Wholesale Metal Random Packing Factory & Factories

While both belong to high-efficiency random packings, Metal Pall Rings utilize an open cylindrical geometry with stamped inward tongues, providing superior radial liquid distribution and high mechanical crush strength. Metal Saddles feature an asymmetric contour with a scalloped flange design that eliminates the orientation sensitivity inherent in cylindrical rings. In high-vapor-velocity distillation columns, Metal Saddles reduce pressure drop by roughly 20% to 30% compared to equivalent size Pall Rings and deliver a lower HETP, making them the preferred choice for vacuum distillation revamps where reboiler temperature must be minimized.

To prevent excessive liquid wall channeling, the standard chemical engineering rule of thumb requires a column diameter to packing size ratio (D/d) of at least 8:1 for random packings, with 10:1 to 15:1 being ideal. For instance, in a 600mm diameter distillation column, 25mm or 38mm packings are recommended. If a 50mm packing were used in a small column, a substantial fraction of the reflux liquid would migrate directly to the vessel walls rather than contacting the upward-flowing vapor across the bulk packing bed.

Yes, every wholesale production order leaves our factory with complete EN 10204 3.1 inspection documentation. We record heat numbers traceable back to primary steel mills, chemical composition analysis (Carbon, Chromium, Nickel, Molybdenum, Titanium, etc.), mechanical tensile and yield testing, and dimensional verification sheets. Clients can also arrange third-party witness testing via SGS, BV, or TÜV prior to factory sealing.

Metal structured packing offers lower pressure drop per theoretical stage, but metal random packing remains superior in services with severe fouling, particulate-laden streams, high operating pressures (> 3 to 5 bar where structured packing vapor capacity advantages diminish), corrosive systems requiring frequent bed washing, and small-to-medium column diameters where installing segmented structured packing blocks is labor-prohibitive. Furthermore, random packing is far more economical to replace during emergency plant turnarounds.

We manufacture standard wall thicknesses ranging from 0.3mm to 1.5mm depending on packing size and mechanical requirements. For example, standard 25mm SS316L Pall Rings are commonly produced in 0.4mm, 0.5mm, 0.6mm, or 0.8mm options. Thicker walls provide greater corrosion allowance and higher crush resistance in deep beds (>10m), whereas thinner walls provide higher piece count per cubic meter, greater specific void fraction, lower tare weight, and lower procurement cost.

We utilize heavy-duty 1.0 m³ or 1.2 m³ polypropylene jumbo bags (ton bags) equipped with moisture-resistant PE liners, corner lifting loops, and bottom discharge spouts. For high-precision alloys or delicate wire mesh rings (e.g., Theta / Dixon rings), we pack in double-corrugated fiberboard export cartons palletized on heat-treated ISPM-15 compliant wooden or steel pallets, wrapped in multi-layer stretch film with desiccants.

Standard stainless steel sizes (25mm, 38mm, 50mm Pall Rings and Saddles) are maintained in inventory coils with rolling stock, allowing standard 40ft High Cube containers (approx. 60–65 m³) to be manufactured and packaged in 7 to 14 calendar days. Custom exotic alloys such as Titanium Gr. 2, Monel 400, or Hastelloy C-276 typically require 3 to 4 weeks depending on raw coil delivery from certified alloy mills.