Gray polypropylene corrosion-resistant exhaust duct with welded flanges

Системы распределения воздуха в чистых помещениях

Коррозионно-стойкий выхлопный труб PP

A welded polypropylene duct system for extracting humid or chemically aggressive air that would rapidly attack ordinary galvanized steel ductwork.

Chemical-Resistant PP Wall
Thermoplastic Welded Seams
Smooth Non-Metallic Interior
Rectangular or Round Fabrication

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Введение продукции

Polypropylene exhaust ductwork provides a non-metallic path for corrosive vapors from laboratories, chemical rooms and wet processes. Straight sections and fittings are fabricated from homogeneous PP sheet or pipe, joined by hot-gas or extrusion welding to create continuous thermoplastic seams. Round duct is preferred for pressure stability, while rectangular sections integrate with scrubbers and equipment plenums. Supports allow for thermal expansion, and the selected PP grade is matched to the chemical concentration and operating temperature.

Основные характеристики

Homogeneous polypropylene resists many acids, alkalis and humid exhaust conditions without a metal coating.

Thermoplastic welding creates continuous seams of compatible material rather than exposed mechanical folds.

The smooth low-surface-energy interior discourages residue adhesion and simplifies rinsing.

Lightweight fabricated sections reduce support loads compared with thick corrosion-resistant metal systems.

Обеспокоенность клиентов продуктами

Corrosive exhaust selection must consider the complete chemical mixture, condensate, temperature and thermal movement rather than material name alone.

Acidic condensate removes zinc coating and perforates steel exhaust duct.A compatible PP grade provides corrosion resistance through the full wall thickness.

Rigidly fixed plastic duct buckles as operating temperature changes.Guided supports and planned expansion sections allow controlled axial movement.

Poor field welds leave pinholes in hazardous exhaust seams.Qualified thermoplastic welding and visual seam inspection produce continuous fusion joints.

An incompatible solvent softens the selected plastic.Material selection is checked against the actual vapor and condensate composition before fabrication.

Типичные приложения

Laboratory fume extractionChemical storage-room exhaustWet-process ventilationBattery manufacturing exhaustScrubber inlet and outlet ductwork

Технические параметры

Representative ranges for fabricated polypropylene corrosive-exhaust ductwork are listed below.

Основной материал	PP-H polypropylene sheet or extruded pipe
Толщина панели	3–10 mm, selected by section size and pressure
эффективная ширина	110–1200 mm round diameter or rectangular side dimension
Максимальная длина	3000–5000 mm per fabricated straight section
Толщина линий стали	3–10 mm homogeneous PP wall in place of steel facing
Плотность ядра	Approximately 900–920 kg/m³ solid polypropylene
Теплопроводимость	Approximately 0.22 W/(m·K) for polypropylene
Поверхностная отделка	Smooth natural gray PP surface with optional conductive black grade
Объединенный тип	Hot-gas or extrusion-welded seam with welded flange or socket connection
Customization	Доступно в зависимости от предполагаемого применения и операционной среды.

Доступные варианты

PP-H, flame-retardant PP or conductive PPRound or rectangular geometryWelded inspection openings and drainsExpansion joints and scrubber transition pieces

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