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Add: No. 58, Lingshanwan Road, Qingdao, China

Phone: +86 186 6184 7678

Fax: +86 532 8687 1520


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Gray Cast Iron Parts

Gray Cast Iron Parts

Material: Gray Cast Iron HT250, GG25, EN-GJL-250
Process: Green Sand Casting + CNC Machining
Weight: 8 kg
Application: Valve Parts

OEM gray iron casting parts and ductile iron casting parts as per your customized requirements.


OEM Cast Iron Products

Sand casting process offers the greatest flexibility and the most cost-effective tooling. Our sand casting foundry is equipped with a complete metallurgical laboratory to determine the chemical and mechanical characteristics of each melt and to analyse the metallugic condition of the molten metal before pouring. Microsections are examined under the microscope to obtain final information on the solified casting. We issue 3.1 certificate for each delivered part on customer request.


Cast Iron Grade Standard
Grey Cast Iron EN-GJL-150 EN 1561
Ductile Cast Iron EN-GJS-350-22/LT EN 1563
Austempered Ductile Iron EN-GJS-800-8 EN 1564
SiMo Cast Iron EN-GJS-SiMo 40-6
EN-GJS-SiMo 50-6

As an OEM gray iron casting parts manufacturer and foundry, RMC can pour iron castings using our No-bake process up to ten tons finished weight in gray iron castings and ductile iron castings, and up to five tons in steel castings and stainless steel castings. RMC can produce casting parts in a wide variety of materials, including grey iron, ductile iron, stainless steel, carbon steel, wear-resistant steel, and heat-resistant steel based on different standards from China and overseas.

▶ Capabilities of Sand Casting moulded by hand:
• Max Size: 1,500 mm × 1000 mm × 500 mm
• Weight Range: 0.5 kg - 500 kg
• Annual Capacity: 5,000 tons - 6,000 tons
• Tolerances: On Request.

▶ Capabilities of Sand Casting by Automatic Molding Machines:
• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg - 500 kg
• Annual Capacity: 8,000 tons - 10,000 tons
• Tolerances: On Request.

▶ Main Production Procedure
• Patterns & Tooling Design → Making Patterns → Moulding Process → Chemical Composition Analysis → Melting & Pouring → Cleaning, Grinding & Shot Blasting → Post Processing or Packing for Shipment

▶ Post-Casting Process
• Deburring & Cleaning
• Shot Blasting / Sand Peening
• Heat Treatment: Normalization, Quench, Tempering, Carburization, Nitriding
• Surface Treatment: Andonized, Hot Dip Zinc, Polishing, Painting,
• Machining: Turning, Milling, Lathing, Drilling, Honing, Grinding,

▶ General Commerial Terms
• Main workflow: Inquiry & Quotation → Confirming Details / Cost Reduction Proposals → Tooling Development → Trial Casting → Samples Approval → Trial Order → Mass Production → Continuous Order Proceeding
• Leadtime: Est. 15-25 days for tooling development. Est. 20 days for mass production.
• Payment Terms: To be negotiated.
• Payment methods: T/T, L/C, West Union, Paypal.

Sand Casting Facilities at RMC:

sand casting facilities

Sand Casting Equipment at RMC Foundry

Sand Casting Equipment Inspection Equipment
Description Quantity Description Quantity
Vertical Automatic Sand Mold Casting Line 1 Hareness Tester 1
Horizontal Automatic Sand Mold Casting Line 1 Spectrometer 1
Medium-Frequency Induction Furnace 2 Metallurgical Microscope Tester 1
Automatic Sand Molding Machine 10 Tensile Strength Testing Machine 1
Baking Furnace 2 Yield Strength Tester 1
Hanger Type Shot Blasting Machine 3 Carbon-Sulfur Analyzer 1
Sand Blasting Booth 1 CMM 1
Drum Type Shot Blasting Machine 5 Vernier Caliper 20
Abrasive Belt Machine 5 CNC Machining Machine
Cutting Machine 2
Air Plasma Cutting Machine 1
Pickling Equipment 2 Vertical Machining Center 6
Pressure Shaping Machine 4 Horizontal Machining Center 4
DC Welding Machine 2 CNC Lathing Machine 20
Argon Arc Welding Machine 3 CNC Milling Machine 10
Electro-Polish Equipment 1 Honing Machine  2
Polishing Machine 8 Vertical Drilling Machine 4
Vibrate Grinding Machine 3 Milling and Drilling Machine 4
Heat Treatment Furnace 3 Tapping and Drilling Machine 10
Automatic Cleaning Line 1 Grinding Machine 2
Automatic Painting Line 1 Ultrasonic Cleaning Machine 1
Sand Processing Equipment 2
Dust Collector 3