Import 5um Micro 316l Stainless Steel Sparger — Buy in wholesale FOB from Supplier in China

The 5um micro 316L stainless steel sparger from Baoji Yinggao Metal Materials Co., Ltd. is a sintered porous metal device manufactured from 316L stainless steel powder through sieving, molding, and sintering processes. The unit measures 25 mm diameter by 30.4 mm length with a controlled 5-micron pore size, enabling precise bubble generation for gas-liquid contact applications. This pore rating is critical for bioprocessing environments where fine bubble dispersion directly impacts mass transfer efficiency and cell viability.

316L austenitic stainless steel was selected for its molybdenum-enhanced corrosion resistance, particularly against chloride-induced pitting in pharmaceutical and marine environments. The sintered powder metallurgy construction yields isotropic porosity with tortuous flow paths, a standard characteristic of self-supporting porous metal media. Typical industry tolerances for such spargers range within plus or minus 0.5 mm on diameter and plus or minus 1.0 mm on length, though buyers should verify exact dimensional tolerances with the supplier. The material grade conforms to standard 316L composition limits (16-18% chromium, 10-14% nickel, 2-3% molybdenum, maximum 0.03% carbon), with full certification to be confirmed directly.

Primary buyers include fermenter OEMs, biotechnology scale-up facilities, and wastewater aeration system integrators. The sparger suits batch and continuous processes requiring oxygen transfer coefficients above 200 per hour, typical for aerobic fermentation at 50-500 litre scale. Compatible gases span oxygen, nitrogen, carbon dioxide, and filtered compressed air. Buyers should confirm with Baoji Yinggao whether surface finish, electropolishing, or additional passivation is offered, as these treatments affect cleanability and bioburden control in regulated industries.

Baoji Yinggao Metal Materials Co., Ltd. operates from 1502, Unit 1, No.A, Building 12, Chuangyi Building, North 195 High-Tech Road, High-Tech Development Zone, Baoji, Shaanxi 721013, China. The location in Baoji, a city with established titanium and refractory metal industries, positions the firm within a regional supply chain for powder metallurgy and specialty metal fabrication. The supplier is classified at harbour trust tier, which indicates a baseline verification status without premium assurance credentials.

The listing provides no response rate data (recorded at 0.00 percent with zero average response hours), meaning prospective buyers should test communication channels directly before relying on quoted timelines. The company profile does not disclose factory size, annual output, ISO certification status, or client references. Buyers are advised to request a current quality management system certificate, previous batch test reports for bubble point and permeability, and photographic or video evidence of production equipment when evaluating this supplier.