FAQs About Casting Products and Services-Zeren

General Information

Q1: What size products can you produce?

We can manufacture products ranging from approximately 1g to 100 kg, covering a wide range of industrial applications.

Q2: What materials can you cast? Can I add an OEM logo to the product?

We cast stainless steel, carbon steel, alloy steel, duplex steel, nickel-based alloys, Heat-Resistant and Wear-Resistant Steel, etc.

OEM logo customization is fully supported.

Q3: What surface finishes can you provide?

We achieve a casting surface finish of Ra 3.2, and a machining finish of up to Ra 0.4.

We also offer electrophoresis, blackening, polishing, electroplating, galvanizing, chrome plating, powder coating and other surface treatments.

Sampling and Engineering

Capabilities

Q4: How can I get a sample?

Samples are available upon request. Please provide your product details, and we will arrange sample production accordingly.

Q5: What types of CAD files do you accept? How can I send large files?

We accept UG, STP, STEP, Parasolid, and other common formats. Files can be sent directly to casting@gdzeren.com, or large files can be uploaded via platforms like WeTransfer or Dropbox.

Q6: Can you assist with engineering support and design optimization?

Yes, our engineering team offers DFM (Design for Manufacturability) analysis to help optimize product design for better performance and cost efficiency.

Production and Quality

Capabilities

Q7: What is your minimum order quantity (MOQ)?

Normally for general materials, our MOQ is about 20-30 pieces. However, for products with complex or special materials, we are flexible. Please contact us for more details.

Q8: How do you ensure the quality of your products?

Our entire production process implements Total Quality Management (TQM) and a comprehensive process parameter recording and traceability system. We apply the Seven Basic Tools of Quality to analyze and improve any identified quality issues.

The following equipment is used to inspect product quality:
* Microscope: Detects impurities and examines particle size and shape in refractory materials.
* Thermometer: Measures and controls the pouring temperature of molten steel.
* Spectrometer: Analyzes and controls the chemical composition of molten steel before pouring.
* Coordinate Measuring Machine (CMM): Conducts dimensional inspections of castings.
* Hardness Tester: Measures the hardness of castings.
* Calipers, Micrometers, etc.: Verify product dimensions.

Comprehensive inspection reports are available on request.

Q9: Can you provide customized solutions or develop new products?

Yes, we offer complete customization from design, mold production, casting, CNC machining, heat treatment to surface finishing according to your specific requirements.

Payment, Delivery, and After-Sales

Capabilities

Q10: What is your payment policy?

* Sample orders: 100% T/T payment in advance (or other agreed methods).
* Bulk orders: 50% T/T deposit in advance, with 50% balance before shipment.

Q11: What are your delivery and logistics options?

We support sea freight, air freight, and express services (DHL, FedEx, UPS, TNT). Customized logistics solutions are also available based on customer needs.

Q12: How long is your delivery time?

* Samples: about 7–10 working days
* Mass production: about 20–50 working days depending on product complexity and order quantity.

Q1: What size products can you produce?

Q2: What materials can you cast? Can I add an OEM logo to the product?

Q3: What surface finishes can you provide?

Q4: How can I get a sample?

Q5: What types of CAD files do you accept? How can I send large files?

Q6: Can you assist with engineering support and design optimization?

Q7: What is your minimum order quantity (MOQ)?

Q8: How do you ensure the quality of your products?

Q9: Can you provide customized solutions or develop new products?

Q10: What is your payment policy?

Q11: What are your delivery and logistics options?

Q12: How long is your delivery time?

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