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Chemical pump body
Keywords:
Chemical pump body
- Details
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■ Processing Materials
Stainless steel, carbon steel, low alloy steel, medium alloy steel, copper alloy, aluminum alloy, nickel-based alloy, cobalt-based alloy, etc.
Expertise in manufacturing products with complex structures: equipped with advanced casting simulation software to assist in process and product design.
■ Machining Accuracy
Linear dimensions: GB/T 1800.1-2009 standard grade 5-7; Geometric dimensions: GB/T 1800.1-2009 standard grade 6-8.
■ Machining Equipment
30 vertical and horizontal CNC lathes
30 vertical and horizontal machining centers
3 turn-mill compound machines
3 four-axis and five-axis machining centers
Wire-cutting machines, grinding machines, dynamic balancing machines, broaching machines, CNC milling machines, drilling machines, and more.
■ Enterprise Qualification
Geluobao possesses a highly skilled and experienced R&D team. We continuously explore and apply advanced casting techniques to ensure the high performance and reliability of our products. The company has introduced advanced production equipment and testing instruments, and has established a comprehensive quality management system. Every step, from raw material procurement to product delivery, is subject to strict quality control, ensuring that our products meet international standards and cater to our customers’ specific requirements.
■ Our Products
The company specializes in the research and development, production, and sales of a wide range of high-quality pump bodies and Roots blower components. Its main products include double-suction pump bodies, multistage pump bodies, mixed-flow pump bodies, vacuum pump bodies, Roots blower accessories, chemical pump bodies, as well as impellers. These products are widely used in industries such as chemical engineering, petroleum, pharmaceuticals, electric power, environmental protection, and metallurgy, providing reliable fluid transfer solutions for numerous enterprises worldwide.
■ Our Clients
Over the years, Geluobao Precision Casting (Zibo) Co., Ltd. has established long-term and stable cooperative relationships with numerous well-known enterprises at home and abroad, thanks to our superior products, reasonable prices, and comprehensive after-sales service. With integrity as our foundation and innovation as our driving force, we are committed to providing our customers with better products and services, contributing to the sustainable development of the global industrial sector.
Chemical Pump Body – Stainless Steel & Duplex Investment Casting
As a specialized chemical pump body casting manufacturer, Zibo Geluobao Precision Casting Co., Ltd. delivers corrosion-resistant pump housings and casings for the chemical processing, petrochemical, pharmaceutical, and industrial fluid handling industries. Our investment casting and lost foam processes produce pump bodies in stainless steel, duplex (2205/2507), 316L, and high alloy grades — engineered for aggressive chemical media including acids, alkalis, chlorides, and hydrocarbons.
Chemical Pump Body Materials & Chemical Compatibility
| Material Grade | Type | Suitable For | Key Properties |
|---|---|---|---|
| CF8M / 316 / 316L | Austenitic Stainless | Mild acids, organic chemicals, water treatment, general chemical service | Molybdenum-enhanced pitting resistance; widely compatible; cost-effective baseline grade |
| 2205 / UNS S32205 | Duplex Stainless | Chloride environments, seawater cooling pumps, acid mixtures with chlorides | 2x yield strength vs 304; excellent chloride SCC resistance |
| 2507 / Super Duplex | Super Duplex Stainless | Aggressive H2SO4, HCl service, offshore desalination, hot chloride solutions | PREN >40; extreme pitting/crevice corrosion resistance |
| CN7M / 904L equiv. | High Alloy Austenitic | Sulfuric acid, phosphoric acid, concentrated acidic process streams | Nickel-molybdenum enhanced for reducing acid resistance |
| Hastelloy C276 equiv. | Nickel-Based Alloy | Hot hydrochloric acid, wet chlorine, mixed oxidizing/reducing acids | Ultimate corrosion resistance for severe service |
| CA6NM / 13Cr-4Ni | Martensitic Stainless | Abrasive chemical slurries, mild corrosive wear service | Hardness + moderate corrosion resistance combination |
Chemical Pump Types We Cast Bodies For
Centrifugal Process Pumps
ANSI B73.1 / ISO 2858 / ISO 5199 compliant end-suction centrifugal pump bodies. Single-stage, single-suction design with integrated flanges and mounting pads. Available in CF8M, duplex, and super duplex for standard to aggressive chemical duty.
