Import Best Sell Astm Welded Stainless Steel Air Filter — Buy in Bulk from Supplier in China

Jiangsu Longyang Metal Technology Co., Ltd. manufactures ASTM welded stainless steel air filters for industrial ventilation and process air systems. The construction uses 304, 316, and 904L stainless steel grades, welded rather than clamped or bolted, to eliminate bypass leakage at joints. These materials resist oxidation and chloride corrosion in chemically aggressive or high-humidity environments. The supplier states compliance with ASTM standards, though the specific ASTM designation is not listed, so buyers should request the exact standard referenced.

Welded stainless steel filter housings and elements typically withstand differential pressures and temperature cycles that would compromise stamped or folded seams. Grade 304 suits general industrial HVAC; 316 adds molybdenum for coastal or mildly corrosive atmospheres; 904L offers superior resistance to sulfuric and phosphoric acid vapours in chemical processing. The welded joint integrity matters because even microscopic gaps create turbulent zones where particulate can bypass the filter media. Standard industry practice subjects welded seams to dye-penetrant or helium leak testing, though the supplier does not confirm which test protocol they apply.

Primary applications include pharmaceutical cleanrooms, food processing exhaust and supply air, and chemical plant ventilation where particulate control intersects with corrosion resistance. Buyers in these sectors typically require documentation of material certificates, weld maps, and pressure test records. The listing mentions ISO and SGS certification without specifying certificate numbers or scopes, so verification is essential. Packaging and shipping options include FOB and CIF terms to Chinese ports, with flexibility on minimum order quantities that the buyer must confirm directly with Jiangsu Longyang.

Jiangsu Longyang Metal Technology Co., Ltd. is located at 28 Longyun Road, Zhouzhuang Town, Wuxi, Jiangyin, Jiangsu Province, China. The company operates as an imported-tier supplier within the platform harbour trust tier. Both the response rate and average response hours are recorded at zero, which indicates no response data is available rather than active non-response. Buyers should therefore initiate contact through multiple channels and allow extra time for reply.

The supplier focuses on metal technology products with air filtration as an application segment. Their stated address places them within the Wuxi-Jiangyin industrial corridor, a region with established stainless steel processing and fabrication infrastructure. No verified factory audit, capital registration, or employee count is stated in the listing. Buyers should request a current business licence, ISO certificate scope, and recent SGS report numbers before placing trial orders. The mention of flexible MOQ suggests willingness to negotiate on volume, but exact figures require direct confirmation.