Import Tungsten Crucibles — Buy in wholesale FOB from Supplier in China
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Tungsten crucibles
Beijing Sunstone Tungsten & Molybdenum Co., Ltd. manufactures tungsten crucibles in China. The crucibles are made from tungsten with a purity of 99.95 % or higher, containing trace elements such as molybdenum, tantalum, carbon and oxygen. They are designed for ultra‑high‑temperature processes and can withstand temperatures above 2000 °C. The product line includes crucibles sized for hot‑zone capacities of 35 kg, 65 kg, 85 kg and 120 kg. Sunstone’s quality system is certified to ISO 9001 and ISO 14001.
Tungsten’s high density (≈19.25 g cm⁻³) and hardness (around 3500 HV) give the crucibles exceptional thermal stability and resistance to creep. Typical surface roughness is limited to Ra 0.2 µm, providing a smooth interior that reduces contamination during crystal growth. The company employs precision machining to achieve tight dimensional tolerances, which is critical for uniform temperature distribution in Czochralski furnaces. In the refractory vessel market, such specifications are standard for sapphire substrate and advanced alloy production.
Buyers such as LED substrate manufacturers, semiconductor fabs and specialty alloy processors regularly source these crucibles from Sunstone. The supplier has supplied hot‑zone parts to customers in Russia, Ukraine, the United States, Japan, Korea, Thailand, Singapore, Taiwan and Hong Kong. Interested importers should request detailed trade terms, including MOQ, Incoterms and payment conditions, as these are not disclosed in the listing.
| Material | Tungsten W99.95%+ (with trace Mo, Ta, C, O) |
| Purity | 99.95 % minimum |
| Maximum operating temperature | >2000 °C |
| Typical crucible capacity | 35 kg - 120 kg (standard set sizes) |
| Density (typical) | 19.25 g cm⁻³ (typical) |
| Hardness (typical) | ≈3500 HV (typical) |
| Surface roughness (typical) | Ra ≤ 0.2 µm (typical) |
| Grain size (typical) | 5 - 10 µm (typical) |
Beijing Sunstone Tungsten & Molybdenum Co., Ltd. is located in Shilong Development Zone, Mentougou District, Beijing, China, postal code 102206. The company is listed as an imported supplier with a harbor trust tier; its response rate is currently 0 % and average response time is not recorded.
Since establishing a sapphire crystal hot‑zone division in 2008, Sunstone produces tungsten rods, sheets, machined parts and crucibles for domestic and overseas markets. It operates under ISO 9001 and ISO 14001 quality management systems and maintains testing facilities for density, hardness, surface roughness, grain size, tensile strength and ultrasonic non‑destructive testing. The company highlights high density, high purity and precision machining as the main advantages of its crucibles.
Tungsten crucibles are high-purity refractory vessels designed for sapphire crystal growth, rare earth melting, and other ultra-high-temperature industrial processes. Typically manufactured from tungsten with purity of 99.95% or higher, these crucibles exhibit exceptional thermal stability and corrosion resistance at operating temperatures exceeding 2000 degrees Celsius. Widely used in LED substrate production, semiconductor fabrication, and specialty alloy processing, tungsten crucibles are a critical consumable and capital part in hot zone assemblies for Czochralski crystal growth furnaces. Global trade in these components is driven by demand from the sapphire and advanced materials sectors, with major supply from China, the United States, and Europe.
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Sourcing Tungsten crucibles from Beijing Sunstone Tungsten & Molybdenum Co., Ltd. - China Import Guide
Before placing an order, verify the material test report that confirms the 99.95 % tungsten purity and the surface‑roughness specification of Ra ≤ 0.2 µm. Ask for the ISO 9001 and ISO 14001 certificates and request a copy of the latest factory audit if possible. Clarify the exact crucible capacity (35 kg, 65 kg, 85 kg or 120 kg) required for your furnace to avoid mismatched dimensions.