- End-Suction Process Pump Body – ANSI/ISO standard dimensions, back-pull-out design compatible
- Vertical Inline Pump Body – Space-saving vertical configuration for chemical circulation loops
- Non-Metallic Lined Alternative?
Chemical Transfer Pumps
Pump bodies for tank-to-tank chemical transfer, drum unloading, and dosing applications. Compact designs in 316 and 316L for routine transfer of solvents, coolants, and mild chemical solutions.
Acid Handling Pumps
Specialized acid-resistant pump bodies cast in super duplex (2507) or nickel-based alloys for sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, and mixed-acid process streams. Full material traceability with EN 10204 3.1 certificates.
API Process Pumps (Oil & Gas Chemical)
API 610 compliant pump casings for refinery, petrochemical, and upstream chemical processing service. High-pressure-rated designs in carbon steel/stainless clad or solid duplex construction.
Design Features of Our Chemical Pump Castings
| Feature | Benefit to You |
|---|---|
| Integrated Flanges & Mounting Pads | One-piece casting eliminates welding joints — fewer potential leak points in chemical service |
| Smooth Internal Flow Passages | Investment casting achieves near-net-shape internal surfaces → reduced turbulence, better hydraulic efficiency |
| Thick-Wall Sections at Wear Zones | Reinforced volute tongue and cutwater areas resist erosion from abrasive/corrosive flow |
| Lost Foam Option (No Tooling) | Complex internal geometries achievable without expensive pattern tooling — ideal for prototypes and custom designs |
| ISO 2858 / ANSI Dimensional Compliance | Drop-in replacement compatibility with major pump brands (Goulds, Flowserve, Sulzer, etc.) |
| Full Material Traceability | Heat number tracking, mill test reports, NDT records per shipment — critical for chemical plant documentation |
Investment Casting vs Sand Casting for Chemical Pump Bodies
Why Investment Casting Wins for Chemical Service:
- Better surface finish (Ra 3.2–6.3μm) → less fouling, easier cleaning between batches
- Tighter tolerances (CT4-CT6) → less machining on sealing surfaces → lower total cost
- No sand inclusion defects → zero risk of sand contamination in chemical process fluids
- Superior microstructure → finer grain from controlled solidification → more uniform corrosion resistance
Quality Control for Every Chemical Pump Body
- Chemical Composition Analysis – Optical emission spectrometer verification against material specification
- Mechanical Property Testing – Tensile, yield, elongation, hardness testing per ASTM A351/A743/A995
- Dimensional Inspection – CMM or fixture gauging of critical mating surfaces, flange bolt patterns, and bore diameters
- Pressure Test Ready – Castings finished to allow customer-side hydrostatic pressure testing per API 610 / ASME standards
- NDT as Required – Ultrasonic (UT) for thick sections; Dye penetrant (PT) or Magnetic particle (MT) for surface defect detection
- Documentation Package – EN 10204 3.1 inspection certificate with full heat number traceability included with every order
Typical Applications
Our chemical pump body castings are used across these industries:
🧪 Chemical Processing Plants – Acid/alkali circulation, reactor feed, distillation column reflux | 🛢️ Petrochemical Refineries – Hydrocarbon processing, caustic injection, sour water handling | 💊 Pharmaceutical Manufacturing – Solvent transfer, clean-in-place systems, sterile process pumps | 🍺 Food & Beverage – CIP cleaning systems, sanitary pump bodies in 316L | ♻️ Waste Water Treatment – Chemical dosing, pH control pumping | ⚡ Power Generation – Boiler chemical feed, condensate polishing | 🌊 Desalination Plants – Seawater intake, brine recirculation (duplex/super duplex)
Custom Chemical Pump Body Development
Have a non-standard design? Our engineering team supports custom development:
- Drawing review – manufacturability feedback before you commit
- Material selection guidance – match the right alloy to your actual process chemistry (temperature, concentration, presence of chlorides/oxygen)
- Rapid prototyping – first article in 2–4 weeks via lost foam process, no tooling required
- We can help if you share your process conditions (fluid type, temperature range, concentration %, any solids content) — we'll recommend the most cost-effective material that handles the job safely.
