Sintered stainless steel powder filter elements are manufactured by uniaxially pressing fine spherical 304 or 316L powder into a cylindrical form, then sintering at high temperature in an inert atmosphere — no binders, no adhesives, no extrusion. The result is a rigid, self-supporting three-dimensional pore network with uniform pore size from 0.22 μm to 100 μm.

Unlike surface filters (pleated paper, woven mesh), particles are captured throughout the full wall thickness, giving these elements 5–10× the dirt-holding capacity of comparable pleated cartridges. The multi-layer gradient structure — coarse pores outside, fine pores inside — intercepts contaminants layer by layer and dramatically extends cleaning intervals.

They excel precisely where ordinary filter paper or filter cloth fails: high-viscosity liquids, high-temperature fluids, corrosive media, and processes requiring zero secondary contamination. These elements can be cleaned with gas-liquid bidirectional backflushing combined with ultrasonic treatment, and reused more than 50 times — with a lifecycle cost up to 73% lower than disposable cartridges.

The overall weld-free tube length reaches up to 1,200 mm. Products are formed in one piece without cutting, delivering high raw-material utilization and consistent geometry suitable for welding, bonding, and machining.

• ✓High temperature resistance — −200°C to 600°C
• ✓Precise, stable pore size (0.22–100 μm)
• ✓High porosity, low initial resistance, good permeability
• ✓High mechanical strength — no external skeleton required
• ✓Zero particle shedding — no secondary contamination
• ✓Excellent corrosion resistance (pH 1–14)
• ✓Reusable 50+ times via back-flush & ultrasonic cleaning
• ✓100% recyclable — 80% reduction in cleaning waste

Extreme Environmental Adaptability

Operates stably across −200°C to 650°C, from LNG cryogenic service to high-temperature gas treatment. Withstands 100,000 pulse back-flush cycles without degradation.

• ·LNG filtration at −162°C — no embrittlement
• ·Waste incineration gas at >600°C
• ·Corrosive acids and alkalis, pH 1–14
• ·Stable in liquid nitrogen, steam, CO₂

Regenerative Economic Advantage

Gas-liquid bidirectional back-flushing combined with ultrasonic cleaning enables 50+ reuse cycles. Petrochemical testing showed lifecycle cost 73% lower than disposable elements.

• ·Service life 3–5× longer than traditional media
• ·Supports SIP / CIP sterilization
• ·Back-flush restores >95% of initial flow
• ·Reduced downtime and replacement logistics

Green and Contamination-Free

100% recyclable stainless steel construction. Zero fiber shedding eliminates secondary contamination risk — critical in biopharmaceutical, semiconductor, and food-grade applications.

• ·100% recyclable raw material
• ·80% reduction in cleaning waste vs. disposable
• ·No particle migration into process fluid
• ·No adhesives or binders to leach