uPVC piping for agricultural trunk mains, sub-mains, and distribution networks serving drip irrigation, sprinkler systems, center-pivot machines, and flood irrigation across Saudi Arabia's agricultural regions.
Direct pricing from the Jeddah plant, with technical submittal support.
Saudi Arabia's agricultural sector uses uPVC pressure pipe extensively for irrigation infrastructure — from deep-well pump discharge headers to field distribution laterals. uPVC's corrosion immunity, low friction loss, and 50-year service life make it the material of choice for the harsh conditions of Saudi agricultural operations: saline well water, sabkha soil, extreme summer heat, and remote locations where maintenance access is limited.
| Pipe Material | uPVC (PVC-U) DIN 8062 |
|---|---|
| Pressure Classes | PN 6 for gravity/low-pressure, PN 10-16 for pumped systems |
| Size Range | 20 mm laterals to 315 mm trunk mains |
| Jointing | Solvent cement (≤63 mm), rubber ring (>63 mm) |
| Irrigation Methods | Drip, sprinkler, center-pivot, flood |
| Key Regions | Al-Qassim, Hail, Tabuk, Al-Jouf, Riyadh Province |
Saudi Arabia irrigates approximately 1.5 million hectares of agricultural land, predominantly in the central and northern provinces. The primary crops are dates (Saudi Arabia is the world's second-largest date producer), wheat, fodder (alfalfa, Rhodes grass), vegetables, and fruits. Water sources include deep aquifer wells (typically 200–600 m depth) and treated wastewater (TSE — treated sewage effluent) for non-food crops.
The piping infrastructure for a typical Saudi farm irrigation system consists of: (1) a pump discharge header (typically 110-200 mm PN 16 uPVC) connecting the well pump to the control system; (2) trunk mains (110-315 mm PN 10-16) distributing water across the farm; (3) sub-mains (63-110 mm PN 10) within field blocks; and (4) distribution laterals (20-50 mm PN 10) feeding drip emitters or sprinkler heads.
The use of uPVC rather than galvanized steel or HDPE for irrigation trunk mains is driven by economics and performance. uPVC has the lowest long-term cost when considering material cost, installation labor, maintenance, and replacement frequency. Its rigid structure allows shallower burial than flexible HDPE (which can float in waterlogged soil) and its smooth bore maintains full hydraulic capacity over the entire design life.
| Component | Diameter | Pressure Class | Velocity Range | Notes |
|---|---|---|---|---|
| Well pump discharge | 110–200 mm | PN 16 | 1.5–2.5 m/s | High pressure from pump; PN 16 for surge protection |
| Main trunk line | 160–315 mm | PN 10 | 1.0–2.0 m/s | Backbone of farm distribution |
| Sub-main line | 63–110 mm | PN 10 | 1.0–1.5 m/s | Feeds field blocks from trunk main |
| Drip lateral header | 32–50 mm | PN 10 | 0.5–1.0 m/s | Connects sub-main to drip laterals |
| Sprinkler riser feed | 25–32 mm | PN 16 | 1.5–2.0 m/s | Higher pressure for sprinkler operation |
Saudi agricultural water typically has high total dissolved solids (TDS) — often 1,500–5,000 mg/L from deep wells — with elevated sodium, chloride, and sulfate concentrations. This water is highly corrosive to metallic pipes but has zero effect on uPVC. The pipes will not scale, pit, or lose flow capacity regardless of water salinity.
For drip irrigation systems, water filtration is critical to prevent emitter clogging but the uPVC piping itself is not affected by particulate matter. Sand media filters and disc filters are standard upstream of drip systems. The smooth bore of uPVC pipe prevents sediment accumulation inside the pipe — unlike galvanized steel where internal tuberculation traps sediment and progressively reduces flow capacity.
Treated sewage effluent (TSE) used for irrigation of non-food crops (fodder, landscaping) is safely conveyed in uPVC pipe. The pipe is resistant to the chlorine residual and biological content of TSE. Purple color-coded fittings or marking tape is required by Saudi regulations to identify TSE pipework.
Sizing depends on total flow rate, field layout, and system pressure. As a rule of thumb: wells producing 30-50 m³/h typically use 110-160 mm trunk mains; wells producing 50-100 m³/h use 160-200 mm; above 100 m³/h use 200-315 mm. Contact ALFA engineering for farm-specific sizing assistance.
Yes. PN 16 uPVC pipe (rated 16 bar at 20°C) is standard for well pump discharge lines. For systems with severe water hammer risk, PN 25 or Schedule 80 pipe can be specified. Slow-closing check valves and pressure relief valves should be included in the pump discharge design.
uPVC has a design life of 50+ years in buried service. It is immune to the saline, sabkha, and alkaline soil conditions found throughout Saudi agricultural regions. Many Saudi farms installed uPVC trunk mains in the 1980s-1990s that are still in full service today.
Both are excellent. uPVC is preferred for trunk mains and sub-mains where its higher stiffness provides better support at shallower burial depth, and its higher pressure rating per wall thickness is more economical. HDPE is preferred for small-diameter flexible laterals and coilable service lines where its flexibility is an advantage.
Yes. Complete range of uPVC pressure fittings including tees, elbows, reducers, saddle branches, flange adapters, and control valve connections. All fittings are pressure-rated to match the pipe system.
Contact our Jeddah engineering desk for instant project-specific pricing, technical submittals, and Material Approval Request (MAR) support.