Ready to Discuss Your Requirements?
Send your drawing or specification to sales@globalmetalcasting.com. We typically respond within 24–48 hours with:
- Material recommendation based on your application
- Quotation (FOB or EXW Shandong)
- Lead time estimate (standard: 4–6 weeks; rush: 2–3 weeks available for urgent projects)
Zibo Geluobao Precision Casting Co., Ltd.
ISO 9001 Certified | 5-Ton Melting Capacity | Max Single Piece: 3 Tons
Email: sales@globalmetalcasting.com | WhatsApp: +86-19577716682 | Web: globalmetalcasting.com
More Products
Investment Casting Parts
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Investment casting
This process involves: fabricating a meltable wax model using a CNC machine or 3D printing → coating the wax model with multiple layers of silicon sol and zircon sand to form a ceramic shell → steam dewaxing to form a cavity → casting molten alloys (such as stainless steel, titanium alloy or superalloys) → breaking the shell to remove the finished part.
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Lost foam casting
Lost foam casting is an advanced casting technology that uses a foam pattern as the main mold. Its core principle is to replace the traditional mold with a foam pattern; during pouring, the high-temperature molten metal vaporizes the foam and fills the cavity.
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Sand casting
Sand casting is one of the most traditional metal forming processes, using quartz sand or special sand combined with clay or resin binders to make molds. Metal parts can be produced by gravity or pressure casting.
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Resin sand casting
Resin sand casting: Uses resin as a binder, mixed with sand to form a mold. Resin sand casting has low mold costs and is suitable for large and complex castings, generally used for machine tools, lathes, large machinery bases, etc.
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Multistage Pump Body
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Multistage pump bodies
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Roots blower pump body
The company specializes in the research and development, production, and sales of a wide range of high-quality pump bodies and Roots blower components.
Double-Suction Pump Body
Mixed-Flow Pump Body
Vacuum Pump Body
Chemical Pump Body
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Multi-stage pump guide vanes
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Impeller
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Impeller (Paper machinery industry)
Stainless steel, carbon steel, low alloy steel, medium alloy steel, copper alloy, aluminum alloy, nickel-based alloy, cobalt-based alloy, etc.
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Impeller
Stainless steel, carbon steel, low alloy steel, medium alloy steel, copper alloy, aluminum alloy, nickel-based alloy, cobalt-based alloy, etc.
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Stainless steel casting 2BV pump Impeller
2BV series impeller
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Stainless steel Double Suction Centrifugal Pump Impeller
What Is a Double Suction Centrifugal Pump Impeller?A double suction centrifugal pump impeller is the rotating heart of a horizontal split-case centrifugal pump where fluid enters both sides of the impeller eye simultaneously. This symmetrical dual-inlet design inherently balances axial thrust — the hydraulic force that pushes the impeller shaft toward one side — eliminating or drastically reducing the need for thrust bearings and allowing larger flow capacities with higher efficiency than equivalent single-suction designs.Double suction impellers are standard equipment in municipal water supply systems, irrigation pumping stations, HVAC cooling towers, fire protection networks, and industrial process water loops where high volume, low-to-medium head, and continuous reliable operation are required.Zibo Geluobao produces double suction impellers through investment casting in stainless steel and duplex alloys — delivering