{ "@context": "https://schema.org", "@type": "Product", "name": "Metal Wire Mesh Structured Packing - Corrugated Gauze Packing 250Y/500Y/700Y", "description": "High-efficiency metal wire mesh structured packing (corrugated gauze type) in 250Y, 350Y, 500Y, 700Y. SS304, 316L, copper, nickel, Hastelloy. HETP as low as 150mm for precision distillation and vacuum service.", "brand": {"@type": "Brand", "name": "FXSINO"}, "sku": "FS-MWMSP", "image": "/storage/uploads/images/202609/24/IMG_WM_HERO.jpg" } Figure 1: Corrugated wire mesh packing discs (250Y & 500Y) — the highest-efficiency structured packing for precision distillation. Metal Wire Mesh Structured Packing: 250Y/500Y/700Y in SS304, 316L & Special Alloys Engineer's Brief: Also known as corrugated wire gauze packing (or "ripple" type in some markets), metal wire mesh structured packing delivers the lowest HETP of any tower packing — as low as 150 mm per theoretical stage. It is the default choice for precision distillation, isotope separation, and heat-sensitive vacuum service. Compare with our general Structured Packing for Distillation for perforated-plate alternatives. 1. What Is Metal Wire Mesh Structured Packing? Metal wire mesh structured packing consists of corrugated (gauze) sheets woven from fine metal wire, assembled into cylindrical discs that fit the tower diameter. The corrugations run at alternating angles (typically 45° for "Y" type, 30° for "X" type), creating a highly uniform network of triangular flow channels . Unlike perforated plate packing (which uses stamped metal sheets), wire mesh uses woven gauze — providing 3× more surface area per unit volume and exceptional capillary wetting. This translates to HETP values of 150–400 mm, compared to 400–600 mm for plate-type structured packing . The trade-off: lower flood capacity (F-factor 1.5–2.5 Pa0.5) and higher cost. Figure 2: Woven wire gauze with 45° Y-type corrugations — the microstructure that delivers HETP as low as 150 mm. 2. Technical Specifications & Dimensions All data below are industry-standard values for SS304/316L wire mesh packing. FXSINO manufactures to your tower ID with segment heights of 50–200 mm per disc: Model Surface Area (m²/m³) Void Fraction (%) Typical HETP (mm) ΔP (kPa/stage) F-Factor (Pa0.5) 250Y 250 95.0 250–400 0.2–0.3 2.0–2.5 350Y 350 93.0 180–280 0.15–0.25 1.8–2.3 500Y 500 90.0 120–200 0.1–0.2 1.5–2.0 700Y 700 85.0 80–150 0.08–0.15 1.2–1.8 Data compiled from industry standard wire mesh structured packing datasheets. HETP and ΔP vary with liquid/vapor load. Replace with FXSINO measured values before publication. 3. Material Selection Guide Wire mesh packing is available in a wide range of metals. Selection follows the same corrosion logic as other tower internals — see our 304 vs 316L Structured Packing guide for detailed thresholds: Material Corrosion Resistance Max Temp Best Applications Relative Cost SS304 Good (non-chloride) 450°C Organics, solvents, non-corrosive fractions Baseline SS316L Excellent (chloride-resistant) 450°C Pharma, chlorinated solvents, acidic cuts +15–25% Copper / Brass Good (non-oxidizing) 200°C Solvent recovery, anti-static service +20–30% Nickel / Monel Excellent (caustic, HF) 500°C Caustic distillation, fluorochemicals +100–150% Hastelloy C-276 Superior (strong acid/chloride) 650°C HCl, Cl2, severe corrosive service +200–300% Figure 3: SS304 (left) vs SS316L (right) wire mesh discs — both deliver identical efficiency; 316L adds chloride immunity. 