| Model | WCB-50S | WCB-75S | WCB-100S |
| Inlet | 3/4'' | 1'' | 1.2'' |
| Outlet | 3/4'' | 1'' | 1.2'' |
| Max Flow | 50L/min | 75L/min | 100L/min |
| Motor | 550W | 750W | 1100W |
| Connect | NPT/BSPF thread | ||
| Power | AC220V/380V 50HZ | ||
| Speed | 2800/1450 rpm | ||
| Pump Material | SS304 | ||
| Net Weight | 14kg/pc | 15kg/pc | 20kg/pc |
| Dimension | 41*20.5*23cm 1pc/carton | 46.5*21*24cm 1pc/carton | 50*21*25cm 1pc/carton |
For cooking oil, plant oil, chemical liquid, Hot oil
high hardness gear
corrosion protection pump body
high temperature resistance
Viton seal
WCB Stainless Steel: Comprehensive Technical Guide
WCB Stainless Steel combines the mechanical strength of cast steel (WCB) with the corrosion resistance of stainless steel, making it a versatile material for industrial valves, pumps, piping, and other equipment operating under demanding conditions. Designed for high-pressure, high-temperature, and corrosive environments, WCB stainless steel ensures long service life, reliable performance, and compliance with international standards such as ASTM and ISO.
This guide covers technical specifications, product highlights, storage conditions, and fault repair procedures, providing engineers, procurement specialists, and maintenance teams with detailed knowledge for proper selection and use.
Excellent mechanical properties suitable for high-pressure applications.
Resistance to wear, impact, and deformation under load.
Ideal for critical components in industrial systems.
Stainless steel surface resists oxidation and chemical attack.
Suitable for water treatment, chemical, petrochemical, and marine applications.
Maintains structural integrity in acidic, alkaline, and saline environments.
Operates effectively under temperatures up to 600°C (depending on grade).
Retains mechanical properties under thermal cycling and high-pressure steam.
Used in valves, pumps, flanges, fittings, and pressure vessels.
Compatible with a wide range of fluids, including water, oils, acids, and alkaline solutions.
Customizable for casting, machining, or forging applications.

| Property | Specification |
|---|---|
| Material grade | WCB (ASTM A216) + Stainless steel overlay/Alloy |
| Tensile strength | 485–620 MPa |
| Yield strength | 250–400 MPa |
| Hardness | 150–220 HB |
| Elongation | 18–25% |
| Impact toughness | ≥27 J at room temperature |
| Operating temperature | -29°C to 600°C (depending on grade) |
| Corrosion resistance | Excellent against oxidizing and reducing agents |
| Surface finish | Smooth, polished, or machined |
Notes: Properties may vary depending on stainless steel grade (e.g., 304, 316) and casting/forging methods.
Proper storage ensures the longevity and performance of WCB stainless steel components before installation:
Store in a dry, ventilated warehouse to prevent moisture accumulation.
Avoid exposure to corrosive chemicals or salt-laden air.
Maintain stable temperature conditions to reduce thermal stress.
Use lifting equipment to avoid mechanical damage.
Avoid dropping, scratching, or impacting surfaces.
Store horizontally on wooden or rubber supports to prevent bending or warping.
Apply anti-corrosion coating or oil if storage exceeds 3 months.
Cover with dust-proof and moisture-proof materials.
Inspect regularly for signs of rust, corrosion, or surface defects.
WCB stainless steel components are durable, but occasional faults or wear may occur. Proper repair and maintenance prolong service life.
| Fault Type | Possible Cause | Recommended Action |
|---|---|---|
| Surface corrosion | Improper storage, chemical exposure | Clean, polish, apply protective coating |
| Cracks or fractures | Mechanical overload, thermal stress | Inspect, replace affected parts, verify design load |
| Wear or erosion | Fluid abrasives, high velocity | Machine or weld overlay repair, reduce fluid speed |
| Leakage in valves/pumps | Gasket or seal failure | Replace gaskets, inspect mating surfaces, ensure proper torque |
| Discoloration | Oxidation or chemical reaction | Surface cleaning, passivation treatment |
Conduct regular inspections for surface integrity and signs of corrosion.
Keep mechanical joints, flanges, and threaded connections clean and lubricated.
Apply passivation or anti-corrosion treatments periodically.
Monitor operating temperatures and pressures to avoid overstressing components.
Welding and overlaying: For minor cracks or worn surfaces, use compatible stainless steel filler material.
Machining: Restore dimensional tolerances for flanges, valve seats, and pump components.
Surface treatments: Polishing, passivation, or coating to restore corrosion resistance.
WCB stainless steel is widely used across industrial, chemical, and water treatment sectors:
Industrial Valves and Pumps
Gate, globe, check, and ball valves.
Pump casings and impellers for high-pressure water and chemical circulation.
Chemical and Petrochemical Plants
Pipes, flanges, and fittings resistant to acids, alkalis, and solvents.
Components for high-temperature steam and chemical transfer systems.
Water Treatment Facilities
Corrosion-resistant pipelines for potable and industrial water.
Components for desalination, filtration, and circulation systems.
Marine and Offshore Applications
Resistant to saltwater corrosion.
Pressure vessels, flanges, and piping for offshore platforms.
Power and Energy Industry
High-pressure steam pipelines.
Heat exchangers and cooling systems.
High mechanical strength: Withstands high-pressure, high-temperature applications.
Excellent corrosion resistance: Performs in chemical, marine, and industrial environments.
Durable and long-lasting: Reduces maintenance costs and replacement frequency.
Versatile: Suitable for valves, pumps, piping, flanges, and custom equipment.
Compliance: Meets ASTM, ISO, and other international standards for quality and safety.
WCB Stainless Steel is a high-strength, corrosion-resistant material used in valves, pumps, piping, and industrial equipment. Combining the durability of cast steel (WCB) with stainless steel’s chemical resistance, it delivers reliable performance in high-pressure, high-temperature, and corrosive environments. Ideal for chemical, petrochemical, water treatment, and marine applications, WCB Stainless Steel ensures long service life, minimal maintenance, and compliance with international standards.
WCB Stainless Steel provides a robust, corrosion-resistant, and high-performance solution for critical industrial, chemical, and water treatment systems. By following proper storage, maintenance, and repair procedures, operators can ensure long-term durability and reliable operation.
This guide equips engineers, maintenance teams, and procurement professionals with the technical specifications, product highlights, storage conditions, and fault repair protocols necessary to maximize the performance and lifespan of WCB stainless steel components in demanding industrial environments.


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