corrosion resistance, precision blade geometry, and surface finish quality that sand casting cannot match.Design Characteristics of Double Suction ImpellersCritical Design FeaturesSymmetrical dual-volute inlet — Two mirror-image blade sets sharing a common back shroud; fluid enters both eyes axially and exits radiallyEnclosed (shrouded) design — Front and back shrouds fully enclose the vanes for maximum hydraulic efficiencyWhy Investment Casting?Blade profile accuracy ±0.15–0.30 mm — Ceramic shell captures complex curved vane geometry that sand molds distortRa 3.2–6.3 μm as-cast blade surfaces — Reduces hydraulic skin friction; no need for expensive blade polishingNo sand inclusions at blade roots — The #1 failure point in sand-cast impellers (stress concentration + corrosion initiation) is eliminatedPiece-to-piece consistency — Every impeller in a batch matches within ±0.05 mm; dynamic balancing is predictable and fastMaterial flexibility — Same tooling produces CF8M, Duplex 2205, Super Duplex 2507 — just change melt compositionAvailable MaterialsGradeStandardBest ApplicationKey PropertyCF8M / 316SSASTM A351 J92900Municipal water, irrigation, cooling tower circulation, general freshwater serviceMolybdenum-enhanced chloride resistance up to ~200 ppm Cl⁻CF3M / 316LASTM A351 J92800Chemical process pumps handling dilute acids/alkalis; welded assembliesLow carbon (<0.03%) prevents sensitization during weldingDuplex 2205 (S32205)ASTM A995Brackish water, seawater intake, cooling towers with chlorides >500 ppmPREN 34–36; SCC resistant; 2× yield strength of 316Super Duplex 2507 (S32750)ASTM A995Offshore platforms, desalination plants, aggressive seawater with H₂S tracesPREN ≥40; extreme pitting/crevice corrosion resistanceCD4MCuNASTM A995 J93372Sulfuric/phosphoric acid transfer pumps, fertilizer industryCopper-alloyed duplex for reducing acid environments17-4PH (S17400)ASTM A747High-head pumps requiring HRC 35–40 hub strength + corrosion resistancePrecipitation hardenable to 1380 MPa UTSInvestment Casting vs Sand Casting — Direct ComparisonAttributeInvestment Casting (Ours)Sand Casting (Traditional)Vane Profile Tolerance±0.15–0.30 mm — ceramic shell holds shape precisely±0.8–2.0 mm — sand shift during pour causes distortionBlade Surface RoughnessRa 3.2–6.3 μm as-cast (usable without machining)Ra 25–100 μm (requires grinding/polishing)Batch ConsistencyVariance <0.05 mm between piecesVariance 0.3–1.0 mm; each piece needs individual trim/balance adjustmentSand Inclusion / PorosityZero (ceramic shell process)Common defect, especially at thin vane root fillets — major fatigue/corrosion initiation siteFirst Article Lead Time2–3 weeks from drawing approval6–10 weeks (pattern plate + core boxes + trial runs)Tooling Cost (New Design)$200–$500 (wax injection die)$3,000–$10,000 (aluminum pattern + core boxes)Min Order Quantity1 piece acceptedEconomical MOQ 5–10 piecesQuality Assurance ProtocolChemical CompositionOES spectrometer every heat — Cr/Ni/Mo/N verified against ASTM limits; ferrite measurement for all duplex grades (target 35–65%)Mechanical PropertiesTensile test coupon from same heat — YS, UTS, elongation, hardness documented per EN 10204 3.1Dimensional VerificationCMM full inspection — bore Ø, tip diameter, vane pitch, face parallelism, wear ring groove dimensionsSurface NDELiquid Penetrant (PT) 100% coverage on all vane surfaces, shroud transitions, and bore area — detects micro-cracks invisible visuallyDynamic BalancingISO 1940-1 G2.5 or G6.3 grade on dedicated balancing machine; unbalance report per pieceCertifications & DocsISO 9001:2015 · PED CE · EN 10204 3.1 (material cert + balance report + CMM FAI) included per shipmentApplications by IndustryDouble suction centrifugal pump impellers from Geluobao are deployed across these sectors:Municipal Water Supply & Distribution PumpsAgricultural Irrigation Main Transfer PumpsHVAC Chilled Water & Cooling Tower CirculationFire Protection Systems (NFPA 20)Seawater Intake & Desalination Feed PumpsPower Plant Condenser Circulating WaterMine DewateringIndust
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