4. Wire Mesh vs. Perforated Plate Structured Packing Factor Wire Mesh (This Page) Perforated Plate (Distillation Page) HETP 150–400 mm (excellent) 400–600 mm (good) Flood Capacity Low (F 1.5–2.5) High (F 2.5–3.5) Cost per m³ Higher (woven gauze) Lower (stamped sheet) Best For Precision separation, vacuum, heat-sensitive High-throughput absorption, general distillation 5. Primary Applications • Precision Distillation: Isotope separation, enantiomer resolution, close-boiling azeotropes — where HETP < 200 mm is mandatory . • Vacuum Distillation: Heat-sensitive chemicals (vitamins, fatty acids, pharma intermediates) at 5–50 mbar. Ultra-low ΔP (0.08–0.15 kPa/stage) minimizes reboiler temperature . • Solvent Recovery: High-purity ethanol, IPA, acetone recovery — copper or SS316L gauze prevents product discoloration. • Cryogenic Distillation: Air separation, LNG processing — aluminum or SS304 mesh with minimal ΔP. Figure 4: 500Y wire mesh discs stacked in a 0.8m ID vacuum distillation column with liquid collector & redistributor between sections. 6. Installation & Tower Internals Support Grid: Wire mesh discs sit directly on a camel hump support grid with 90–95% open area. Grid bars must be ≤ 10 mm wide to prevent channeling. Disc Stacking: Each disc is 50–200 mm high. Rotate adjacent discs 90° to prevent vapor bypass. Seal the outer rim with PTFE rope or custom-formed strip. Bed Limiter: Install a hold-down plate above the top disc for vacuum or high-F-factor service to prevent fluidization. Redistribution: Every 2–3 m of packed height requires a collector & redistributor to reset liquid distribution — wire mesh is especially sensitive to maldistribution. 7. Quick FAQ Q: What's the difference between wire mesh and perforated plate structured packing? A: Wire mesh (gauze) uses woven filaments and delivers HETP as low as 150 mm — ideal for precision/vacuum. Perforated plate uses stamped sheets, offers 2× flood capacity but HETP of 400–600 mm. See Section 4 above for the full comparison table. Q: Can wire mesh packing be cleaned in place (CIP)? A: Yes, but with caution. The fine gauze traps particulates more readily than plate packings. Use low-pressure (2–3 bar) spray balls and verify drainability. For polymer fouling, chemical soak (NaOH or solvent-based) is preferred over mechanical cleaning. Q: What is the lead time for custom sizes? A: Standard 250Y/500Y in SS304/316L ships in 10–15 days. Custom alloys (Hastelloy, Titanium) or non-standard corrugation angles (X-type) require 25–35 days. MOQ: 0.5 m³. Contact us with tower ID, bed height, and process conditions. Request a Quote for Wire Mesh Structured Packing Send your tower diameter, packed bed height, operating pressure (especially if vacuum), and fluid composition. We'll specify the optimal model (250Y/350Y/500Y/700Y), recommend material grade, and supply matched support grids, liquid distributors, and bed limiters for a complete tower package. Contact FXSINO: jackieqiu9202@gmail.com | +86 18507999558

  { "@context": "https://schema.org", "@type": "Product", "name": "304 & 316L Metal Pall Ring - Stainless Steel Random Packing", "description": "304 and 316L stainless steel metal Pall rings in sizes 16/25/38/50/76mm. Technical specifications, material selection guide, pricing factors per m³, MOQ, and lead time. For distillation, absorption, scrubbing, and corrosive service.", "brand": {"@type": "Brand", "name": "FXSINO"}, "sku": "FS-MPR-PRICE", "image": "/storage/uploads/images/202608/21/IMG_MPR_PRICE_HERO.jpg" } Figure 1: 304 (bright) and 316L (matte) stainless steel Pall rings — the two most specified grades for corrosive tower service. 304 & 316L Metal Pall Ring Price & Specs: 16–76mm for Distillation, Absorption & Scrubbing Buyer's Brief: Metal Pall rings deliver the best balance of mass transfer efficiency, mechanical strength, and cost among all random packings. 