China PVC-U Waste Pipe Manufacturer & Sourcing Hub

PVC-U stands for Unplasticized Polyvinyl Chloride. Unlike flexible PVC used in hoses or flooring, PVC-U contains zero external plasticizers (such as phthalates or adipates), giving it a rigid, high-modulus molecular structure characterized by superior tensile yield strength (>45 MPa) and high ring stiffness. It is specifically intended for gravity soil, waste, and vent (DWV) piping. PVC-C (Chlorinated Polyvinyl Chloride) undergoes post-chlorination raising chlorine content from ~56% to ~67%, enabling higher continuous thermal resistance up to 95°C for specialized hot chemical applications. For commercial building waste lines under 60°C continuous fluid flow, PVC-U provides the optimal balance of rigidity, impact resilience, and life-cycle economics.

We supply pipelines manufactured strictly according to the client’s project jurisdiction:

• ISO Standards: ISO 3633 (Plastics piping systems for soil and waste discharge within the building structure).
• European Standards: EN 1329-1 (Above-ground building drainage) and EN 1401-1 (Underground buried drainage and sewerage).
• American Standards: ASTM D2665 (Standard Specification for Poly Vinyl Chloride (PVC) Plastic Drain, Waste, and Vent Pipe and Fittings) & ASTM D1785 Schedule 40/80.
• British/Commonwealth Standards: BS 4514 & BS 5255.
• Chinese National Standard: GB/T 5836.1 (Solid Wall) & GB/T 5836.2 (Fittings).

All factory dispatches include complete Mill Test Certificates (MTC) stating batch densities, Vicat softening points, drop impact tests, and longitudinal reversion rates.

Because plastic pipes are volumetric cargo with low density, shipping costs can skyrocket if loaded inefficiently. HZXY employs Telescoping Pipe-in-Pipe Nesting. For example, our loading crews slide 50mm diameter pipes inside 110mm pipes, which are then nested inside 160mm or 200mm host pipes. This quadruples the tonnage per 40ft High Cube container while remaining within road weight limitations. Furthermore, as an enterprise with 10M+ tons steel capacity, we allow buyers to consolidate PVC pipes with heavy carbon steel coils, flat bars, or structural beams in unified shipments, eliminating container dead space and minimizing overall freight expenditures.

We supply three distinct jointing configurations depending on site installation requirements: (1) Plain End for straight cut-to-length installation with external injection-molded coupling sleeves; (2) Solvent Cement Socket (Bell End), thermoformed on automated belling machinery for quick weld-bonding using specialized THF solvent cement; and (3) R-R / Rieber Gasketed Socket featuring an integrated factory-locked EPDM/NBR steel-reinforced elastomeric ring groove. Rieber elastomeric joints allow rapid push-fit assembly on underground pipelines, tolerating soil ground movement and thermal expansion without adhesive drying delays.

Yes, absolutely. HZXY maintains an open quality assurance protocol. Overseas buyers or their appointed third-party quality inspection firms (such as SGS, Bureau Veritas, TÜV, or Intertek) are granted full facility access at our Tianjin and Tangshan yards. Testing protocols regularly witnessed include: dimensional verification (OD, min/max wall thickness, out-of-roundness ovality), drop weight impact testing at 0°C (TIR < 10%), Vicat softening temperature determination, dichloromethane resistance test (to confirm degree of gelation), and hydrostatic burst pressure verification.

For standard stocked OD sizes (DN50, DN75, DN110, DN160) in classic grey or white RAL shades, there is no strict MOQ when combining with other construction goods, or a minimum of 1x20GP container for dedicated pipe orders. Custom wall thicknesses, custom lengths (e.g. 5.8m for optimal 20ft container packing or 11.8m for 40ft HC containers), and specific brand co-branding/OEM require an MOQ of 5 metric tons per specification. Typical production lead time is 10 to 15 days from deposit confirmation to vessel berthing at Tianjin Xingang.