Shanghai Zhongsu Pipe Co., Ltd., one of China's established PPR Fittings Suppliers, manufactures PPR FITTING components for hot and cold water plumbing, heating distribution and building services. Our range covers couplings, elbows, tees, unions and valves in sizes from 20 mm to 160 mm, produced from 100% imported Polypropylene Random Copolymer resin and joined by heat fusion to form permanent, leak-proof connections.
As a Custom PPR Pipes Fittings Company, we supply complete PPR piping packages — fittings matched to our PPR PIPE range — so project teams receive dimensionally consistent components from a single source. ZHSU operates a 70,000 m² production site in Jinshan District, Shanghai, with a CNAS-certified laboratory and full-process quality monitoring from raw material intake to finished goods release.
Our PPR Fitting Range
Each fitting family addresses a specific function in the pipeline: straight runs, direction changes, branch connections, demountable joints and flow control. We produce the full set in matching material grades so that a single fusion welding procedure applies across the system.
PPR Coupling
Straight and reducing sockets plus female and male threaded versions for joining pipe lengths or transitioning to metal threads. Sizes 20–160 mm.
PPR Elbow
45° and 90° bends, reducing elbows and threaded elbows for routing lines around corners and connecting fixtures.
PPR Tee
Equal, reducing and threaded tees for dividing or combining flow in distribution manifolds and branch lines.
PPR Union
Demountable joints for equipment connections, valve stations and maintenance points where a permanent fusion joint is not practical.
PPR Valves
Ball valves and related shut-off components for isolation at risers, branches and terminal equipment.
Application Fit and Material Behaviour
PPR fittings are specified where potable water quality, corrosion resistance and long service life matter. The material handles both cold potable water and hot water circuits, including heating distribution, without the scaling and electrochemical corrosion issues associated with metal systems.
- Building water supply and drainage — risers, floor distribution and fixture connections in residential, commercial and institutional buildings.
- Hot water and heating systems — PP-RCT grades extend the pressure/temperature envelope for higher-temperature circuits.
- Municipal and rural water networks — buried distribution lines where fusion joints reduce leak paths.
- Industrial process water — non-aggressive fluid transfer where chemical inertness is an advantage.
Fittings are produced from the same resin family as our pipes, so thermal expansion behaviour and fusion parameters remain consistent across the whole assembly. This matters in long risers and manifold-heavy layouts where mixed-material joints would introduce differential movement — a consistency buyers look for when comparing different PPR fittings suppliers.
Specifications and Configuration Options
The table below summarises the main selection variables we work with when configuring a PPR fitting package. Final dimensions and pressure ratings are confirmed against the project specification before production.
| Parameter | Options / Range | Typical Application Note |
|---|---|---|
| Nominal size | 20 mm to 160 mm | Small sizes for fixture connections; larger sizes for risers and mains |
| Material grade | PP-R; PP-RCT for higher temperature service | PP-RCT suits heating and high-temperature hot water circuits |
| Connection type | Socket fusion; female/male threaded; union | Threaded ends transition to metal fixtures; unions allow disassembly |
| Pressure class | Standard PPR pressure classes; PN 2.5 MPa referenced for tees | Class selected against system design pressure and temperature |
| Colour / marking | Standard colours; OEM/ODM marking available | Used for circuit identification and brand requirements |
| Packaging | Transparent bags in specified quantities, then dedicated cartons | Protects threads and sealing surfaces during transport |
Quality Control and Acceptance
ZHSU operates a CNAS-certified national laboratory and applies full-process monitoring from raw material procurement to finished product delivery. Every batch of goods undergoes sampling tests, and production inspections are carried out at regular intervals to measure and check relevant data. The quality inspection department performs additional checks at different stages.
- Raw material control — 100% imported resin from Borealis and South Korean suppliers.
- In-process inspection — regular measurement intervals during production.
- Batch sampling — every batch tested before release.
- Documentation — factory inspection reports available as quality assurance evidence.
