Durodrain Solid Wall Sewer and Drain Pipe

PVC-U (unplasticised polyvinyl chloride) is selected as a pipe material internationally because of its excellent performance characteristics:

  • Resistance to abrasion and scouring.
  • Resistance to attack from acid or alkaline soils.
  • Impervious to chemicals found in all sewerage.
  • Good flow characteristics.
  • Not damaged by modern cleaning methods.
  • Good impact properties, an important factor in installation, transportation and use.
SABS - AN INVESTMENT

Specifications are written to ensure that products perform the way that they were designed. The correct use of products that comply with recognised specifications will save unnecessary expense when remedial work is carried out due to failure or rejection by the authorities.

ISO 9001 - SUSTAINED QUALITY

DPI Plastics' two manufacturing sites in South Africa have the ISO 9001 accreditation demonstrating the company's intent and capability as a supplier of world class plastic pipe and fitting systems.

DPI Plastics' quality policy is relevant to its organizational goals and the expectations and needs of its customers.

Class 51 Solid Wall (normal duty) Pipe - 100 kPa pipe stiffness

Size: outside
diameter mm
(OD)
Standard
length (m)
Pipe ends Minimum wall
thickness
(mm)
Mass kg/m Code
110 4 & 6 plain end 2.2 1.143 U110/4,01 & U110/6,01
110 6 integral joint 2.2 1.143   U110/6,02
160 4 & 6 plain end 3.2 2.514 SE160/4,01 & SE160/6,01
160 6 integral joint 3.2 2.514   SE160/6,02
200 4 & 6 integral joint 3.9 3.802 SE200/4,01 & SE200/6,01
200 6 integral joint 3.9 3.802   SE200/6,02
250 6 integral joint 5.0 6.179   SE250/6,02
315 6 integral joint 6.2 9.688   SE315/6,02
355 6 integral joint 7.0 12.297   SE355/6,02
400 6 integral joint 7.9 15.675   SE400/6,02
450 6 integral joint 8.8 19.790   SE450/6,02
500 6 integral joint 9.8 24.234   SE500/6,02
560 6 integral joint 11.0 28.920   SE560/6,02
630 6 integral joint 12.4 36.681   SE630/6,02

PIPE STIFFNESS

The introduction of structured wall pipes to South African market led to the preparation of the SANS 1601 specification. This introduced the concept of the pipe stiffness rating as a pipe classification. The use of kPa rating (100, 200 and 400 kPa) is often confused with the pressure class rating, but in fact relates to the amount of pressure to deform the pipe by 5% of its diameter.

The solid wall specification (SANS 791) has two pipe stiffness classes being class 51 (normal duty) and class 34 (heavy duty). These relate to 100kPa and 300kPa respectively.

SANS Specification Normal Duty Medium Duty Heavy Duty
class stiffness kPa class stiffness kPa class stiffness kPa
SANS 791 51 100 - - 34 300
SANS 1601 100 100 200 200 400 400

Class 34 Solid Wall (heavy duty) Pipe - 300 kPa pipe stiffness


Size: outside
diameter mm
(OD)
Standard
length (m)
Pipe ends Minimum
wall
thickness
(mm)
Mass kg/m Code
110 4 & 6 plain end 3.0 1.546 U110/4HD,01 & U110/6HD,01
110 6 integral joint 3.0 1.546   U110/6HD,02
160 4 & 6 plain end 4.7 3.665 SE160/4HD,01 & SE160/6HD,01
160 6 integral joint 4.7 3.665   SE160/6HD,02
200 4 & 6 plain end 5.9 5.633 SE200/4HD,01 & SE200/6HD,01
200 6 integral joint 5.9 5.633   SE200/6HD,02
250 6 integral joint 7.4 8.966   SE250/6HD,02
315 6 integral joint 9.2 14.147   SE315/6HD,02
355 6 integral joint 10.4 18.445   SE355/6HD,02
400 6 integral joint 11.8 22.832   SE400/6HD,02
450 6 integral joint 13.2 29.148   SE450/6HD,02
500 6 integral joint 14.7 35.908   SE500/6HD,02
560 6 integral joint 16.3 42.431   SE560/6HD,02
630 6 integral joint 18.4 53.896   SE630/6HD,02