 Dongying haihe precision Metal Co., Ltd. is one of the largest corporation of precision of Shandong. It has full sets of equipment that are introduced from Taiwan.
Haihe allows the production of both netshape and near net parts, specializes in manufacturing precision casting of stainless steelm alloy steel and carbon steel. We have advanced process in die making, machining, polishing and so on.
Haihe is a professional foundry with decades of experience. The company's implementation of ISO9002 quality system has been authenticated We own more than 30000 spuare meters plant area, and have perfect product quality insurance department.
Our aim is reliable quality and cordial service. We are glad to develop with you cordially.
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 We are Dongying Haihe Machinery Co., Ltd located in Dongying Shandong China. We are specialized in stainless steel castings, carbon steel castings and alloy steel castings. We can offer your demand according to your specifications.
Our products include all kinds of flanges, valves, marine hardwares, construction hardwares, house hardwares, automobile parts, motorcycle parts, hinges, and so on. With high quality and good reputation, we have established good relationships with many customers from USA, Canada, Holland, Germany. And our company had got ISO 9001 quality system certification.
I want to build cooperation with your esteemed company. We can provide the high quality products with competitive price. I have the confidence that we will satisfy you if you give us the chance.
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 Concept of Investment Casting
By covering a Wax model with ceramic material a shell is created, after melting down the wax, the shell can be used for casting metal.
Compared with other metal forming methods, the investment casting process offers many benefits, these including:
Deign Flexibility------Almost any shape, any configuration, can be investment cast. Complex assemblies can be cast as a unit.
Close Dimensional Tolerances & Good Surface Texture
Cost Reduction-----With the ability to cast near net shapes, costly machining operations are reduced and often eliminated.
Production Runs-----Total production flexibility, accommodating both high and low volume.
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 Advantages of Haihe
Interested in castings with complicated configurations
cast most ferrous alloys, such as stainless steel, carbon steel, low alloy steel, heat resistant alloys, and also some non-ferrous materials.
with strong capability of secondary operations, including machining, polishing and various surface treatments.
With competitive human resources, especially technical and management team with enthusiasm and enough experience.
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 We have the strongest engineering ability in the investment casting field in China, which guarantees the successful development of investment castings and secondary treated products. By communicating with our company, you will find that your ideas and designs can be realized quickly and satisfactorily. |
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 Quality Assurance:
As an ISO-9002 certified company, we maintain stringent quality controls throughout all phases of material preparation, production and final part test and inspection. We have never failed a quality audit or lost a customer for quality reasons.
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 Castings are 100% subjected to dimensional and visual inspection by in-process inspectors. The results of this in-process inspection are entered into computer and be used to make process improvements by our Engineering and Quality personnel.
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 Before pouring, each charge is sampled for chemical composition by a spectrometer, and each sample will be kept for at least one year for traceability.
After heat treatment, the mechanical properties and microsture will be checked to verify conformance to specification.
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