Frequently Asked Questions (FAQ) | Derick Casting & Forging | 24h Free Consultation

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FAQ - Answers to Casting/Forging/Machining Questions for Global Industrial Buyers | 24h Response

Below are the most frequently asked questions from our global customers about casting, forging and precision machining services. If you don't find the answer you need, please contact us - we provide customized answers within 24 hours.

Casting FAQ

  • Q: What is the minimum order quantity (MOQ) for casting parts?
    A: For prototype/small batch: 1 piece; For mass production: 50 pieces (depends on part size/material).
  • Q: What materials can you cast?
    A: Stainless steel (304/316L/2205), aluminum (A356/A380), bronze (C90300/C95400), carbon steel (WCB/1045), alloy steel.
  • Q: What is the lead time for casting parts?
    A: Prototype: 2-3 weeks; Mass production: 4-6 weeks (includes pattern making, casting, finishing).
  • Q: What is the dimensional tolerance for castings?
    A: Investment casting: plus/minus 0.1mm (CT6-7); Sand casting: plus/minus 0.5mm (CT10-12); Lost foam casting: plus/minus 0.3mm (CT8-10).
  • Q: Do you provide material certification for castings?
    A: Yes, we provide mill test report (MTR), chemical composition report and mechanical property report for all castings.

Forging FAQ

  • Q: What is the difference between casting and forging?
    A: Casting: molten metal poured into mold (complex shapes, lower cost); Forging: metal pressed into shape (higher strength, no internal defects).
  • Q: What is the maximum weight for forging parts?
    A: Up to 5000kg (11023lbs) - custom for larger parts with special equipment .
  • Q: What is the lead time for forging parts?
    A: Prototype: 2-3 weeks; Mass production: 3-5 weeks (includes material preparation, forging, heat treatment).
  • Q: Can you forge stainless steel?
    A: Yes, we can forge 304/316L/2205 duplex stainless steel (hot forging at 1100 to 1250 degrees Celsius).
  • Q: Do you provide heat treatment for forgings?
    A: Yes, we offer quenching, tempering, annealing, normalizing (per material/strength requirements).

Machining & General FAQ

  • Q: What is the precision of your CNC machining?
    A: CNC turning/milling: plus/minus 0.005mm; Surface finish: Ra 1.6 micron (can reach Ra 0.8 micron with polishing).
  • Q: Can you machine casting/forging parts?
    A: Yes, we provide one-stop service: casting/forging + precision machining + finishing (ISO 9001 certified).
  • Q: How do you calculate pricing for custom parts?
    A: Pricing depends on material cost, part size/complexity, process (casting/forging/machining), quantity and finishing requirements.
  • Q: Do you accept OEM/ODM orders?
    A: Yes, we accept OEM (custom parts per your drawing) and ODM (design + manufacturing per your requirements).
  • Q: What quality control do you have?
    A: ISO 9001:2015 certified, 100% inspection before delivery, NDT testing (RT/UT/MT/PT), dimensional inspection with CMM.
  • Q: Do you ship worldwide?
    A: Yes, we ship to 50+ countries via sea/air/courier (DHL/FedEx/UPS) - door-to-door service available (clearance assistance included).

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