Logistics for China‑origin crucibles typically involve sea freight from the port of Tianjin or Shanghai, but the exact departure port should be agreed with the supplier. Incoterms such as FOB, CIF or DDP are common, and payment terms often range from T/T in advance to L/C at sight; confirm the preferred arrangement before contract signing. Lead‑time estimates are not published, so request a realistic production schedule based on your required quantity.
When the shipment arrives, arrange a third‑party inspection that checks dimensional tolerance, surface finish and material purity against the supplied test reports. Request a mill test certificate and a non‑destructive ultrasonic inspection report with the delivery. Retain all certificates for customs clearance and for any downstream quality‑assurance processes in your production line.
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30 suppliersBuy Tungsten Crucibles in Bulk — Verified Supplier in China
When sourcing Tungsten Crucibles for your business, securing the right balance of quality and cost is essential. Beijing Sunstone Tungsten & Molybdenum Co., Ltd., a verified supplier based in China, offers this product with key specifications including Pure Tungsten (Sintered / Machined), W 99.95% min, density 18.0-19.0 g/cm3, and Custom diameters from 50mm to 300mm, heights 50mm to 500mm, wall thickness 3-15mm. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $500/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 8101.99, making it a staple in the Tungsten Products sector with strong demand from importing countries worldwide.
Tungsten Crucibles Specifications, Trade Terms & Pricing
Importing Tungsten Crucibles requires careful attention to shipping logistics, customs compliance, and secure payment terms. Beijing Sunstone Tungsten & Molybdenum 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 8101.99 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 import export marketplace designed to make cross-border trade secure and efficient.
About Beijing Sunstone Tungsten & Molybdenum Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Tungsten Crucibles has been verified on our platform. 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 verified manufacturers and exporters across 200+ countries. Explore similar products in the Tungsten Products category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Import Tungsten Crucibles — Shipping, Logistics & Customs
Importing Tungsten Crucibles 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 8101.99 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 Tungsten Crucibles
What is the wholesale price of Tungsten Crucibles?
The current listed wholesale price for Tungsten Crucibles from Beijing Sunstone Tungsten & Molybdenum Co., Ltd. is $500/Bags 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 Beijing Sunstone Tungsten & Molybdenum Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Tungsten Crucibles?
The supplier, Beijing Sunstone Tungsten & Molybdenum Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Tungsten Crucibles. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Tungsten Crucibles?
For international shipping and customs clearance, Tungsten Crucibles is classified under HS Code 8101.99. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Tungsten Crucibles from China?
To import Tungsten Crucibles from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Beijing Sunstone Tungsten & Molybdenum Co., Ltd.. Ensure you have the necessary import licenses for Tungsten Products products in your destination country.
Is Beijing Sunstone Tungsten & Molybdenum Co., Ltd. a verified supplier?
Yes, Beijing Sunstone Tungsten & Molybdenum Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Tungsten Crucibles?
The key specifications for Tungsten Crucibles supplied by Beijing Sunstone Tungsten & Molybdenum Co., Ltd. include Pure Tungsten (Sintered / Machined), W 99.95% min, density 18.0-19.0 g/cm3, and Custom diameters from 50mm to 300mm, heights 50mm to 500mm, wall thickness 3-15mm. 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 Tungsten Crucibles?
Beijing Sunstone Tungsten & Molybdenum Co., Ltd. offers Tungsten Crucibles with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Tungsten Crucibles the most?
Tungsten Crucibles is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Beijing Sunstone Tungsten & Molybdenum Co., Ltd. through our platform.
What certifications does this Tungsten Crucibles supplier hold?
Beijing Sunstone Tungsten & Molybdenum Co., Ltd. maintains international quality certifications. These ensure that the Tungsten Crucibles meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Tungsten Crucibles on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Beijing Sunstone Tungsten & Molybdenum 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 Beijing Sunstone Tungsten & Molybdenum Co., Ltd..
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