Shiv Sai Export & Import is a cast iron components manufacturing company serving OEMs and industrial buyers who need dependable castings made to their own drawings. We are also an SG iron & graded casting manufacturer, supplying grey iron, SG (ductile) iron, alloy cast iron and special graded castings with machining and finishing coordinated under one point of contact.
Whether you need a pump body, a valve housing, a machine base or a wear-critical part, we help you choose a suitable material, confirm feasibility from your drawing, and take the part through to inspected dispatch.
As an SG Iron & Graded Casting Manufacturer, we produce ductile iron and special graded castings for components that require higher strength, toughness, or wear characteristics than standard grey iron.
SG iron, also known as ductile iron, contains graphite in a nodular (spheroidal) form rather than flake form. This structure generally provides higher tensile strength and improved impact resistance compared to grey cast iron, making it suitable for components subject to higher mechanical loads.
Special graded castings are cast iron components produced with alloy additions or process adjustments to meet specific mechanical, wear, or application requirements. These are developed based on the customer's drawing, technical specification, and intended use, rather than a fixed standard grade.
Custom manufacturing is carried out based on:
Grey cast iron is a widely used casting material known for good machinability, vibration damping, and compressive strength. It is commonly suitable for housings, bases, brackets, and general-purpose industrial components.
SG iron offers improved tensile strength and ductility compared to grey iron, making it suitable for components subject to higher stress, impact, or dynamic loading, such as pump and valve bodies or structural machine parts.
Alloy cast iron incorporates additional elements to enhance specific properties such as wear resistance or hardness, depending on the application requirement. Suitable use cases are evaluated based on the component's operating conditions.
Special graded castings are engineered for particular mechanical, thermal, or wear-related requirements that standard grades may not fully address. These are developed in coordination with the customer's technical specifications.
We manufacture cast iron and SG iron components according to specific customer requirements, including:
Customers can share drawings, samples, or technical data sheets for evaluation prior to manufacturing.
A typical cast iron and SG iron manufacturing workflow can include:
The exact sequence depends on component design, material grade, production quantity, and any secondary operations required.
Material selection depends on the component's mechanical requirements, application environment, machinability needs, and customer specification. Our casting capabilities cover:
Specific grade designations and chemical compositions are confirmed according to the customer's drawing, material standard, or technical data sheet at the time of order.
Cast iron and SG iron components manufactured by Shiv Sai Export & Import are used across a range of industrial sectors, including:
Suitability for a specific application is confirmed based on the component drawing and operating conditions.
Quality checks are carried out according to the component and customer requirements. Depending on the project, inspection can include:
Inspection requirements for critical components can be discussed during the drawing review stage.
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SG iron, or ductile iron, is a type of cast iron in which the graphite forms as nodules (spheroids) rather than flakes. This structure generally gives SG iron higher tensile strength and better impact resistance than grey cast iron, making it suitable for components subject to higher mechanical stress.
Grey cast iron contains graphite in flake form, which provides good machinability, vibration damping and compressive strength, but lower tensile strength and ductility. SG iron contains graphite in nodular form, which improves tensile strength and impact resistance, making it more suitable for higher-load or dynamic applications.
Special graded castings are cast iron components manufactured with specific alloy additions or process adjustments to meet particular mechanical, thermal or wear requirements that go beyond standard grey or SG iron grades. These are developed based on the customer's technical specifications.
Yes. Cast iron and SG iron components can be manufactured according to customer drawings, CAD files, samples, dimensions and material specifications, subject to technical and manufacturing feasibility.
Cast iron and SG iron components are used in pumps and valves, automotive, railways, industrial machinery, power and energy, mining, construction and chemical or process industry applications, among others.
Yes. Where required, cast iron and SG iron components can undergo secondary operations such as drilling, tapping, milling or CNC machining to achieve the required dimensions, holes or functional features.