About Chengdu Woco Carbide Industry Co., Ltd. - Tungsten Products Supplier in China

China‑based Chengdu Woco Carbide Industry Co., Ltd. currently lists 32 active products spanning tungsten carbide, heavy alloys and related tooling. The catalogue includes alloy powders, tungsten carbide rods, balls, knife blades, drawing dies, inserts for chuck jaws (HS 8209.00), wire drawing dies (HS 8207.20), heavy‑alloy balls WNiCu (HS 8101.99), spray nozzles, single‑hole tubes (HS 8101.99), strips, crusher tips (HS 8103.00), grinding ball bearings (HS 8482.99), thermal spray powders (HS 3824.30 and 3824.99), and a range of bearing and bush components such as YG15 bush bearings (HS 8483.40). Each item is described with its material composition, for example WC‑Co grades YG6, YG8, YG15 or WC‑12Co powders, and many entries specify the exact HS‑code family. The product set also covers specialized items like tungsten carbide spray nozzles, tube drawing dies and carbide tips for drilling inserts. Buyers can therefore find both raw forms (powders, granules, grit) and finished components (balls, bearings, knives) within a single supplier profile.

The listed products are organized under broader categories such as Tungsten Products, Bearing, Dies & Mouldings, Coatings, Metallic Elements, Nozzle, Tungsten Ore and Drilling Machines & Tools. HS codes range from 2849.90 for tungsten carbide powders and grit to 8482‑10 for sintered carbide bearing balls, reflecting the typical customs classification for raw and semi‑finished carbide items. Material descriptions consistently mention cobalt or nickel binders, with typical binder percentages of 6‑15 % and tungsten contents of 85‑99 %. This level of detail matches standard industry practice for specifying cemented carbide grades used in high‑precision machining and wear‑resistant applications.

Product Range and Specialties of Chengdu Woco Carbide Industry Co., Ltd.

The catalogue offers a full spectrum of cemented carbide forms: coarse and fine powders (WC‑12Co, WC‑6Co, WC‑12Co‑4Cr), granules and grit for thermal spray processes, and shaped components such as rods, strips, tubes, balls and bearing elements. In the global market, tungsten carbide powders are commonly supplied in particle size ranges from <10 µm up to 150 µm, with purity levels of 99.9 % W and cobalt binder contents tightly controlled to meet ASTM B381 or ISO 9001 quality systems. Typical grades referenced in the list - YG6, YG8, YG15 - correspond to hardness values of 1 800‑2 100 HV and wear‑resistance indices used in automotive, aerospace and tooling sectors. Bearing components such as YG15 bushings and carbide ball bearings are usually produced to ISO‑13369 tolerances for dimensional accuracy and to DIN‑EN‑12529 surface finish standards. Thermal spray powders (HS 3824.30/3824.99) are generally supplied in 25 kg or 200 kg bags, with particle size distributions (D50) of 20‑45 µm to fit standard plasma‑or‑HVOF spray equipment.

Trade and Export Information - Chengdu Woco Carbide Industry Co., Ltd.

China remains one of the world’s largest exporters of cemented carbide, with the majority of shipments destined for Europe, North America, Japan and South Korea, where automotive, aerospace and precision‑machining industries consume the bulk of the product. HS‑code families 8207, 8209, 8482, 8483, 2849 and 3824 are routinely inspected by customs for proper declaration, and many importers require the supplier’s mill test report, chemical analysis and compliance with ISO 9001 and ISO 14001 environmental standards. Typical packaging for bulk powders and granules includes double‑lined 25 kg paper bags placed in wooden crates, while finished components are shipped on Euro‑pallets with moisture‑barrier liners to prevent oxidation of the cobalt binder. Common Incoterms used by Chinese carbide exporters are FOB Chengdu or CIF destination port, with freight forwarders handling the special handling required for heavy, high‑density items such as tungsten alloy balls (density ≈ 19 g/cm³).

Sourcing from Chengdu Woco Carbide Industry Co., Ltd. - Buyer Guidance

When sourcing from Chengdu Woco, buyers should request a recent mill test report that details chemical composition, binder percentage, hardness (HV), grain size and any heat‑treatment specifications. For powders and grit, a particle‑size distribution curve (e.g., ASTM B822) and bulk density measurement are standard verification items. Buyers of shaped components should confirm dimensional tolerances, surface finish (Ra) and the applicable bearing grade (e.g., YG15 for bushings) against ISO‑13369 or DIN‑EN‑12529. It is advisable to verify the supplier’s ISO 9001 certification and, if required by the end market, CE marking or ASTM B381 compliance before placing a large order. Typical minimum order quantities range from 5 kg for specialty powders to 10 pcs for precision‑machined inserts, with lead times of 4‑6 weeks for standard grades and up to 8 weeks for custom alloys.

What tungsten carbide grades does Chengdu Woco offer and how are they identified?

The catalogue lists grades such as YG6, YG8, YG15 and WC‑12Co, each defined by a specific tungsten‑to‑cobalt ratio (e.g., YG8 ≈ 85 % W, 15 % Co). The grade is indicated in the product description and aligns with industry standards for hardness and wear resistance.

Which HS codes apply to the different carbide products?

Common HS codes in the list include 8207.20 for wire drawing dies, 8209.00 for inserts and tips, 8482.10/8482.99 for bearing balls, 8101.99 for heavy‑alloy balls and tubes, 2849.90 for powders and grit, and 3824.30/3824.99 for thermal spray powders.

What documentation should I request before purchasing powders or granules?

Ask for a recent mill test report, particle‑size distribution (D50, D90), bulk density, chemical analysis and proof of ISO 9001 or ASTM B381 compliance. These documents confirm purity, binder content and suitability for spray‑coating processes.

Are there standard certifications required for tungsten carbide bearings?

Buyers typically require ISO 9001 quality‑management certification and may request compliance with ISO 13369 for bearing dimensions or DIN‑EN‑12529 for surface finish. CE marking is also common for European market entries.

What packaging is used for bulk carbide powders?

Bulk powders are usually packed in double‑lined 25 kg paper bags, placed inside wooden crates with moisture‑barrier liners. This protects the material from humidity and mechanical damage during sea freight.

What are typical lead times and minimum order quantities?

Standard grades have lead times of 4‑6 weeks, while custom alloy formulations may require up to 8 weeks. Minimum orders are typically 5 kg for powders and 10 pieces for machined inserts or bearing components.

How are tungsten carbide spray nozzles classified for customs?

Spray nozzles fall under HS 8209.00 (parts of machine tools) and are examined for material composition (WC‑Co) and conformity with relevant safety standards before clearance.