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RIRA
Procurement & Sourcing
Industrial Grade · Made in Iran
Custom UPVC Fittings & Large Diameter Couplings
RIRA supplies heavy-duty UPVC couplings and fittings engineered for large-scale infrastructure projects — produced to your exact diameter, length, and pressure-resistance requirements, including oversized sizes not held as standard stock.
Built for the Demands of Heavy Industrial Systems
Custom UPVC coupling, produced for an industrial pipeline application
Reinforced UPVC fitting, ready for inspection before shipment
Made to Your Project Specification
Standard UPVC fittings are not always enough for big industrial projects. For example, a project may need a wider pipe, a longer joint, or a part that can handle more pressure than the usual catalog item. In that case, RIRA works directly with Iranian factories to build the part to your own drawing.
First, we look at your specs and check if the part can be made. Next, our partner factory builds it, and then our team checks the quality before it ships. As a result, you get a part that is hard to find off the shelf, at a fair price from a local Iranian maker.
This service is especially useful for water pipelines, irrigation systems, and large drainage networks. After all, just one missing or wrong-sized joint can delay an entire project, so having a custom part ready on time really matters.
110–600mm
Diameter Range
Custom
Length & Tooling
High
Pressure Resistance
Available Diameters
Standard Production Sizes
RIRA regularly produces custom UPVC couplings and fittings across the following diameters. Sizes outside this range, or non-standard lengths and configurations, can also be manufactured — share your drawing and we will confirm feasibility.
110
MM
125
MM
160
MM
200
MM
250
MM
300
MM
400
MM
500
MM
600
MM
Need a size, wall thickness, or pressure class not listed here? Send us your technical drawing for a feasibility check.
Why These Fittings
Engineered for Heavy-Duty Performance
High Pressure Resistance
We can adjust the wall thickness and material grade, so the part meets your exact pressure needs.
Large Diameter Production
We make sizes from 110mm up to 600mm as standard. So if you need a bigger or unusual size, just ask and we will check if it can be made.
Built to Drawing
Just send your drawing or a sample part, and we will set up the tools and build it to match.
Quality Inspected
Before any part leaves the factory, we check it against the agreed size and pressure rating.
Flexible Tooling
We can also build custom molds for special couplings, reducers, and connector pieces.
Export Ready
We also take care of packing, paperwork, and shipping, so your large parts arrive safely.
Applications in Infrastructure Projects
Custom UPVC couplings and fittings produced by RIRA are suited to a wide range of heavy-duty industrial and infrastructure applications, including:
Water Transmission Pipelines
Irrigation & Agricultural Networks
Industrial Drainage Systems
Municipal Utility Infrastructure
Refinery & Petrochemical Plants
Power Plant Cooling Systems
Large-Scale Construction Projects
Sewage & Wastewater Treatment
How It Works
From Drawing to Delivery
01
Share Your Specification
First, send us your size, pressure rating, length, and a drawing or sample if you have one.
02
Feasibility & Quotation
Then, we check with our factory if it can be made, and send you a clear price quote.
03
Production & Inspection
Once approved, the part is made and then checked for size and pressure before it ships.
04
Export & Delivery
Finally, we handle the paperwork and shipping, so the part reaches your project site.
Need a Custom UPVC Fitting for Your Project?
Send us your size, pressure need, and project timeline. Then we'll check feasibility and give you a fair price from Iranian makers.