Metal Conjugate Ring | Windowed High-Flow Tower Packing

Metal Conjugated Ring

Metal conjugate ring is a high-efficiency metal tower packing built around a louvered wall: two staggered rows of windows are punched into a metal cylinder and the cut tongues are bent inward, which distributes gas and liquid evenly and raises mass-transfer efficiency by more than 30 percent over older packings. About 35 percent of the wall is open, so gas passes with little resistance and the pressure drop stays low while capacity stays high. Made from carbon steel or stainless steel — 304, 304L, 410, 316 or 316L — it resists strong acids and works across a very wide band, from cryogenic lows to roughly 600 degrees, suiting vacuum, hot and high-flow columns. Sizes 16 to 90 mm; model RJ-2605.

Louvered metal ring — two staggered rows of windows with inwardly bent tongues.
Raises mass-transfer efficiency by more than 30 percent over traditional packings.
About 35 percent open wall area for low gas resistance and low pressure drop.
Carbon steel or stainless (304 / 304L / 410 / 316 / 316L); acid and heat resistant.
Works from cryogenic lows to about 600 degrees; sizes 16 to 90 mm; model RJ-2605.

Technial Parameters

Parameter	Details
Material	Carbon steel, SS 304 / 304L / 316 / 316L, 410, etc.
Size	DN16, DN25, DN38, DN50, DN76 (custom available); to 90 mm
Open area (wall)	About 35%
Efficiency	About 30%+ over traditional packings
Temperature range	−200 °C to +600 °C (material-dependent)
Applications	Distillation columns, scrubbers, absorption towers, quench towers

The supplier spec sheet lists the ~35% figure as void fraction; it is the open area of the ring wall. The packed-bed void of a thin-wall metal ring is much higher (typically around 90%+). Confirm figures before ordering.

Property	Value
Product Type	Metal random packing (conjugate ring)
Material	Carbon steel; stainless steel 304, 304L, 410, 316, 316L
Model NO.	RJ-2605
Standard Sizes	16, 25, 38, 50, 76, 90 mm (DN16–DN90; custom available)
Structure	Cylinder with two staggered rows of windows and inward tongues (louvered)
Open Wall Area	About 35%
Efficiency	About 30%+ above traditional packings
Service Temperature	About −200 to +600 °C (by metal)
Advantages	High mass transfer, low pressure drop, high capacity, acid and heat resistant, reusable
Applications	Distillation, absorption, stripping, cooling and heat recovery; scrubbers and quench towers; petrochemical, wastewater, pharma, food
Trademark	RONGJIAN
Origin	Jiangxi, China
HS Code	8419909000
Transport Package	Carton box / ton bag / steel drum

FAQs

How is the metal conjugate ring's louvered wall built?

A metal conjugate ring is a high-efficiency tower packing made from a thin metal cylinder whose wall is worked into a louvered pattern. Two staggered rows of rectangular windows are cut into the wall, and the little tongues left by the cuts are bent inward toward the axis. Those two features do the work. The windows open the wall up, about 35 percent of it becoming free area, so gas and liquid move between and through the rings freely, at a low pressure drop. The inward tongues catch the falling liquid and spread it evenly across the ring, breaking and renewing the film, which lifts the packing's mass-transfer efficiency by more than 30 percent over a plain ring. Being metal and thin-walled, the ring is also strong and very open, so it carries a high load. It is, in effect, an optimised windowed ring for demanding columns.

What steels is it available in, and how hot or cold can it run?

The ring can be ordered in several steels, matched to the duty. For a clean, non-corrosive stream, plain carbon steel is the economical pick. Where corrosion is a concern, the austenitic grades 304 and 304L are the usual choice, and moving to 316 or 316L, which carry molybdenum, buys resistance to chlorides and a broader sweep of acids. There is also 410, a hardenable grade, when abrasion is the worry. The great advantage of any steel over a resin is its reach in temperature: this packing stays sound from the deep cold of cryogenic service to around 600 degrees, whereas a plastic tops out near 150. That is exactly why it is chosen for vacuum stills, hot scrubbers and other severe columns. Give us the fluid, its strength and its working heat, and the grade is easily fixed.

What is a metal conjugate ring used for?

The metal conjugate ring is a versatile workhorse for tough gas-liquid columns. It goes into distillation columns, absorption and stripping towers, scrubbers, cooling and quench towers, and heat-recovery service. By industry that spans petrochemical processing, wastewater treatment, pharmaceuticals and food processing. The draw everywhere is the same trio: strong mass transfer from the windowed, tongued wall; a low pressure drop and high capacity from the open form; and a steel body that laughs off aggressive acids and a broad temperature swing. Versatile and easy on the budget, it is among the most-used metal packings. Send us the process and we will confirm the ring, the steel and the size.

Metal or plastic conjugate ring — which do I need?

They are the same idea in two materials, chosen by how hard the service is. A plastic conjugate ring is moulded from resins such as polypropylene or PVDF and suits cool-to-warm corrosive duty, up to roughly 150 degrees; it is light and cheap. The metal conjugate ring, formed from steel, is for everything beyond that: it keeps its shape and strength under load, resists a broader range of chemicals, and serves from cryogenic lows up to roughly 600 degrees, so it is the one for hot, vacuum or high-pressure columns. Both share the conjugate ring's aim of high efficiency at a low pressure drop; the choice comes down to temperature, mechanical duty and budget. If your column runs hot or under vacuum, use the metal ring; if it is cool and corrosive, plastic may be enough. Tell us the conditions and we will point to the right one.

The metal conjugate ring is a windowed, or louvered, metal packing. A thin metal cylinder, carbon steel or stainless steel, has two staggered rows of windows punched into its wall, with the cut tongues folded inward. The open wall and the inward tongues are the whole point of the design: gas and liquid move freely through the roughly 35 percent open area, while the tongues catch and re-spread the liquid so the two phases mix thoroughly. That combination lifts efficiency well above a plain ring, at a low pressure drop, and because the ring is metal it keeps its shape and strength across a very wide temperature range.

Where the design earns its keep, feature by feature:

Design feature	What it delivers
Two staggered rows of windows	More than 30 percent higher mass-transfer efficiency than older packings
Inwardly bent tongues	Even fluid distribution and continual renewal of the liquid film
About 35 percent open wall area	Low gas resistance, so a low pressure drop at high flow
Thin steel wall	High capacity and strength, from deep cold up to roughly 600 degrees

Those qualities make it a versatile, cost-effective packing for demanding gas-liquid work: distillation columns, absorption and stripping towers, scrubbers, cooling and quench towers, and heat recovery, across petrochemical, wastewater, pharmaceutical and food plants. It is made from carbon steel or stainless steel 304, 304L, 410, 316 or 316L, in sizes from 16 to 90 mm. For the plastic form of the same ring, used in cooler corrosive service, ask about the plastic conjugate ring instead. For a quote, send the tower duty, the chemistry and the operating heat, and we will size it and pick the steel.