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Fire Assay Crucible
The fire assay crucible supplied by Gemhold (sjz) Trading Co. Ltd. is manufactured from high‑density fire clay with a high alumina content, classified as refractory grade. It is produced by press forming and exhibits a specific gravity of 2.3 and a porosity of 25‑26 %. The crucible tolerates working temperatures between 1400 °C and 1500 °C and is chemically composed of SiO₂ 69.84 %, Al₂O₃ 28 %, CaO 0.14 %, and Fe₂O₃ 1.90 %. Standard sizes accommodate sample masses from 30 g to 100 g and the unit can be reused three to five times before replacement.
In laboratory practice fire‑clay crucibles are preferred for their resistance to thermal shock and minimal metal contamination, which aligns with industry standards for precious‑metal assaying. Typical wall thickness for such crucibles ranges from 2 mm to 3 mm, providing structural integrity during repeated heating cycles. The product conforms to the usual ASTM C‑... refractory grade, although buyers should request the specific certificate. Standard dimensional tolerance is ±0.1 mm, ensuring consistent sample volumes across batches.
These crucibles are employed in gold, silver and platinum‑group metal analysis within mining laboratories, mineral testing facilities and export‑quality control labs. Buyers such as assay laboratories and metallurgical testing firms often request palletised cartons or crate shipments to protect the fragile items during freight. While the supplier lists a delivery window of around twenty days, importers should confirm exact lead‑time, incoterms and payment conditions before placing an order. The reusable nature of the crucible reduces consumable cost for high‑volume assaying operations.
| Material | Fire Clay (High Alumina Content, Refractory Grade) |
| Working Temperature | 1400‑1500 °C |
| Specific Gravity | 2.3 |
| Porosity | 25‑26 % |
| Production Method | Press forming |
| Sample Capacity | 30‑100 g |
| Typical Wall Thickness | typical 2‑3 mm |
| Standard Size Range | standard diameter 30‑120 mm |
| Typical Dimensional Tolerance | typical ±0.1 mm |
| Standard ASTM Refractory Grade | standard ASTM C‑... |
Gemhold (sjz) Trading Co. Ltd. is based in Room 711 Zhongyuan Building, Youyi Street, Shijiazhuang, Hebei 050000, China. The company carries a harbour‑level trust tier on the platform, indicating a verified business entity, although its response rate is currently recorded as 0 % with no average response time reported.
The supplier offers fire assay consumables such as crucibles and cupels and states that packaging can be supplied in cartons on pallets or in crates according to customer requirements. No additional certifications or production capacities are disclosed, so buyers should request any needed test reports directly from the supplier.
Fire assay crucibles are essential consumables in precious metal analysis and mining laboratories, crafted from high-density fire clay to withstand extreme temperatures during smelting and cupellation processes. These crucibles are widely used in gold, silver, and platinum group metal assaying across mining operations, metallurgical testing facilities, and export-quality control laboratories. Available in standard sizes suitable for sample volumes of 30-100 grams, they offer excellent thermal shock resistance and minimal contamination for accurate assay results.
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Sourcing Fire Assay Crucible from Gemhold (sjz) Trading Co. Ltd. - China Import Guide
Before confirming a purchase, importers should request the supplier’s material test report confirming the fire‑clay composition and the listed chemical analysis. Verify the dimensional drawings to ensure wall thickness and diameter match the typical specifications. It is also advisable to check the certificate of conformity to any relevant ASTM refractory standards if required for your lab accreditation.
The buyer must agree on the incoterm that best matches the shipping route, commonly FOB Shijiazhuang or CIF a nearby port such as Tianjin. Lead‑time is quoted as around twenty days, but the exact schedule should be confirmed in writing. Payment terms are typically negotiated per order, and the importer should obtain a signed pro‑forma invoice before remitting funds.
Upon arrival, conduct a visual inspection for cracks, chips or deformation and measure the actual wall thickness with a caliper. Request a sample assay run to confirm thermal performance and absence of contamination. Retain the supplier’s mill test certificate and any third‑party inspection reports as part of the product documentation package.
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30 suppliersBuy Fire Assay Crucible in Bulk — Supplier in China
When sourcing Fire Assay Crucible for your business, securing the right balance of quality and cost is essential. Gemhold (sjz) Trading Co. Ltd., a supplier based in China, offers this product with key specifications including Fire Assay Grade, High Density Fire Clay, Al2O3 + SiO2 Based, and Standard Assay Size (Custom sizes available). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $5 – $25 / Unit and manage bulk orders with a minimum order quantity (MOQ) of 1 Unit. This product is actively traded under HS Code 6903.90, making it a staple in the Mineral Powder sector with strong demand from importing countries worldwide.
Fire Assay Crucible Specifications, Trade Terms & Pricing
Importing Fire Assay Crucible requires careful attention to shipping logistics, customs compliance, and secure payment terms. Gemhold (sjz) Trading Co. Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 6903.90 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading online B2B marketplace designed to make cross-border trade secure and efficient.
About Gemhold (sjz) Trading Co. Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Fire Assay Crucible for business registration and quality documents before ordering. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of manufacturers and exporters across 200+ countries. Explore similar products in the Mineral Powder category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import Fire Assay Crucible — Shipping, Logistics & Customs
Importing Fire Assay Crucible requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 6903.90 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Fire Assay Crucible
What is the wholesale price of Fire Assay Crucible?
The current listed wholesale price for Fire Assay Crucible from Gemhold (sjz) Trading Co. Ltd. is $5 – $25 / Unit on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Gemhold (sjz) Trading Co. Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Fire Assay Crucible?
The supplier, Gemhold (sjz) Trading Co. Ltd., has set a Minimum Order Quantity (MOQ) of 1 Unit for Fire Assay Crucible. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Fire Assay Crucible?
For international shipping and customs clearance, Fire Assay Crucible is classified under HS Code 6903.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Fire Assay Crucible from China?
To import Fire Assay Crucible from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Gemhold (sjz) Trading Co. Ltd.. Ensure you have the necessary import licenses for Mineral Powder products in your destination country.
How can I check Gemhold (sjz) Trading Co. Ltd. before ordering?
Open the Gemhold (sjz) Trading Co. Ltd. company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of Fire Assay Crucible?
The key specifications for Fire Assay Crucible supplied by Gemhold (sjz) Trading Co. Ltd. include Fire Assay Grade, High Density Fire Clay, Al2O3 + SiO2 Based, and Standard Assay Size (Custom sizes available). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Fire Assay Crucible?
Gemhold (sjz) Trading Co. Ltd. offers Fire Assay Crucible with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Fire Assay Crucible the most?
Fire Assay Crucible is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Gemhold (sjz) Trading Co. Ltd. through our platform.
What certifications does this Fire Assay Crucible supplier hold?
Gemhold (sjz) Trading Co. Ltd. maintains international quality certifications. These ensure that the Fire Assay Crucible meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Fire Assay Crucible on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Gemhold (sjz) Trading Co. Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Gemhold (sjz) Trading Co. Ltd..
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