Metal Raschig Rings for Corrosive and High-Temperature Tower Packing Service
Metal Raschig rings are random tower packing components used in absorption, scrubbing, stripping, quenching, distillation support beds, and gas purification systems. Buyer checks should focus on material grade, size, wall thickness, surface finish, corrosion-service suitability, dimensional tolerance, packing density, documentation, export classification, and palletized ton-bag packing requirements.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
Product form: smooth cylindrical metal Raschig rings for random tower packingIndustrial tower packing / random metal packingCandidate for sourcing page after material-grade and documentation verification
Product form: smooth cylindrical metal Raschig rings for random tower packing
CAS: not applicable; article/equipment component rather than a discrete chemical substance
Material options stated by source: SS304, SS304L, SS316, SS316L, carbon steel, titanium, copper; confirm exact grade before RFQ
Standard sizes stated: DN15, DN25, DN38, DN50, DN76, DN100; page also lists 6 mm, 10 mm, 13 mm, 16 mm, 25 mm, 38 mm, 50 mm, 76 mm
Wall thickness stated: 0.5-2.0 mm with ±0.1 mm tolerance; tabulated options include 0.3-1.2 mm
Bulk density examples: 203-430 kg/m3 depending on size and wall thickness
Surface area examples: 62-350 m2/m3 depending on size
Free volume examples: 93-97.4% depending on size
Operating temperature claim: up to +750°C for SS304; confirm against actual alloy, process media, and design conditions
Surface finish option stated: electropolishing to Ra ≤ 0.4 μm for sticky fluids
Coating option stated: PTFE coating for HF service; require written compatibility review and coating specification
Certifications stated: ASTM B366 and ISO 9001; confirm certificate scope, material standard, and batch traceability
Who uses this page
Target buyers
Chemical plant procurement teams
EPC contractors for tower internals and mass-transfer equipment
Petrochemical and refining maintenance buyers
Gas scrubbing and exhaust treatment system builders
Distillation column retrofit contractors
Water treatment and marine cooling system integrators
Metallurgy and acid gas treatment equipment buyers
Industrial distributors for tower packing and column internals
Before matching
Documents to check
CAS number, grade, assay, and impurity profile
SDS, COA, TDS, HS code, and transport classification
Destination-market import documents before supplier matching
Package and route
Packing notes
Source lists ton bags with pallets as transport package
Confirm net weight per bag, pallet dimensions, pallet material, stacking limit, and container loading plan
Request export packing suitable for sea freight, moisture protection, and material-grade segregation
Ask whether mixed sizes or mixed alloys can be packed separately with clear labels and batch numbers
For coated or electropolished items, request protection against abrasion during transport
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Use context
Common applications
Acid gas scrubbing towers where robust metal random packing is specified
Quenching towers requiring corrosion-resistant or heat-resistant packing
Absorption and stripping columns with moderate efficiency requirements
Support beds under structured packing or other internals
Replacement of damaged random packing in existing towers
Dirty gas or slurry-prone service where simple geometry may reduce fouling risk
High-temperature service after alloy and process compatibility review
Marine or chloride-rich environments when suitable stainless or titanium grade is confirmed
How we compare
Sourcing options
Standard SS304 or SS316/316L Raschig rings in DN15-DN100 sizes
Carbon steel Raschig rings for compatible non-corrosive or cost-sensitive service
Titanium or copper options for specific corrosion-service requirements subject to engineering review
Electropolished surface finish for lower adhesion requirements
PTFE-coated option where coating compatibility, adhesion, thickness, and documentation are specified
Bulk ton-bag pallet shipment for plant maintenance or project installation
Custom size, wall thickness, or tolerance quotation based on tower design data
Human review
Compliance notes
CAS number is generally not applicable because the product is a fabricated packing article; confirm whether any coating, passivation residue, or surface treatment requires chemical documentation
Request material certificates for alloy grade, heat/batch number, and applicable standards before shipment
For stainless steel, titanium, copper, carbon steel, or coated packing, confirm HS code, country-of-origin statement, and export invoice description
Source lists HS Code 8419909000; buyer should verify local import classification with customs broker
Check whether the shipment is non-DG under transport rules; coated products or surface-treated goods may require additional documentation depending on treatment chemistry
Request SDS only if coatings, treatments, residues, or accompanying chemicals are supplied; otherwise request article/material declaration
No regulatory approval, corrosion performance, or process suitability should be assumed without buyer-side engineering review
For HF, HCl, chloride, sulfuric acid, or high-temperature service, require written material compatibility confirmation and operating condition limits
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
metal Raschig ringsrandom tower packingstainless steel Raschig ringcorrosive service packinghigh temperature tower packingchemical tower internalsscrubber packingdistillation support packingabsorption tower packingSS316L random packingindustrial packing mediacolumn packing supplier
Related product options
Build a broader quote package from adjacent options.
Buyers often compare neighboring grades, forms, or route options before sending one consolidated RFQ.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
Questions to confirm
Which exact alloy grade is required: SS304, SS304L, SS316, SS316L, carbon steel, titanium, copper, or another specified material?
What CAS/spec requirement applies to the buyer's project, and is this being purchased as an article with no chemical CAS assignment?
What size, wall thickness, bulk density, surface area, and free volume are required for the tower design?
Is the packing intended for absorption, scrubbing, stripping, quenching, support bed service, or another duty?
What process media, temperature, pressure, chloride level, acid concentration, solids loading, and fouling risk should the supplier review?
Is electropolishing, PTFE coating, passivation, or other surface treatment required?
What dimensional tolerance, burr control, cleanliness level, and surface roughness must be met?
Can the supplier provide MTC/COA, ISO certificate, inspection report, packing list, commercial invoice, HS code declaration, and country-of-origin document?
Checks before quote
CAS number is generally not applicable because the product is a fabricated packing article; confirm whether any coating, passivation residue, or surface treatment requires chemical documentation
Request material certificates for alloy grade, heat/batch number, and applicable standards before shipment
For stainless steel, titanium, copper, carbon steel, or coated packing, confirm HS code, country-of-origin statement, and export invoice description
Source lists HS Code 8419909000; buyer should verify local import classification with customs broker
Check whether the shipment is non-DG under transport rules; coated products or surface-treated goods may require additional documentation depending on treatment chemistry
Request SDS only if coatings, treatments, residues, or accompanying chemicals are supplied; otherwise request article/material declaration
No regulatory approval, corrosion performance, or process suitability should be assumed without buyer-side engineering review
For HF, HCl, chloride, sulfuric acid, or high-temperature service, require written material compatibility confirmation and operating condition limits
Next step
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.
