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163 Lloyd Street , Pretor ia Industr ia l , Pretor ia West , 0117
www.sinvac.co.za
[email protected] :+27(0)12-386 6484
HDPE Structured Wall Pipe
& HDPE Manholes
Manufactured in
accordance with
SANS21138
“Your Single Source HDPE Solution Company”
B-BBEE level 2
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
Content
• SINVAC Group Vision & Mission 3
• SINVAC Companies 4
• Introduction 5
• SINVAC HDPE Structured Wall Product Range 6
• SINVAC HDPE Manholes 7
• Structured Wall Size Table 8
• Jointing Methods 9
• Technical Specification 12
• Flow Calculation 13
• SAPPMA Certified 14
• Gallery 15
• Polymer Laboratory 16
• Pressure Test 17
• Reference 18
• Pipelaying & Back Filling 19
• Handling 22
• SINVAC Products & Services 24
• Contact Details 25
To be the preferred one-stop supplier of HDPE pipes, fabricated plastic solutions, piping
projects and related products in Africa.
The SINVAC mission is to be the preferred supplier of HDPE piping systems and related
products in Africa. This competitive position is derived from its customer centricity, ability to
provide an all-inclusive solution from pipes to installed projects at a world class service level.
SINVAC is an OEM for most of its products and manufacture and supply its products in a
structured way with innovative, enthusiastic team players.
SINVAC GROUP VISION
SINVAC GROUP MISSION
SINVAC Plastics
SINVAC Plastics is the most experienced
roto moulder in South Africa and was
established in 1962. We supply a wide
range of high quality plastic roto
moulded items and accessories.
SINVAC Mining & Engineering
SINVAC Mining & Engineering was
established end 2007 to operate from the
manufacturing platform created by SINVAC
Piping, SINVAC Plastics and Johannesburg
Foundry.
SINVAC Piping
Sinvac Piping manufacturers SABS HDPE,
HDPE and LDPE pressure pipe under
SABS accreditation and supply brackets,
stubs, bends, tee’s, flanges and fittings to
a wide variety of industries.
SINVAC Development Trust
More than just the corporate social
investment activities of the SINVAC
Investments (Pty) Ltd group. Giving back
and serving within the range of The
SINVAC Group’s product and service
solutions.
SINVAC COMPANIES
Introduction
SINVAC HDPE Structured Wall Pipe
5
HDPE Structured Wall Pipe represents the
latest advancements in material and
manufacturing technology. Raw material
properties and product technology have
been combined to provide a light-weight
engineered pipe for various gravity and
non-pressure applications in the
municipal, industrial, road construction,
rehabilitation and marine pipeline
applications.
HDPE Structured Wall Pipe is now the
front runner in replacing traditional pipe
system materials like concrete, CMP
(corrugated metal pipe) and PVC
(polyvinylchloride).
HDPE Structured Wall Pipe is
manufactured through a specially
designed profile extrusion process where
a square or rectangular profile is extruded
and spirally wound onto a mandrel. The
overlap on the edge of the extruded
profile is fused homogenously together
whilst still in the hot plastic state to create
a smooth internal surface.
This results in a light-weight HDPE
Structured Wall Pipe which has all the
advantages of a normal solid-wall HDPE
pipe but with added benefits of being
light-weight, easy to transport and install,
which then makes it an obvious choice for
gravity and non-pressure applications.
HDPE Structured Wall Pipe is normally
defined by the inside diameter and the
ring stiffness for the desired application.
With pipe ID range from 300mm to
1200mm and ring stiffness of 4kN/m²or
8kN/m².
SINVAC product range includes HDPE
Structured Wall Pipe
Applications
Storm Water Management
Sewerage Pipelines
Manholes / Manhole Drops
Drainage Pipelines
Culverts
Floats
In-house fabrication
of HDPE Manholes
SINVAC has the capacity to manufacture and supply HDPE
Structured Wall Pipe with ID range 300mm to 1200mm and
ring stiffness of 4kN/m2 and 8kN/m2 at very competitive
prices. HDPE Structured Wall Pipe represents the
latest advancements in material and
manufacturing technology. Raw material
properties and product technology have been combined to
provide a light-weight engineered pipe for various gravity and
low pressure applications in the municipal, industrial and road
construction, rehabilitation and marine pipeline applications.
Advantages of HDPE Structured Wall Pipe:
• Typically weighs less than 10% of equivalent concrete
pipe.
• HDPE has excellent chemical resistance to most
industrial and domestic wastes.
• HDPE is five times more abrasion resistant than
concrete.
• HDPE has a lifespan of up to 100 years.
Low Pressure Couplings for
HDPE Structured Wall Pipe
6
SINVAC HDPE Manholes
SINVAC HDPE Structured Wall Pipe
7
SINVAC offers custom fabricated HDPE Manholes for a variety of applications. Manufactured
from a combination of high quality solid-wall and structured wall pipe. SINVAC HDPE
Manholes are resistant to root ingress, preventing contamination to surrounding groundwater
and providing a watertight structure that delivers an extended life expectancy, making them
suited for sewer and stormwater applications.
SINVAC HDPE Manholes are prefabricated , which eliminates the risk of deformation in the
structure. The shaft configuration of the manhole can also be adapted to accommodate many
applications and an HDPE ladder can be fabricated for the inside of the Manhole.
Structured Wall Size Table
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
8
SINVAC Coupling and Seal Method
Jointing Methods
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
9
The SINVAC Coupling and Seal socket joint must always be carried out in accordance with
sound civil practice.
