Custom Grey-Iron Sand-Cast Impellers — GG20/GG25/GJL20/GJL25 References, Semi-Open/Closed and 4/12-Blade Enquiries
Direct factory support
Get a quote that fits your project
Send your drawing or product reference, material grade and required quantity. Relia will review the requirements with you.
- Drawing & specification review
Confirm the supply scope and critical requirements.
- Samples before custom production
Review inspected samples before approving a batch.
- Inspection documents
Agree material and dimensional records for your part.
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Blade ShapeCurved Blade, Folded, Serrated Blade, Straight Blade, Spiral Blade, Turbine Blade, WavyFinishOther, Polished, Satin
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Number of Blades4, 12Surface TreatmentPainting, other
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typeSemi-Open, Closedwarranty3 Years
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customized supportODM
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Mounting OrientationHorizontal, Rotor Down, Universal
Custom impellers should be selected through the blade geometry, material and mounting arrangement. This ODM enquiry includes grey-iron sand casting with GG20, GG25, GJL20 and GJL25 references. Carbon steel and stainless steel are separate material selections for the actual design.
Define the form and blade arrangement
Semi-open and closed forms are named, with four- or twelve-blade choices. Shape enquiries include curved, folded, serrated, straight, spiral, turbine and wavy blades. Identify the actual combination required by the drawing rather than assume every shape and blade count forms one configuration.
- Specify the impeller diameter and controlled geometry.
- Select the complete material designation and standard.
- Identify form, blade count and blade shape.
- Describe mounting orientation and mating interfaces.
Match the mounting and duty requirements
Orientation enquiries include horizontal, rotor down and universal. Define the intended installation and the interfaces that locate the impeller. State the operating duty and acceptance requirements relevant to that arrangement instead of assuming universal fit from an orientation label.
Select the finish for the ordered component
Polished, satin, painting and other requested finishes are named choices. Identify the desired result and any functional surfaces needing particular instructions. Keep the finish requirement aligned with the selected metal and component geometry.
Agree the grade and warranty scope
Specify the governing standard for GG20/GG25/GJL20/GJL25 or the separate steel selection. A three-year warranty is stated, with coverage to be agreed for the selected impeller. Quantity, dimensions and duty should establish the supplied item without an inferred flow, pressure or rotational rating.
