uPVC Watermain Pressure Pipes in Saudi Arabia - Manufacturer in Al-Kharj
4B Factory manufactures uPVC watermain pressure pipes in Saudi Arabia for NWC contractors, municipalities, developers, and infrastructure project teams across the Kingdom. Sizes from 50 mm to 315 mm, Class 4 (10 Bar) and Class 5 (16 Bar), engineered with the Loc-Ring integral socket and produced to SASO ISO 1452 and ASTM D 1785. Made at our Al-Kharj Industrial District facility with same- or next-day Riyadh delivery on stock items.
Loc-Ring Joint
Dual Compression Seal
Potable-Safe
WHO-Aligned Testing
KSA Delivery
Same/Next-Day Riyadh
NWC Ready
Submittal Documentation
Custom Orders
Made-to-Order Lengths
Saudi-Made uPVC Pressure Pipes for Potable Water & Pressure Mains
Watermain pressure pipes carry potable water and pressure-rated flow across municipal networks, residential developments, and industrial sites — they need to hold rated pressure for decades while protecting water quality. Metal corrodes. Concrete tuberculates. uPVC does neither.
4B Factory pressure pipes are non-toxic and impart neither taste nor odour to the water, making them ideal for potable supply. The smooth bore delivers excellent flow with minimal frictional loss, and the material is immune to galvanic and electrochemical corrosion that destroys buried metal pipelines.
Potable-water safe
No tuberculation
Smooth-bore flow
50+ year service
Sizes, Classes, Pressure Ratings & Standards
Our uPVC pressure pipes cover the diameter and pressure range Saudi water network contractors and NWC project teams demand — from distribution mains to industrial pressure lines.
uPVC WATERMAIN PRESSURE PIPES
ASTM D 1785 / SASO ISO 1452 — Class 4 & 5
| Standards | ASTM D 1785, SASO ISO 1452, DIN 8061/8062 |
| Diameter Range | 50 mm to 315 mm |
| Pressure Classes | Class 4 (10 Bar), Class 5 (16 Bar), 6 Bar available |
| Standard Length | 6 metres (with integral socket) |
| Standard Colour | Blue (potable water) / Grey |
| Jointing System | Loc-Ring integral socket (EPDM seal) or solvent weld |
| Material | 100% virgin uPVC compound (≥85% PVC content) |
| Wall Type | Solid wall, smooth bore |
| Service Life | 50+ years buried |
| Manufacturing Origin | Al-Kharj, Saudi Arabia SA |
Available Sizes
Custom pressure classes, lengths, and colours produced to project specification. Send your tender requirements for a formal quotation .
Class 4 & Class 5 — What They Mean
Pressure class determines the maximum sustained working pressure the pipe is rated to handle. Match the class to your network’s design pressure.
Class 4 — Distribution Mains
Rated for 10 Bar maximum sustained working pressure at 20 °C. The standard class for municipal water distribution, residential network branches, and most commercial pressure mains. Used widely across NWC distribution networks.
Class 5 — High-Pressure Mains
Rated for 16 Bar maximum sustained working pressure at 20 °C. Used for trunk water mains, industrial pressure lines, high-elevation network sections, and any application where the design pressure exceeds 10 Bar.
Working pressure ratings are based on water at 20 °C. For higher fluid temperatures (up to 60 °C), pressure ratings de-rate per the standard. Our technical team can advise on class selection for elevated-temperature applications. For non-pressure drainage applications, see our Sewer & Drain Pipes page.
Applications Across Saudi Arabia
Our pressure pipes are installed across the Kingdom in projects of every scale — from villa compound supply to NWC trunk mains.
NWC Distribution Networks
National Water Company distribution mains, network expansions, and district supply infrastructure.
Potable Water Supply
Cold potable water mains for residential developments, compounds, hotels, and hospitals.
Trunk Water Mains
Class 5 high-pressure trunk lines for city supply, transmission mains, and pressure zones.
Industrial Water Lines
Pressure-rated water supply for industrial cities — Jubail, Yanbu, Sudair, 2nd Industrial City Riyadh.
Irrigation Pressure Networks
Agricultural and landscape irrigation pressure mains across Qassim, Al-Kharj, and farm regions.
Vision 2030 Projects
Diriyah, Qiddiya, King Salman Park, NEOM-adjacent water supply infrastructure.
Pump Station Discharge Lines
Pressure discharge piping for booster stations, water authority pumping facilities.
Fire-Fighting Supply Mains
Water-fed fire main networks for industrial sites, large compounds, and commercial developments.
Bulk Supply for NWC, Municipal & Infrastructure Projects
4B Factory routinely supplies large quantities of uPVC pressure pipes for major Saudi water network programmes. Our team issues formal tender quotations with full compliance documentation, material certificates, lead times, and delivery scheduling matched to your project programme.
Frequently Asked Questions — uPVC Watermain Pressure Pipes
Common questions from contractors, MEP engineers, and procurement teams sourcing uPVC duct pipes in Saudi Arabia.
A push-fit compression joint with an EPDM elastomeric seal (per BS 2494 Type W) factory-formed into the integral socket. It provides a reliable pressure seal under site conditions and installs faster than solvent-weld joints, making it the preferred system for NWC distribution and trunk main projects.
Yes. uPVC pressure pipes are non-toxic and impart no taste or odour to water. Material and water-contact testing follows ASTM D 1785 and WHO water-quality guidelines.
Class 4 is rated for 10 Bar sustained working pressure — the standard for distribution networks. Class 5 is rated for 16 Bar — used for trunk mains, high-pressure zones, and elevated-pressure industrial applications.
Diameters from 50 mm to 315 mm, in 6-metre standard lengths with Loc-Ring integral sockets. Smaller sizes (≤50 mm) available with solvent-weld sockets. Custom configurations to order.
Yes. We supply NWC-aligned compliance documentation, material certificates, and submittal packages with every project order. Manufactured to SASO ISO 1452 / ASTM D 1785 to match NWC technical specifications.
Yes. Formed bends at 90°, 45°, 22.5°, and 11.25° are available in sizes from 2″ to 24″, with joints matching the pipe joint type. See our PVC Fabricated Products and Customized Fittings pages.
Yes. As the manufacturer, we sell directly to contractors, MEP firms, and project teams. Bulk and project-volume pricing is available — contact us with your bill of quantities for a formal quotation.
uPVC is corrosion-immune (DI requires cathodic protection in aggressive Saudi soils), much lighter (faster installation, less crane equipment), smoother internally (no tuberculation, better hydraulic performance), and lower-cost installed. For most distribution networks today, uPVC is the engineering preference.
Need Watermain Pressure Pipes for Your Saudi Project?
Get factory-direct pricing, full ASTM D 1785 / SASO ISO 1452 compliance documentation, and Loc-Ring integral-socket pressure pipes from the 4B Factory team. We supply NWC contractors, municipalities, developers, and infrastructure project teams across the Kingdom.