Bulk Corrosion Resistant Flexible Metal Hoses Successfully Deployed in Vietnam Wastewater Treatment Plant Project
Project Background: Equipment installation engineering for a large-scale industrial park Wastewater Treatment Plant in Vietnam.
Product Name: Stainless Steel Flexible Metal Hose with Flange Ends.
Purchase Volume: Multi-specification, customized bulk procurement.
1. On-Site Condition: Severe Chemical Corrosion & Multi-Angle Dynamic Flexibility in Aeration Tanks
High-Concentration Medium Corrosion: Industrial sewage contains aggressive chemical agents, acids, alkalis, and high concentrations of hydrogen sulfide (H₂S) gas. Traditional non-metallic hoses or standard rubber joints degrade, harden, and crack rapidly under intense UV exposure and chemical attacks.
Dynamic Stress from Oscillations: The liquid within the aeration tank undergoes violent churning and agitation. The connection piping must sag at a specific arc (U-shape), bearing internal medium pressure while enduring multi-directional, high-frequency micro-oscillations from continuous water flow impacts.
The Client's Need: A Corrosion-Resistant Industrial Metal Hose combining superior flexibility, zero permeability, and extreme chemical resistance for harsh industrial applications.
2. Engineering Solution: Customized Corrugated Metal Hose Technical Selection
Our technical engineers conducted multiple rounds of drawing alignments with the Vietnamese site team. We bypassed short-lived traditional rubber joints, selecting a customized Stainless Steel Braided Hose solution instead.
Ⅰ.316L Convoluted Core
Excellent Pitting Resistance: Inner lining constructed from high-grade 316L Stainless Steel material.
Chloride Ion Blocker:Effectively repels pitting and crevice corrosion triggered by high chloride concentrations in industrial sewage.
Free-Flex Annular Convolutions: Delivers an outstanding bending radius while seamlessly absorbing multi-directional displacements from water turbulence.
Ⅱ. High-Strength Stainless Steel Wire Braid Layer
Mchanical Anti-Abrasion: Outer layer tightly braided with 304 Stainless Steel Wire to block damage from external debris.
Axal Elongation Restraint: Locks axial extension under pressure, serving as the core pressure containment layer to lift tensile strength and overall pressure ratings.
Ⅲ. ASME Standard Welding & Rigorous Testing
High-Standard Welding: Flange-to-hose end connections strictly execute professional ASME Certified Welding standards.
Mandatory Dual Inspection: 100% passes the Air Leakage Test and hydrostatic pressure test before dispatch, guaranteeing zero failures during prolonged submerged service.
3. Field Performance
Following months of continuous on-site grid operation, this batch of metal hoses exhibits zero localized leakage, zero structural deformation, and zero surface rust.
On-site scene: Operating status of stainless steel flexible metal hoses in the aeration tank of an industrial wastewater treatment plant in Vietnam:
If your pipeline infrastructure projects require high-performance Flexible Pump Connectors or customized industrial hoses, please let us know your specific pressure ratings (e.g., PN16/ANSI 150LB) or nominal diameters (DN) so we can optimize your technical configuration.
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