The following is recommended:
• Clean the pipe end, the coupling and the seal, removing any foreign matter, water, sand,
dirt, etc.
• Make sure the seal sits correctly in its location.
• Apply lubricant over the end of the pipe with seal and coupling end, as appropriate.
• Carefully align the coupling and seal end with each other, then push to the required
insertion depth.
• If a lever is used on the pipe to push the joint, insert a block of wood between the lever
and the end of the pipe to prevent damage to the pipe.
Extrusion Weld Method
Jointing Methods
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
10
Welding Machine
Hot-Gas Extrusion WeldingThe hot air extrusion gun allows for
thick fillet welds, the machine self feed
the filler material and is used for
various HDPE joining applications and
fabrication.
HDPE Sleeve Jointing Method
Clamp Jointing Method
Jointing Methods
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
11
SINVAC manufactures the HDPE
Sleeve in-house. We then
extrusion weld the one end onto
the first Structured Wall Pipe.
The second pipe is then inserted
into the HDPE Sleeve on-site and
is also extrusion welded to form
a watertight joint.
The Clamp Joint Method is
designed for jointing pipes in
stormwater and other types of
non-pressure application, repair
of existing pipelines and
maintenance of pipelines. Used
as a joint for plain ended pipes.
Technical Specification
*Technical Specifications of HDPE Raw Materials
(Manufactured in accordance with SANS21138)
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
12
Flow Calculation
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
13
Hydraulic Design
SINVAC HDPE Structured Wall Pipe has a low friction coefficient,
owing to HDPE having a low friction coefficient.
Manning’s Roughness Coefficient value of n=0.03 is used for pipes
with full flow as per below graph.
SAPPMA Certified
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
14
163 Lloyd Street , P O Box 19294, Pretor ia Industr ia l , Pretor ia West , 0117
E: [email protected] .za or [email protected] .za W: www.sinvacpiping .co .za or
www.sinvacmining.co .za
T : +27(0) 12 386 6484
Gallery
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
15
SINVAC has its own in-house
Polymer LaboratorySINVAC has a World-class Quality Control System in
place to produce great quality HDPE products!
Quality has been the main driving
force for SINVAC to upgrade and
expand the SINVAC Polymer
Laboratory. We invested in
brand new, state-of-the-art
testing equipment, compliant
with the latest international
standards to test conformance
to SANS 4427 and SANS 21138
for HDPE raw material and final
product. Laboratory testing is
done by qualified laboratory
personnel with calibrated
equipment to produce certified
and accurate results. SINVAC’s
Polymer Laboratory takes the
standard of in-house testing in
the SA pipe manufacturing
industry to the next level!
CASE STUDY
……………………………............
Project
Sinvac Polymer
Laboratory
……………………………………..
Client
All Existing & Potential
Sinvac Customers
……………………………………..
Products
HDPE Raw Material,
HDPE Solid &
Structured Wall Pipe
and Final Product
……………………………………..
Testing Equipment
• Melt Flow Index
• Thermal Stability
• Carbon Black Content
& Dispersion
• Tensile Analysis
• Pressure Testing
Pressure Test
Reason: (HDPE Structured Wall Pipe is used for non-pressure
application. Pressure Test conducted as experiment)
• A pressure test was conducted on the 4kN/m2 Structured Wall HDPE
Pipe, with Inner Diameter of 560mm.
• The Cylinder, as per Figure 1.1, was filled with water. Additional water
was pumped in with a water pressure pump, until required pressure was
reached.
• The result obtained in the experiment, is that the Extrusion Weld and
Structured Wall Pipe can handle at least 1.5 bar pressure, as per
Figure 1.2, without leaking.
Extrusion Weld↑
Cylinder Figure 1.1
Gauge Figure 1.2
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
17
Outside View
Inside View
163 Lloyd Street , P O Box 19294, Pretor ia Industr ia l , Pretor ia West , 0117
E: [email protected] .za or [email protected] .za W: www.sinvacpiping .co .za or
www.sinvacmining.co .za
T : +27(0) 12 386 6484
Reference
Renico Earthworks & Civils
Mams Mall Mamelodi
The scope of work for the project
included the following:
• Manufacturing, supply and
installation of 2km of HDPE
Structured Wall Pipes.
• Leak testing of the Piping System.
The project delivery period was 6
weeks.
SINVAC HDPE Structured Wall Pipe
SINVAC manufactures HDPE Structured Wall Pipe from
300mm - 1200mm both in 4kN/m2 and 8kN/m2
18
Pipelaying & Back Filling
SINVAC HDPE Structured Wall Pipe
19*We hereby acknowledge the reference to SAPPMA Technical Manual 5th Edition of September 2017 Pg.147
Pipelaying & Back Filling
SINVAC HDPE Structured Wall Pipe
20*We hereby acknowledge the reference to SAPPMA Technical Manual 5th Edition of September 2017 Pg.148
Pipelaying & Back Filling
SINVAC HDPE Structured Wall Pipe
21*We hereby acknowledge the reference to SAPPMA Technical Manual 5th Edition of September 2017 Pg.149
Handling
SINVAC HDPE Structured Wall Pipe
22
Handling
SINVAC HDPE Structured Wall Pipe
23
24
For any enquiries on
HDPE Structured Wall Pipe
Please contact:
25
This SINVAC Structured Wall Pipe Brochure has been produced as a guide for
engineers, purchasing officers and contractors to cover the application and use of
our pipes and fittings. SINVAC (Pty) Ltd guarantees its products quality under its
general conditions of sale.
SINVAC Sales Factory