FLYGT High Precision Cast Alloy Steel Pump Spacer Ring Parts

We have built our own brand to deliver integrated technical solutions across fluid machinery and engineering sectors. Our offerings span industrial control and drive equipment, mechanical seals, and overseas field engineering services.

Through our suite of proprietary technologies and product lines, we provide clients with high-level technical consultation, sales backing, and complementary product solutions — covering pumps, frequency converters, servo drives, PLC-HMI, industrial control cabinets, motors, mechanical seals and systems, couplings, gearboxes, and turnkey engineering services (including overseas on-site 3D scanning reverse molding of pump replacement parts and equipment debugging performed by our dispatched engineers abroad).

• Reverse-Engineered Precision — FARO 3D laser scanning captures OEM geometry with ±0.05mm accuracy; no original drawings required
• Duplex Stainless Steel Standard — Superior chloride corrosion resistance for wastewater and saline media environments
• CNC-Machined Interchangeability — Guaranteed direct fit with FLYGT original pump assemblies upon installation
• Full Traceability — Material certificates and inspection documentation provided with every shipment
• Dimensional Verification — 100% inspection against CAD model tolerances using 3D coordinate measuring
• Proven Reliability — Supplied to municipal and industrial wastewater facilities across 15+ countries

Both investment casting and sand casting lines are operated to match ring size, material, and cost requirements:

All castings are heat-treated to relieve casting stress and achieve specified mechanical properties. Casting method is selected based on ring dimensions, material grade, and order quantity.

Precision CNC machining ensures dimensional accuracy of bore, outside diameter, and face surfaces:

• CNC Machining — Primary turning and boring of bore diameter and outer diameter
• Auto Lathe & Meter Lathe — High-efficiency rough and finish turning of cylindrical surfaces
• Wire Cutting (EDM) — Precision cutting of keyways, slots, and complex profiles
• Grinding — Critical seating and mating surfaces to Ra <1.6µm
• Milling & Drilling — Bolt holes, dowel pin holes, and secondary features

All machining operations are performed to CAD model tolerances with in-process inspection at critical stages.

Surface treatment extends ring service life by improving corrosion and wear resistance:

• Blacking (Oxide Coating) — Cast iron and carbon steel; mild rust prevention
• Polishing — Stainless steel; smooth surface, easier cleaning
• Anodizing — Aluminum rings; enhanced surface hardness
• Chrome Plating — Wear-prone surfaces; increased hardness
• Zinc Plating — Carbon steel; sacrificial corrosion protection
• Nickel Plating — Chemical-resistant coating for aggressive media
• Custom Coating — Epoxy, PTFE, or ceramic coating available upon request (in cooperation with Chinese Academy of Sciences special coating technology)

Every spacer ring undergoes comprehensive quality inspection throughout the manufacturing process:

1. Material Certificate — Full traceability for all raw materials against ASTM, DIN, EN, ISO, TOCT standards
2. Hardness & Roughness Testing — Verifies material hardness and seating surface finish quality
3. Dimensional Inspection — 3D coordinate measuring against CAD model tolerances; bore diameter, OD, face flatness, thickness
4. Non-Destructive Testing — PT (Penetrant), RT (Radiographic), UT (Ultrasonic), MT (Magnetic) for cast and machined rings
5. Hydrostatic Pressure Testing — Pressurized test to confirm structural integrity under pump operating pressure
6. Surface Finish Verification — Roughness tester measurement of mating and seating surfaces

Certifications: ISO9001:2015, ISO14001:2004, API Specification Q1.