304 grades suit general non-chloride service; 316L is the default for chloride-containing, acidic, or pharmaceutical applications. Below: full specifications, material selection logic, and pricing factors per cubic meter — so you can budget accurately before requesting a formal quote. 1. What Are 304/316L Metal Pall Rings? Metal Pall rings are the workhorse of random tower packing — evolved from the Raschig ring by punching two rows of windows in the cylindrical wall and bending the resulting tabs inward . This creates internal wetting surfaces and open gas pathways, eliminating the severe channeling and high pressure drop of plain cylinders. Stamped from stainless steel strip (304 or 316L), they combine high mechanical strength (supporting deep beds up to 6 m without intermediate supports), temperature resistance to 450°C, and corrosion immunity in a wide range of aqueous and organic services . For a deeper technical dive, see our Stainless Steel Metal Pall Ring specification page. Figure 2: Punched windows and inward-bent fingers — the geometric features that give Pall rings 30–50% better mass transfer than Raschig rings. 2. Technical Specifications & Dimensions All dimensions in mm. Data applies to both 304 and 316L grades (wall thickness may vary slightly by manufacturer): Size D×H×T (mm) Surface Area (m²/m³) Void Fraction (%) Bulk Number (pcs/m³) Bulk Density (kg/m³) Typical ΔP (Pa/m) 16 × 16 × 0.3 330–360 96.0–96.5 214,000 360–380 400–550 25 × 25 × 0.5 210–220 94.5–95.5 51,900 310–340 250–400 38 × 38 × 0.6 140–146 95.0–96.0 13,800 280–310 180–300 50 × 50 × 0.8 105–109 94.5–95.5 6,500 240–270 120–200 76 × 76 × 1.0 70–74 95.0–96.0 1,830 220–250 80–150 Data compiled from industry standard stainless steel Pall ring datasheets. Bulk density shown for 304 grade; 316L is ~2% heavier. Custom sizes (10/13/89/100mm) and wall thicknesses on request. 3. 304 vs 316L: Material Selection & Price Premium Choosing between 304 and 316L is the single biggest price driver. The difference isn't just material cost — it's service life, downtime risk, and corrosion failure prevention. See our 304 vs 316L Structured Packing guide for full corrosion threshold data. Factor 304 Stainless Steel 316L Stainless Steel Cr / Ni / Mo 18% Cr / 8% Ni / 0% Mo 16% Cr / 10% Ni / 2–3% Mo PREN (Pitting Index) 18–20 24–26 Chloride Resistance ≤ 50 ppm (cold, neutral) ≤ 200 ppm (cold), ≤ 100 ppm (hot) Max Temperature 450°C (continuous) 450°C (continuous) Relative Price (per m³) Baseline ($1,200–1,800) +15–25% premium ($2,500–4,000) Best For Fresh water, organics, non-chloride acids, solvents Seawater, chlorinated solvents, HCl/Cl2 scrubbing, pharma Figure 3: 304 (bright, left) vs 316L (matte, right) — visual difference is subtle; corrosion performance is not. 4. Pricing Factors (What Drives Your Quote) Size & Wall Thickness: Smaller diameters (16/25mm) have higher fabrication cost per m³ due to more pieces and thinner strip handling. Thicker walls add material cost but improve crush resistance. Material Grade: 316L typically carries a 15–25% premium over 304 due to molybdenum content and lower production yield . Special alloys (Duplex 2205, Hastelloy C-276, Titanium) add 100–300%. Order Volume: Spot orders (< 5 m³) carry highest unit price. Contracts ≥ 50 m³ typically receive 15–25% volume discount . Surface Finish & Certification: Electropolishing, passivation (ASTM A967), and MTC to EN 10204 3.1 add 5–10%. NACE MR0175 compliance for sour service adds 10–15%. Packaging: Standard woven bags (25kg/bag) included. Steel drums, wooden pallets, or anti-static packaging for solvent service add $20–50/m³. Raw Material Index: Stainless steel strip prices fluctuate with LME nickel and chrome indices. Quotes are typically valid 15–30 days. 5. Primary Applications • Distillation: Hydrocarbon