Renyi Castings

[email protected]

24/7 Customer Support

Mon - Fri: 9:00-17:30


Ningbo city

China 315137

sand casting Pouring Line

An orderly and well-organized casting line installed like ours can improve safety and reduce personnel operations, increase production capacity, and bring customers the advantage of reducing production costs.

sAND Castings services

Renyi Castings

Sand casting is a versatile and cost-effective manufacturing process that is commonly used to produce a wide range of complex and intricate parts. At Renyi Castings, we specialize in providing high-quality sand casting services for a variety of industries. Our sand casting service offers numerous advantages, including:


Sand casting can be used to produce parts of various sizes and shapes, making it a highly versatile manufacturing process.


Sand casting is a cost-effective alternative to other manufacturing processes such as die casting, forging, and machining.

Complex Geometry

Sand casting can produce parts with complex geometries, including internal features and undercuts.

Large Part Size

Sand casting can produce parts that are much larger than those that can be produced using other manufacturing processes.

At Renyi Castings

We have the expertise and equipment necessary to provide high-quality sand casting services for a wide range of applications. Our state-of-the-art facility is equipped with the latest technology and machinery, allowing us to produce high-quality parts with exceptional accuracy and efficiency.

We offer a variety of sand casting processes to choose from, including green sand casting, resin sand casting, and shell mold casting. Our experienced team of engineers and technicians will work closely with you to select the best sand casting process for your specific application, ensuring that your parts meet your exact specifications.

In addition to our sand casting services, we also offer a range of secondary operations, including machining, finishing, and assembly. This allows us to provide complete, turnkey solutions to our customers, saving them time and money.

At Renyi Castings, we are committed to providing our customers with the highest quality sand casting services possible. Contact us today to learn more about how we can help you with your next project.

Automatic sand casting moulding Line

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Sand Casting

Sand casting, is a metal casting process that uses sand as a molding material. The factory that specializes in sand casting is generally called a foundry. In China or the world, the castings produced by sand moulds account for more than 80% of the castings produced by various casting moulds. 

The sand used in sand casting is relatively cheap and has sufficient refractoriness, even in cast steel. In addition to sand, a properly proportioned binder (usually clay) is usually mixed or present in the sand. Water is usually added to the sand, but sometimes other substances are also added to change the strength and plasticity of the clay to produce a suitable degree of polymerization for the modeling. Sand is usually contained in a frame system or a mould box is used. The casting cavity is made by compressing the sand around the model, or using a template, or directly carving on the sand mold.

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cast Iron Sand Casting

Renyi iron foundry both have handmade clay sand casting pattern and resin sand casting pattern. 

There are automatic & manual molding line, for large QTY, Adopt automatic molding line for casting production, that will greatly lower the casting cost and speed up the lead time, 

however, for small QTY order, will use our manual molding line for casting production, that means the cast with dozen or hundred in a short lead time.

  • ASTM A48
  • CLASS 30A
  • CLASS 35A
  • CLASS 40A
  • CLASS 45A
  • EN-GJL-150
  • EN-GJL- 200
  • EN-GJL- 250
  • EN-GJL- 300
Customer service
Feedback RFQ In 12 Hours

Our professional sales team will feedback your RFQ within 12 hours, and give you the Quotation within 48 hours max. if the drawing and specification is all in details.

For normal project, we can complete Mould and supply the 1st article sample within 30 to 40 days.

For urgently project, we can complete the Mould and Sample within 20days max.

For Mould/tooling and sample : 50% deposit pay by Order, rest 50% pay after sample approval.

For production Order for new Customers : we request 30% down payment, rest 70% pay by copy of Original B/L copy. For long lasting regular customer, we can give better payment terms, such as 100% pay after delivery or by B/L copy.

Quality is our life, during production, from QC to all our operators, we take quality as first thing, during the 1st Article sample and production, our team maintains the quality with same high level. However, no matter how we strictly to the quality, it is a possibility to supply non-qualified shipment to our clients, if this unhappy thing be happen, we will try our very best to negotiate with our customers and solve it as following : and try to reduce our customer’s loss as less as possible, then we will both earn experience from the lessons and definitely for our future  repeat order, we can supply the excellent quality shipment.

If the Order shipment have any quality problem, we will be open to discuss with clients, and manage to solve the non-conformity at our best efforts. If Client can repair the parts at locally, we can compensate back to re-pair local re-work cost. If can not be re-worked, we will return back the 100% money or issue a Credit note for the replacement of amount. Or replacement the new QTY of shipment to client. And if the non-conformity is not critical, customer can compromised accept them, we’re happy to discuss friendly with customer by give some discount to close this non-conformity shipment.

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Ductile Iron Sand Casting

Sand casting is a procedure that makes use of non-reusable sand mold and mildews to create metal spreading’s.

It is a common manufacturing approach for metal parts of all dimensions, from a couple of ounces to several tons. Sand casting isn’t only versatile in the dimension of its items — it can additionally produce incredibly complicated or detailed spreading’s, as well as can be utilized to cast almost any kind of steel alloy.

Offer remarkable high quality iron sand castings components and elements to markets including vehicle, transportation, mining, petrochemical, electrical, power and also others. We cast sand casting components approximately 10 metric loads. Materials can be aluminium alloy, ductile iron, brass alloy, Grayiron, etc.

Provide high accuracy CNC machining and also other additional procedures. We also offer quick model solutions. Both low to high-production quantity sand spreading rate.

  • AISI/ASTM 60-40-18
  • AISI/ASTM 65-45-12
  • AISI/ASTM 80-55-06
  • EN-GJS-400-18
  • EN- GJS-400-15
  • EN- GJS-450-10
  • EN- GJS-500-7
  • EN- GJS-600-3

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Aluminum Sand Casting

Engineers team to design aluminum sand casting tooling and have an internal tooling workshop to machining the tooling/mold, which will greatly help clients to improve the casting quality, shorten the 1st article sample approval time and save the tooling cost.

Supply the aluminum raw sand casting to final finish product, including precision machining and surface treatment such as impregnation treatment, Mirror polish, powder coating, chrome plating, and other specialty finishes. Fast Tooling & sample lead time, competitive tooling cost and reasonable unit price, consistently good quality.


Al319 (ZL107)
A356.0 /G—AlSi7Mg( ZL101 )
A413.0 / LM20/G—AlSi12 ( ZL102 )
A336.0 AlSi12Cu
also, we can cast sand casting from pure aluminum such 6061/6062/6063 type, besides, we can offer T6 heat treatment.