Fittings for the full building loop — supply, hot & cold, drain-waste-vent
HengHaoSen supplies building piping as a system: PVC Schedule 40/80 pressure fittings cataloged to ASTM D2466/D2467, PVC DWV (ASTM D2665) and ABS DWV (ASTM D2661) for drain-waste-vent, and PP-R for hot & cold indoor lines in S3.2/PN20 and S2.5/PN25 classes with brass-insert valves. Over 2,100 part numbers across four catalog lines, with OEM branding and export packing available.
PVC Schedule 40 fittings are injection moulded from unplasticised PVC to the Schedule 40 wall series: pressure-rated at ambient temperature, resistant to acids and alkalis, non-conductive, and joined by solvent weld in a single operation.
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PVC DWV fittings serve gravity drain, waste and vent systems. They carry no internal pressure, so the design work sits in the flow path: bends and sanitary tees curve into the main, wyes join at 45°, and solids travel with the water instead of settling at the joint.
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ABS drainage fittings are lighter than PVC at the same size, take impact better at low temperature and cure fast under solvent weld, which suits residential stacks and prefabricated plumbing packs assembled on site in North America.
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PP-R is random copolymer polypropylene: pipe and fitting fuse into one body at the socket, so the joint carries no adhesive, no thread and no gasket, and the system is designed for continuous hot water service at 70 °C with transient peaks to 95 °C — the basis for hot and cold supply, underfloor and radiant heating, central air conditioning and industrial liquid transfer.
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Schedule 80 shares the PVC-U material of Schedule 40 but carries one wall class more at the same nominal size, so it holds higher working pressure; the dark grey body marks the difference on site. It is the usual choice for commercial and industrial water lines, pump rooms and water treatment skids.
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Ball, check and butterfly valves quoted with your order
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Technical support, flexible shipping, OEM manufacturing and quality assurance — the services behind every solution.
Custom mould development, private labeling, customized packaging and tailored product specifications to help you build a competitive product line.
Project specification guidance, installation recommendations, pressure-rating advice and material and standard compatibility checks for distributors, contractors and project managers.
Shipments from the Yantian, Nansha, Shunde and Guangzhou ports, LCL and FCL options, split or staged deliveries for project orders and full export documentation support; lead times are confirmed with each quotation.
Product samples, material certificates, testing reports and compliance documentation to support your evaluation; every shipment is checked against international standards.
Our international sales team offers fast communication, professional service and long-term partnership support for distributors, wholesalers, contractors and OEM partners, in English, Spanish, Portuguese and Chinese.