fractionation, solvent recovery, ethanol/water separation — 304 for non-corrosive feeds, 316L for acidic cuts . • Gas Scrubbing: CO2 and H2S removal with amine solutions (316L recommended due to trace chlorides in makeup water) . • Acid Gas Absorption: SO2, SO3, HCl, Cl2 scrubbing — 316L minimum; upgrade to Ti or PVDF for extreme chlorides . • Vacuum Distillation: Low pressure drop (0.3–0.8 kPa per stage) makes metal Pall rings suitable for heat-sensitive separations at 50–200 mbar . • Cross-Reference: For corrosive aqueous service below 100°C, compare with Plastic Pall Ring Packing (PP/CPVC/PVDF) — often 60–70% lower cost where temperature permits. Figure 4: 38mm 304 Pall rings loaded into a 1.2m ID distillation column on a camel hump support grid. 6. Installation & Tower Internals Support Grid: Use a camel hump support grid with opening ≤ 60% of ring diameter. Metal Pall rings are heavier than plastic (240–380 kg/m³) — verify grid load rating. Uniform Loading: Distribute evenly across tower cross-section. Maximum single-pour bed height: 4–6 m before intermediate collector & redistributor required. Bed Limiter: Install a hold-down plate for beds subject to high gas velocity (> 2.5 F-factor) or vacuum operation. Pre-Wetting: Always flood the bed before introducing vapor to prevent dry channeling. For 316L in chloride service, pre-passivate with nitric acid (20%, 60°C, 30 min) if specified. 7. Quick FAQ Q: How much does 316L cost more than 304 for the same size? A: Typically 15–25% premium, driven by molybdenum content (2–3%) and lower mill yield. For a 10 m³ order of 50mm rings, the difference is roughly $3,000–5,000 — often less than a single day of unplanned downtime from chloride stress cracking. Q: Can I mix 304 and 316L in the same tower? A: Not recommended. Galvanic coupling between grades in conductive aqueous service accelerates corrosion of the 304 sections. Use one grade throughout, or separate with a non-conductive barrier (e.g., ceramic ring layer). Q: What's your MOQ and typical lead time? A: MOQ is 1 m³ (mixed sizes accepted). Standard sizes (25/38/50mm in 304/316L) ship in 7–10 days. Custom sizes, special alloys, or passivation add 15–25 days. Contact us with your tower ID, bed height, and service conditions for a firm quote. Request a Formal Quote for Metal Pall Rings Send us your tower diameter, bed height, operating temperature, and process fluid composition (especially chloride concentration). We'll recommend 304 vs 316L, calculate exact m³ quantity, and issue a firm quote within 24 hours. FXSINO supplies stainless steel Pall rings in all standard sizes with MTC, dimensional reports, and matched support grids, liquid distributors, and bed limiters for complete tower packages. Contact FXSINO: jackieqiu9202@gmail.com | +86 18507999558

x'q { "@context": "https://schema.org", "@type": "Product", "name": "Structured Packing for Distillation Column - 250Y/350Y/500Y/700Y", "description": "Structured packing for distillation columns in SS304, SS316L, Duplex 2205, and Titanium. Models 250Y, 350Y, 500Y, 700Y with corrugated sheet and wire gauze designs. Low pressure drop, high HETP efficiency for vacuum and atmospheric distillation.", "brand": {"@type": "Brand", "name": "FXSINO"}, "sku": "FS-SP-DIST", "image": "/storage/uploads/images/202608/21/IMG_SP_DIST_HERO.jpg" } Figure 1: Structured packing elements (corrugated sheet metal) ready for distillation column installation. Structured Packing for Distillation: 250Y/500Y/700Y in SS304 & 316L, Low ΔP Engineering Brief: When your distillation column demands HETP below 400 mm and pressure drop under 0.2 kPa per theoretical stage, random packing hits its limit. Structured packing with corrugated sheets at 45° (Y-type) or 30° (X-type) delivers predictable mass transfer, uniform liquid distribution, and the lowest ΔP per stage of any tower internals — critical for vacuum distillation where every millibar of pressure loss costs separation efficiency. 