Tube Settler for Sedimentation Tank

What "high-quality manufacturing" means in tube settlers

In the water treatment equipment market, the difference between a tube settler that lasts 5 years and one that lasts 15 comes down to three manufacturing decisions most buyers never see: raw material grade, extrusion process control, and quality verification depth.

Material purity is the foundation. Many manufacturers cut costs by blending recycled or regrind PP/PVC into the extrusion feed. Recycled content introduces contaminants, reduces UV resistance, and creates micro-voids in the channel walls that become crack initiation points under hydraulic loading. Juntai uses 100% virgin polymer from audited suppliers with full melt-flow-index traceability - every raw material batch is tested before it enters production. The result: uniform wall thickness, predictable chemical resistance, and a 10–15 year service life even under continuous outdoor exposure.

Extrusion precision determines hydraulic performance. Tube settler efficiency depends on every channel having identical geometry - a variance of just 0.3 mm in channel width creates preferential flow paths that short-circuit the settling process. Juntai's 55 extrusion lines run with closed-loop dimensional monitoring, sampling every 2 hours against a go/no-go gauge. The 60° inclination angle is built into the die geometry, not formed post-extrusion, ensuring angle consistency across every module in a batch.

Manufacturing advantages

Technical specifications

Material 100% virgin PP (food-grade) / 100% virgin PVC (industrial-grade) Manufacturing method Precision extrusion with tongue-and-groove interlocking Channel diameters φ25 mm / φ35 mm / φ50 mm / φ80 mm Wall thickness options 0.5 mm / 0.7 mm / 1.0 mm / 1.2 mm (diameter-dependent) Module dimensions 1,000 × 1,000 × 866 mm (L×W×H) Installation angle 60° (die-built, not post-formed) Flow regime Laminar (Re < 500) TSS removal efficiency ≥ 92% (up to 97% under optimal conditions) Surface loading rate 0.8–6.0 m³/h·m² (application-dependent) Operating temperature (continuous) -10°C to 70°C (PP); -5°C to 55°C (PVC) Short-term temperature Up to 80°C (PP) UV stabilisation Available for both PP and PVC Sedimentation area 7–120 m²/m³ depending on tube diameter Service life 10–15 years Warranty 5+ years with online after-sales support MOQ No minimum order quantity Shipping terms FOB Ningbo / Shanghai

Extrusion vs thermoforming - manufacturing method comparison

Choose your tube settler - by diameter & wall thickness

Four diameters × four wall thickness options. Selection depends on influent TSS, hydraulic loading, and chemical exposure. Thicker walls = longer service life in aggressive environments.

φ25 mm Surface area: ~120 m²/m³ Best for: Drinking water, low-turbidity raw water Wall thickness: 0.5 mm SSA: Highest in range Material: PP (food-grade) → Potable water plants, beverage processing, pre-RO filtration

φ35 mm Surface area: ~105 m²/m³ Best for: Municipal STP, general industrial effluent Wall thickness: 0.5 / 0.7 / 1.0 mm SSA: Second highest Material: PP or PVC (UV-stabilised) → Secondary clarifiers, stormwater pre-treatment

φ50 mm Surface area: ~95 m²/m³ Best for: Sewage, mining, chemical plant effluent Wall thickness: 0.5 / 0.7 / 1.0 mm SSA: Balanced SSA & flow capacity Material: PVC (industrial-grade) → Mining tailings, food processing, textile dye effluent

φ80 mm Surface area: ~95 m²/m³ Best for: Extreme TSS, coarse solids, high-load primary treatment Wall thickness: 0.8 / 1.0 / 1.2 mm SSA: Lowest SSA, highest flow Material: PVC (heavy-duty) → Dredging runoff, quarry wash water, primary sedimentation

Applications & industry use cases

Drinking Water Potable water treatment - NSF/ANSI 61 certified φ25 mm food-grade PP modules (0.5 mm wall). Reduces turbidity to <2 NTU ahead of filtration. NSF/ANSI 61 certification ensures material safety for drinking water contact. Municipal Wastewater Primary & secondary clarifiers - 500–50,000 m³/d φ35–50 mm PVC. Reduces downstream BOD load, retrofit into existing basins for 2–3× capacity without civil works. Industrial Wastewater Mining, chemical, food & beverage processing φ50–80 mm heavy-duty PVC (1.0–1.2 mm wall). Chemical-resistant formulation handles acidic/alkaline effluent, variable TSS, and shock hydraulic events. OEM & Distributor Supply Wholesale factory-direct pricing, custom branding 8,000+ ton annual capacity supports bulk orders. ODM/OEM with custom packaging, private labelling, and configuration-to-order available. Free samples for qualified buyers.