Metal Tower Packing Manufacturers & Pricelist

Traditional Raschig rings rely on a solid cylindrical perimeter, leaving their inner cylindrical surface largely un-wetted and inaccessible to passing vapor streams. In contrast, Metal Pall Rings feature windowed perforations with internal curved tongues that bend into the ring core. This structural change opens up the interior volume, enabling liquid film contact on both the inside and outside surfaces. As a direct result, gas throughput capacity increases by roughly 40% to 50%, while bed pressure drop decreases by nearly 35% compared to equivalent-sized Raschig rings at identical vapor-liquid loading rates.

Structured packing (such as corrugated sheet 250Y/350Y or wire gauze 500BX) is preferred in applications where available pressure drop is severely constrained, such as deep vacuum distillations, isomer separation columns with tight relative volatilities, and revamp projects designed to expand existing column hydraulic throughput. Structured packings offer significantly lower HETP (Height Equivalent to a Theoretical Plate, typically 250–400 mm) and minimal pressure drop per stage (ΔP ≤ 0.3–0.8 mbar/stage). Conversely, random packing remains the superior solution for high-pressure operations, fouling or particulate-laden slurries, highly corrosive wash columns, and smaller column diameters where segment fitting is mechanically impractical.

In rich amine reboilers and acid gas strippers where wet H₂S and CO₂ coexist at temperatures exceeding 115°C, austenitic 304/304L stainless steel is susceptible to chloride-assisted stress corrosion cracking (SCC) and localized pitting. In such environments, chemical plants specify AISI 316L, 317L, or Duplex 2205 with PREN (Pitting Resistance Equivalent Number) > 32. For severe conditions involving organic carboxylic acids or trace chlorides, high-nickel alloys such as Hastelloy C-276 or Inconel 625 ensure structural durability, eliminating downstream catalyst contamination caused by dissolved iron oxides.

Our manufacturing facility utilizes high-precision continuous servo-controlled progressive dies manufactured from tungsten carbide tool steels. Coil thickness is continuously monitored by non-contact laser micrometer sensors prior to entering the stamping station. Automated tumbling, vibratory deburring, and high-frequency screening remove metal burrs, ensuring safe handling for field loading personnel and preventing hot-spot liquid channel holdups during operational runs.

Because our facility maintains raw slit coils in common alloys (SS304, SS316L, Carbon Steel) in standard gauges (0.2mm to 1.5mm), emergency turnaround orders up to 50 m³ can be produced and packed within 3 to 5 business days. We coordinate expedited logistics via Ningbo, Shanghai, or Shenzhen ports with direct line-haul container dispatch, meeting refinery maintenance turnaround schedules and minimizing unit outage costs.