1. What Is Structured Packing? Structured packing is a type of tower packing manufactured by arranging corrugated metal sheets, wire gauze, or perforated plates into a highly ordered, geometrically fixed structure . Unlike random packing (Pall rings, saddles), where each piece settles unpredictably, structured packing creates uniform, parallel flow channels that eliminate channeling and deliver consistent mass transfer across the entire tower cross-section . Each packing element is typically 100–300 mm in height, with corrugations running at a fixed angle to the vertical axis. Elements are stacked vertically in the column, with alternating layer orientations (usually 90° rotation between layers) to promote radial mixing of both vapor and liquid phases . Figure 2: Corrugated sheet structure with 45° Y-type angle — uniform flow channels eliminate channeling. 2. Corrugation Geometry: X-Type vs Y-Type The corrugation angle determines the trade-off between capacity and efficiency: Parameter X-Type (30°) Y-Type (45°) Corrugation Angle 30° from vertical 45° from vertical Gas Capacity Higher (less flow resistance) Moderate Mass Transfer Efficiency Moderate Higher (longer contact path) Pressure Drop Lower Moderate Best For High-throughput, low-pressure distillation High-purity separation, vacuum distillation Nomenclature: A "250Y" packing has 250 m²/m³ surface area with 45° corrugation. A "250X" uses 30° corrugation. Y-type is the industry default for distillation. 3. Technical Specifications: 250Y / 350Y / 500Y / 700Y The numeric prefix denotes specific surface area in m²/m³. Higher surface area = more mass transfer per meter but higher pressure drop and lower capacity: Model Surface Area (m²/m³) Void Fraction (%) Typical HETP (mm) ΔP (Pa/m) F-Factor Limit 250Y 250 97–98 350–500 150–250 2.8–3.2 350Y 350 95–96 300–400 200–350 2.4–2.8 500Y 500 93–94 200–300 300–500 2.0–2.4 700Y 700 90–92 150–250 500–800 1.5–2.0 Data compiled from industry standard specifications. HETP and ΔP vary with operating pressure, liquid load, and system physical properties. For wire gauze variants (e.g., 500Y-WG), HETP can be 20–30% lower. See our Metal Structured Packing 500Y/700Y deep dive for gauze-type details. 4. Material Selection for Distillation Service Distillation involves heat, pressure, and often corrosive feeds. Material selection follows the same chloride/sulfuric/temperature logic as other tower internals — see our 304 vs 316L Structured Packing guide for full corrosion thresholds: Material Max Temp Corrosion Resistance Typical Distillation Use SS304 450°C General (no chlorides) Hydrocarbon fractionation, solvents SS316L 450°C Chlorides ≤ 200 ppm Pharmaceutical, fine chemical, chlorinated solvents Duplex 2205 300°C Chlorides > 200 ppm, high strength Seawater stripping, high-stress towers Titanium (Gr2) 300°C Exceptional (chlorides, Cl2) Chlor-alkali, HCl, TiCl4 distillation Figure 3: Material selection — SS304 (bright), SS316L (matte), Duplex 2205, and Titanium for aggressive distillation. 