. Quality Management system. Fully audited Quality Control laboratories are operational at both facilities, where scheduled and random testing of products is carried out.

9 4427. 5. Pipe Specification Specifications The HDPE pipes manufactured by Marley Pipe Systems are manufactured to, and carry the SABS mark for, SANS. ISO 4427. These pipes are manufactured from three different designated materials viz: PE 63, PE 80 and PE 100. See tables on page 7. In these tables it can be seen that SANS ISO 4427 have grouped together the different Pressure classes, produced from different material designations, under a common heading known as the Standard Diameter (Dimension) Ratio or SDR. The minimum wall thicknesses specified are not exactly that which would be derived from a calculation using Barlow's formula or the SDR but are the rounded up values of the highest minimum wall thickness calculated for any size and class in the SDR group (see Design Stress and Safety Factor on page 9).

10 Coil Dimensions Coil Dimensions Width (W). mm mm mm mm mm Coil Length - metres SDR's mm 50/100m 50m 100m 50m 100m 16 600 n/a 860 n/a 180. 20 600 n/a 860 n/a 180. 25 600 n/a 890 n/a 200. 32 700 n/a 1090 n/a 220. 40 700 n/a 1090 n/a 220. 50 1300 1410 1560 150 220. 63 1300 1780 1960 190 280. 75 1300 1780 1960 190 280. 90 2500 3100 3300 270 360. 90 1800 2360 2540 360 450. 110 2500 3160 n/a 330 n/a W. 110 2200 2860 n/a 400 n/a Hydrostatic Design Stress (HDS). Designation of MRS at 50 years and Maximum allowable hydrostatic design stress, material 20 C - Mpa Mpa PE 63 5. PE 80 8 PE 100 10 8. Notes on Pipe Dimension tables: HDS (Hydrostatic Design Stress), in (MPA), is obtained by applying a design factor of not less than to the minimum required strength value of the pipe.