INTRODUCTION TO THE
STP GROUP OF COMPANIES
STP was founded in Terrassa Barcelona, Spain
in 1983 and has grown from small company
supporting the local Spanish Industry to an
international group of business operating in
over 80 countries worldwide supporting the
water, gas, mine and sewerage markets.
The STP group of companies specialises in
the manufacture and supply of compression
fittings, universal fittings, saddles and
jointing equipment for HDPE (High Density
Polyethylene Pipes), PP Pipes used in the
transportation of water, sewerage, slurry,
gas and chemicals.
From its manufacturing facilities in
Terrassa, STP supplies its products and
services to customers across the world
through a network of branches in Czech
Republic, Latvia and South Africa and agents
in various countries.
STP places great focus on manufacturing
products of a high quality and such is
accredited with the ISO9002 mark.

Hydrodifusion Fittings (Pty) Ltd is a branch
of STP Spain and has depots in Johannesburg
and Durban. Through these branches we are
able to offer you a complete package of
products produced in Spain and along with an
exciting partnership with a Leading
Manufacturers of Butt Welding machines
WORLDPOLY Australia and Electrofusion
Fittings EUROSTANDARD Italy,.
Hydrodifusion Specialises in the production
of Compression and Universal fittings and
also supplies a full range of products for
Electro fusion and butt fusion.
Hydrodifusion offers the following products:
Compression Fittings, Universal Transition
Fittings, Polycop Fittings, Saddles, PP
Threaded Fittings, PVC Pressure Fittings,
Ball Valves, Electro Fusion Fittings and
machines, butt Fusion Machines (Butt Welding
Machines), RSV Gate Vales, CI Fittings and
Specialized CPVC Grip rings to suit our
compression fittings for high concentrations
of acidity.
Hydrodifusion is focused on specializing in
offering total solutions for the connection
of all pipe materials particularly
polyethylene pipes. Hydrodifusion
specializes in the production, quality and
development of compression fittings and
distribute their products to more than 70
countries world wide.
Hydrodifusion uses the highest quality
virgin raw material for the manufacturing of
PP-B (Polypropylene Copolymer-B) compression
fittings.
Hydrodifusion products are manufactured in
Barcelona, Spain according to the highest
levels of specifications, thus complying
with SABS / SANS14236, DIN, WRAS, NSF and
ISO 14236 specifications.
Hydrodifusion South Africa has a complete
range of HDPE & PVC Fittings available
ex-stock South Africa for the Southern
African market.
We currently service the following Markets
in South Africa and Africa:
- South Africa
- Botswana
- Namibia
- Mozambique
- Angola
- DRC
- Tanzania
- Malawi
- Zambia
- Mauritius
- Rwanda
HYDRODIFUSION CURRENT PRODUCT RANGE:
- Compression Fittings (16mm to 110mm) PN16
with Full SABS 14236 Mark
- Universal Fittings
- Saddles
- Ball Valves
- Electrofusion Fittings (20mm to 400mm)
- Electrofusion Control Boxes
- Butt Welding Machines (40mm to 1600mm)

For over 50 years, Worldpoly has been
heavily involved in the polyethylene pipe
industry as a manufacturer of pipe and
fittings, welding contractor, fabricator and
consultant. We have provided advice,
expertise and products to companies and
individuals in the polyethylene pipe
industry worldwide.
We have developed and manufactured a
complete range of international standard
butt fusion equipment, exporting to more
than 45 countries worldwide. Complementing
our equipment we offer international
training and commission certificates.
All Worldpoly equipment is CE approved and
manufactured under ISO 9001, certified by
SGS (www.sgs.com) and comes with a
comprehensive 12 month international
warranty – with parts supplied direct by
express courier anywhere on the planet.
Worldpoly is an Australian company with a
global perspective. We have an expanding
client base including the following
countries:
As one of the leading manufacturers of
Electrofusion and Spigot fittings based in
Tesero – Italy, Eurostandard has based its
success on the following principles: Total
Quality, Absolute Safety and respect for the
environment.
The company was founded by Antonio Zeni in
1965 and originally manufactured HDPE
creates for bottles. Within a short period
of time the company become a market leader
but due to the new era of plastic bottles
and tins the company was forced to
re-engineer.
Eurostandard then switched to manufacturing
HDPE fittings for pressure pipelines. The
company’s experience in plastics and its
state of the art technology enabled it to
take on the challenge of gas and water
distribution for civil and industrial
applications.
As one of Eurostandards key principles,
quality as has been a significant factor in
the history of the company. All Eurostandard
products and factories have the following
certification:
UNI EN ISO 12201
UNI EN ISO 1555
UNI EN ISO 9001:2000
UNI EN ISO 14001:2004
Eurostandard currently manufacturer
Electrofusion and Spigot Fittings in sizes
from 20mm to 400mm with all the fittings in
sizes up to 160mm rated PN25 (for Water) and
rated PN16 for sizes from 180mm to 400mm.
All Electrofusion fittings are guaranteed
for welding on both Pe80 and Pe100
pipelines.
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