- Management systems — ISO 9001, ISO 14001 and OHSAS 18001 certified; CE certificate held.
For project acceptance, we can align inspection scope with the specification: dimensional checks, fusion compatibility verification and batch traceability. Where third-party inspection is required, we coordinate access and documentation.
Installation, Maintenance and Serviceability
PPR fittings are joined by heat fusion, which produces a homogeneous, permanent bond without gaskets or adhesives. Correct fusion temperature, heating time and insertion depth are the critical variables; we provide welding guidance matched to each size and material grade.
- Fusion welding — socket fusion for pipe-to-fitting joints; threaded ends for transitions to metal components.
- Unions and valves — demountable or operable components placed at accessible locations for maintenance.
- Spare parts — standard fittings and valve components can be supplied for maintenance stock.
- Service life — our products carry a 50-year warranty period under the stated service conditions.
Because the joint is fused rather than mechanically sealed, the system has no elastomer gaskets to degrade in hot water service. This reduces long-term maintenance compared with gasketed or threaded metal systems.
Information We Use to Configure Your Solution
To prepare an accurate configuration and quotation, we work from the project's technical data rather than a generic catalogue selection. The following inputs allow us to confirm sizes, grades, quantities and delivery scope.
- Order list — fitting types, sizes and quantities by item.
- Trade terms — FOB, CIF, CNF or other applicable terms for the quotation.
- System parameters — design pressure, operating temperature and fluid type.
- Material grade — PP-R or PP-RCT depending on temperature service.
- Connection schedule — socket, threaded or union ends at each interface.
- Marking and packaging — OEM/ODM requirements and carton labelling.
- Delivery schedule — required quantities and timing against the production plan.
Typical delivery time is 15 days, subject to the order list and current production schedule. Regular pipes and pipe fittings are held in sufficient inventory, so there is no MOQ requirement for standard items; MOQ for pipes varies by size. We confirm transaction terms at quotation stage and keep customers updated on production progress at regular intervals.
Frequently Asked Questions
What sizes of PPR fittings does ZHSU manufacture?
We produce PPR couplings, elbows, tees, unions and valves in nominal sizes from 20 mm to 160 mm. Couplings are manufactured according to German DIN standards. Larger sizes are available for riser and main distribution applications.
Are your PPR fittings suitable for hot water and heating systems?
Yes. PP-R fittings serve hot and cold water plumbing, and PP-RCT grades extend the pressure/temperature envelope for higher-temperature circuits such as heating distribution. We confirm the appropriate grade against the system design temperature and pressure.
How are PPR fittings joined, and what installation support do you provide?
Fittings are joined by heat fusion, creating a permanent, leak-proof bond. We provide welding guidance matched to each size and material grade, covering fusion temperature, heating time and insertion depth. Threaded and union variants are available where demountable connections are needed.
What quality assurance documentation is available?
We can provide factory inspection reports as quality assurance evidence. ZHSU holds ISO 9001, ISO 14001 and OHSAS 18001 certifications and a CE certificate, and operates a CNAS-certified national laboratory. Every batch undergoes sampling tests, with in-process inspections at regular intervals.
Do you support OEM and ODM for PPR fittings?
Yes. As a Custom PPR Pipes Fittings Company, we support OEM and ODM requirements, including custom marking and packaging. Fittings are packed in transparent plastic bags in specified quantities and then placed in dedicated cartons to protect threads and sealing surfaces during transport.
What is the delivery time and minimum order quantity?
Typical delivery time is 15 days, depending on the order list and the factory's recent production schedule. Regular pipes and pipe fittings are held in sufficient inventory, so there is no MOQ requirement for standard fittings. MOQ for pipes varies by size — for example, 5000 metres for 20 mm pipe and 300 metres for 160 mm pipe.
Related Products and Categories
Our portfolio also includes PPR Equal Coupling, PPR Reducing Coupling for applications with different operating ranges, interfaces or integration requirements.
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