Shanxi Kaisheng Plastic Co., Ltd. is one of the most reliable manufacturers and suppliers of pp-r fittings in China. Please feel free to buy CE approved pp-r fittings in stock here from our factory. All customized products are with high quality and competitive price. Contact us for quotation.
Product Overview
Engineered for reliable fluid transmission, our PP-R Fittings are designed for seamless socket-fusion connection with polypropylene random copolymer (PP-R) pipes.
Technical Specifications & Material Selection
Size Range: DN20 mm to DN160 mm (1/2" to 6").
Pressure Ratings: PN10, PN16, PN20, and PN25 (covering standard to high-pressure demands).
Execution Standards: Manufactured strictly in compliance with DIN 8077, DIN 8078, ISO 15874, and EN ISO 15874.
Material Performance: Built from 100% virgin PP-R raw resin (Type 3), yielding a corrosion-free, scale-resistant interior flow path.
Dual hot/cold suitability: Designed for continuous operating temperatures up to 70°C, short-term up to 95°C (max limit 110°C). Smooth interior walls ensure optimal hydraulic efficiency and low friction loss.
Available Fitting Configurations
Couplings & Reducers: Equal couplings, reducing couplings, and brass-inserted male/female threaded adapters (crafted from high-grade HPb59-1 brass).
Elbows & Tees: 90° and 45° elbows, equal tees, reducing tees, and wall-mounted bridge/crossing elbows.
Valves & Accessories: PP-R ball valves, concealed stop valves, end caps, cross-overs, split flanges, and clamping saddles.
Structural Design & Anti-Rotation Socket Fusion
Anti-Rotation Brass Inserts: Transition fittings use HPb59-1 brass with swallowtail/knurled anchoring grooves to securely lock metal and plastic together, reducing insert rotation or loosening during threaded installation.
Optimized Socket Geometry: A slight internal taper guides pipe insertion smoothly, reducing scraping and promoting a consistent fusion zone.
Fusion Integrity: Joint performance depends on alignment, heating temperature (260°C ± 10°C), insertion depth, and cooling time. Project-specific installation guidance is available upon request.
Application Scenarios
Residential & Commercial Plumbing: Hot and cold tap water networks in high-rise apartments, hotels, and office complexes.
Heating Systems: Dedicated networks for underfloor heating, radiator connections, and closed-loop central heating.
Industrial & Municipal Use: Process water lines, compressed air distribution, and water treatment plants ( Note: Chemical compatibility must be verified for aggressive industrial media ).
4-Step Factory Quality Control Protocol
Raw Material MFI Testing
Every batch of PP-R resin is tested for density and melt flow rate before entering extrusion and injection molding.
Molding Precision Control
Automated injection machines with German-engineered molds maintain wall thickness tolerance within ±0.1 mm, helping minimize structural weak points.
Hydrostatic Pressure Testing
Samples from daily production runs undergo internal water pressure testing at 20× normal operating pressure for one hour to verify fusion joint integrity.
Dimensional & Thread Inspection
Caliper and thread-gauge checks are performed on all brass-insert fittings to help prevent leakage during installation.
Compliance, Certification & Traceability
Management System: Manufactured under ISO 9001 and ISO 14001 standards.
Product Testing Reports: Available upon request, including long-term hydrostatic pressure test reports, toxicological safety test reports for potable water contact, and thermal stability assessments.
Batch Traceability: Every fitting is laser-coded with production date, machine number, and material batch code, allowing full traceability from raw resin to the final installation site.
Frequently Asked Questions
Q: What is your Minimum Order Quantity (MOQ) for custom-sized or OEM PP-R fittings?
A: Our standard MOQ depends on the size and type, typically starting at 1,000 pieces per item for standard stock sizes. For custom OEM/ODM molds or private labeling, we evaluate requirements case-by-case during project scoping.
Q: Do you provide factory inspection reports or third-party laboratory testing before shipment?
A: Yes. Every production batch undergoes strict pre-shipment inspection (PSI), and we can provide factory test reports or arrange third-party testing (like SGS or BV) upon buyer request.
Q: What is your standard lead time for bulk container orders?
A: Standard production lead time is 15 to 25 days after order confirmation and deposit receipt, depending on the container volume and specific fitting configurations.
Q: What are your accepted international payment terms for new wholesale clients?
A: We commonly accept T/T (Telegraphic Transfer with 30% deposit and 70% balance against the B/L copy) and L/C at sight for qualifying volume orders.
Q: How are the fittings packaged for international sea or air freight to prevent damage?
A: Fittings are packed in inner polybags, heavy-duty export-standard corrugated cartons, and then secured on fumigation-free wooden or plastic pallets wrapped with protective film.
Q: Can you mix different sizes of PP-R pipes and fittings into a single FCL or LCL shipment?
A: Yes, we fully support mixed container loading (FCL) as well as less-than-container load (LCL) consolidated shipments to optimize your inventory and logistics costs.
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