5. Why Structured Packing for Distillation? Performance Advantages Over Random Packing Lower HETP: 150–400 mm vs. 500–800 mm for random packing — you need fewer theoretical stages for the same separation, reducing column height . Ultra-Low Pressure Drop: 0.1–0.5 kPa per theoretical stage vs. 0.5–1.5 kPa for trays — essential for vacuum distillation (e.g., edible oil deodorization at 3–5 mbar) . No Channeling: Ordered geometry forces uniform vapor-liquid contact across 100% of tower cross-section . Predictable Scale-Up: Performance data from 50 mm test columns scales directly to 5 m industrial towers — no random-packing scale-up uncertainty . High Turn-Down Ratio: Maintains efficiency down to 30–40% of design capacity, unlike trays which weep at low load. 6. Key Applications • Vacuum Distillation: Edible oil deodorization, vitamin E concentration, phthalic anhydride — where every mbar of ΔP reduces top product purity . • Atmospheric Distillation: Crude oil fractionation, solvent recovery, ethanol/water separation . • Fine Chemical & Pharmaceutical: Heat-sensitive intermediates requiring low residence time and precise temperature control . • Cryogenic Distillation: Air separation (O2/N2/Ar) where low ΔP and high efficiency are mandatory . • Absorbers & Strippers: CO2 capture, amine treating, sour water stripping (cross-over from random packing applications). Figure 4: Structured packing section installed in distillation column with liquid distributor at top. 7. Installation & Tower Internals Support Grid: Use a camel hump support grid rated for packed-bed load + hydraulic thrust. Grid opening ≤ 15 mm to retain packing elements. Leveling: Each packing element must sit level within ± 1°. Use a spirit level on the top edge of each element. Tilted packing causes maldistribution . Rotation: Alternate layers at 90° rotation. Mark each element with orientation arrows before lowering into the column. Liquid Distribution: Critical for structured packing — maldistribution compounds with each layer. Use a high-performance liquid distributor (target irrigation density ≥ 80 points/m²). Bed Limiter: Install a hold-down plate to prevent packing lift during pressure surges or vacuum operation. 8. Structured Packing vs Random Packing vs Trays Factor Structured Packing Random Packing Trays HETP 150–400 mm 500–800 mm 450–600 mm/tray ΔP per Stage 0.1–0.5 kPa 0.3–0.8 kPa 0.5–1.5 kPa Capacity (F-factor) 1.5–3.2 1.0–2.5 1.5–2.5 Turn-Down Ratio 30–40% 50% 70–80% Installation Cost High (precision required) Low (dump filling) High (tray assembly) Best For Vacuum, high-purity, low ΔP General absorption, corrosive service High-capacity, fouling service 9. Quick FAQ Q: What model should I choose for vacuum distillation at 10 mbar? A: For vacuum service below 50 mbar, 500Y or 700Y is recommended. The higher surface area compensates for low gas density, and the low ΔP per stage preserves top product purity. Wire gauze variants (500Y-WG) offer 20–30% better HETP if budget allows. Q: Can I retrofit an existing tray column with structured packing? A: Yes. Removing trays and installing structured packing typically increases capacity by 20–40% and reduces ΔP by 50–70%. You'll need to install a new support grid, liquid distributor, and bed limiter. Contact us for a retrofit feasibility assessment. Q: How do I prevent maldistribution in structured packing? A: Use a high-quality liquid distributor with ≥ 80 irrigation points per m² and uniform flow distribution (± 5%). For beds taller than 4–6 m, install collectors and redistributors at intermediate heights. Level each packing element to ± 1°. Specify Structured Packing for Your Distillation Column FXSINO manufactures corrugated sheet and wire gauze structured packing in all standard models (250Y/350Y/500Y/700Y) and materials (SS304, SS316L, Duplex 2205, Titanium, Hastelloy). Every element is laser-cut and CNC-folded for dimensional accuracy. We supply complete tower packages including support grids, liquid distributors, and bed limiters. Send us your column ID, operating pressure, and separation specs for a tailored recommendation. Contact FXSINO: jackieqiu9202@gmail.com | +86 18507999558