Professional mold design team,Produce in strict accordance with the requirements of the drawings to ensure the processing size.
Product Description
Professional mold design team,Produce in strict accordance with the requirements of the drawings to ensure the processing size.
The appearance surface is clean without bumps, no pores and sand holes.
1. Use precision instrument endoscope to detect internal defects and ensure the quality of oil circuit.
2. Take the casting test bar and conduct tensile test, elongation test, microscope golden image test.
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Product Name |
sand casting /grey iron casting / ductile iron casting /iron casting machining parts |
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Casting Service |
sand casting, Horizontal line automatic moulding, Resin sand moulding |
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Material |
GG20,GG25,GG30 / GGG40,GGG45,GGG50,GGG55,GGG60,GGG70 |
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Tooling Design |
We have own RandD team,do DFM and Mode flow analysis |
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Standard |
China GB high precision standard. / Non-standard customization |
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Surface Finish |
Sand blasting, Mill Finishing, electrophoresis , galvanizing, Eco-friendly primer, Antirust oil |
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Drawing |
3D Drawing: .step / .stp /.igs, 2D Drawing: .dxf/ .dwg / .pdf /.jpg / .tif /.bmp |
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MOQ |
300kgs |









The casting material ranges from HT250 to HT350, QT400-18 to QT700-2, RuT260 to RuT420, and all other kinds of alloy iron casting.


Coated sand casting components have been widely used in various industries due to their high precision, complex structural forming ability, and excellent surface quality. We provide hydraulic solutions such as gear pumps, multi way valves, solenoid valves, hydraulic motors, etc. for the engineering machinery, agricultural machinery, coal mining machinery, metallurgical and chemical industries.
The materials used include gray cast iron, ductile iron, and nodular cast iron
All of these materials are designed to ensure lightweight structures, enhance wear resistance, and reliability under extreme environmental conditions.



Q1: What is the highest precision that Film coated sand shell casting can achieve?
A: Film coated sand shell casting can achieve ISO 8062 CT9 level precision (key dimensions ±0.3mm).
Q2: Do we accept small batch orders? How long does the delivery time usually take for
small batch orders?
A: Yes, of couse. We adopt a flexible production system to ensure a rapid response, utilizing 3D printing of film coated sand shell casting and validating the casting process.
Under normal circumstances, the delivery time for small batch orders will be influenced by the order size, complexity, and
production scheduling. Upon receiving the order, we initiate the production process promptly and maintain close communication with the customer to ensure the timely delivery of precision casting parts that meet the requirements.
Q3: How can we ensure the internal quality of the castings?
A: we employ a four-level inspection system to ensure the internal quality of the castings:
● Process monitoring: Use industrial endoscopes for 100% full inspection to ensure the quality of the internal cavity.
● Physical and chemical analysis: Using direct reading spectrometers and electron microscopes (inclusion detection accuracy up to 0.01mm level) for analysis.
● Mechanical verification: Sampling each batch of castings for fatigue testing (number of cycles > 10^7 times).
● Digital traceability: If special requirements are present, we will add a casting number to each batch of parts, achieving full traceability of the melting batch and process parameters.
Q4: Do we provide one-stop service for subsequent machining/surface treatment?
A: We provide a one-stop integrated service for the entire process chain:
● Machining support: Five-axis CNC + coordinate grinding machine (positioning accuracy up to ±0.03mm)
● Surface strengthening: Shot peening / phosphating/nitriding / PVD coating (hardness up to HRC65)
● Assembly and inspection: Equipped with air tightness testing and dynamic balance testing equipment.
The surface of each casting is smooth and clean, free from bumps, pores, and sand holes.Every product undergoes 100% inspection before packaging to ensure flawless quality.
1. Precision Endoscopic Testing: Advanced endoscopic instruments are used to detect internal defects and guarantee the reliability of the oil circuit.
2. Comprehensive Material Testing: Casting test bars are subjected to tensile, elongation, and metallographic (microstructure) analysis to ensure mechanical strength and material integrity.
Conventional packaging is wooden box or wooden pallet and wrapped with plastic film.
Or can be customized according to customer needs
We have constructed strong and long co-operation relationship with an enormous quantity of companies within this business overseas. Immediate and specialist after-sale service supplied by our consultant group has happy our buyers. Detailed Info and parameters from the merchandise will probably be sent to you for any thorough acknowledge. Free samples may be delivered and company check out to our corporation. Hope to get inquiries type you and construct a long-term co-operation partnership.
We firmly think that we have the full capability to give you contented merchandise. Wish to collect concerns within you and build a new long-term synergy romantic relationship. We all significantly promise:Csame excellent, better selling price; exact selling price, better quality.



Xingtai Xiaolongwang Precision Hydraulic Pump Industry Co., Ltd.







