Iron Casting

We offer green sand casting, resin sand casting as well as shell mold casting. The company is ISO9001 certified and produce according to international engineering standards. We are a leading manufacturer of cast iron products. We make ductile iron castings, shell mold castings, and other gray iron castings. We provide you the best service and quality products.

Sand Casting Production Floor:

Our Advantage:

* Consistent Quality

* English Speaking Engineering Team

* Full Solution: Machining, Coating, Assembly

Shell Mold Casting:

Material Choices:

Pearlitic malleable iron ASTM A220: 40010 (DIN GTS-45),50005…

Ductile cast iron ASTM A536: 60-40-18 (DIN GGG40), 65-45-12, 70-50-05…

Grey cast iron ASTM A48: Class No.60 (DIN GG40) to No.400 …

Continuous Casting Line:

Gray Iron:

Gray iron or grey iron is an alloy of carbon, silicon, and iron, containing from 1.7 to 4.5% C and 1 to 3% Si. It is relatively easy and inexpensive to make. Gray iron has a lower tensile strength and lower ductility.

It fails more easily, and its mode of failure will be sudden fracture (it will not bend). Gray iron is often used for housings where tensile strength is non-critical, such as engine blocks, pump housings, valve bodies, decorative castings and electrical boxes.

Pearlitic Malleable Iron:

The structure being a metastable carbide in a pearlitic matrix. Through an annealing heat treatment the brittle as cast structure is transformed. Carbon agglomerates into small roughly spherical aggregates of graphite leaving a matric of ferrite or pearlite according to the exact heat treat used.

It is often used for small castings requiring good tensile strength and the ability to flex without breaking (ductility). Electrical fittings, hand tools, pipe fittings, brackets, mining hardware, farm equipment, and machine parts.

Ductile Iron:

also called nodular cast iron, or ductile iron. has a higher “yield strength” than malleable iron, meaning it can bear greater loads.

Green Sand Casting

Advantages of Green Sand Casting:
1. Most ferrous / non-ferrous metals can be used.
2. Low Pattern & Material costs.
3. Almost no limit on size, shape or weight of part.
4. Adaptable to large or small quantities.
5. Used best for light, bench molding for medium-sized castings or for use with production molding machines.

Resin Sand Casting

The chemical bond sand consists of sand and synthetic binders cured thermally or chemically. Allows production of more complex and accurate shape.

Shell Mold Casting

Shell mold casting process offers better surface finish, better dimensional tolerances, and higher throughput due to reduced cycle times. The materials that can be used with this process are cast irons, and aluminum and copper alloys. Typical parts made with this process are connecting rods, gear housings, lever arms etc.

Shell Molding Casting Includes the Following Steps:

1. Sand is pre-coated with a resin that bonds the sand grains together.
2. A tool, or pattern, is coated with the resin coated sand.
3. The coated pattern is heated, curing or hardening the sand. This part of the process bonds the resin and sand creating a hard surface shell that is .5” to 1” thick.
4. The hardened shell mold is stripped from the pattern. This creates one half of the cavity that will be used as the mold. The process is repeated to create the other shell mold half.
5. Two shells are glued together to form the cavity that holds the molten metal.
6. Once the mold is created it is loaded onto the conveyor line and molten metal is poured into it.
7. After the mold goes through a cooling process, the sand shell is stripped from the casting.
8. The sand is recycled and the part is ready for machining or surface finishing.

How Can X-Pro Help With My Project?

X-Pro helps clients with one-time and ongoing project needs. Our specialties include 3D modeling, 3D design, CAD drafting, 3D animation, engineering and 3D renderings, 3D industrial design, prototype design, 3D printing design, mechanical design, architectural design, structural design, 3D interior design, and CAD landscaping design services.

Our CAD designers and drafting contractors work with AutoCAD, SolidWorks, Autodesk Inventor, Maya, 3ds Max, CATIA and many other types of software. Submit your project description and work with a pre-qualified 3D artist, CAD designer, drafter, 3D modeler, 3D animation or engineer specialized for your project needs.

The Project Flow

1. Tell us about your project

Describe your project, estimate the number of hours needed, the duration, and software requirements.

2. Pre-qualified expert freelancer

One of our engineers will contact you to discuss your project and gather more details.

3. Deposit & work

Agreement will need to be signed and payment deposit made in order to begin a project.

FAQ for your new project

Why X-Pro?

We connect you with the best designers in the business, and we offer the most comprehensive set of services for inventors you’ll find anywhere. We take the guesswork out of online design services, and let you focus on what’s important.

How do private projects work?

Simple. Just send us a project brief and we will provide you with a design quote from a pre-qualified designer for your project.

Who can see my project?

Private projects are entirely confidential. Only you and the designer that you will be working with will see your project description, file attachments and submitted work.

Do I own the designs & IP?

Yes. Our legally binding terms of service assign the ownership of intellectual property (IP) from the designer to the service buyer for any paid designs.

Do you offer manufacturing services?

Yes we do! We offer a range of  manufacturing services, including 3D printing, rapid manufacturing and conventional injection molding.

How is a design project different from hourly services?

Design projects are limited-term projects with a concrete budget, based on an upfront quote from the CAD designer. Hourly services are for ongoing work that generally have an open work scope.

Will designers sign a NDA?

We’ve got this covered. Our legally binding terms of service covers freelancer non-disclosure. Freelancers on X-Pro have agreed to and are bound by the terms of non-disclosure that are outlined in our terms of service.

Got a question? Get in touch

We’re here to help. Send us an email or get a personalized quote.


24 Hours a day

7 days a week

365 days a year

22206, Arlington VA
571 581 2377