Tc bush

Buyers should prioritize Tungsten Carbide grades with a cobalt binder content typically ranging from 6% to 12%. For high-corrosion environments, a Nickel binder is preferred. Ensure the Hardness (HRA) levels are between 89 and 92 to guarantee superior wear resistance, and verify the Density (approx. 14.5-15.0 g/cm³) to ensure material purity and lack of porosity.

For high-speed rotating machinery, specify Inner Diameter (ID) and Outer Diameter (OD) tolerances within ±0.005mm to ±0.01mm. The Surface Roughness (Ra) should be polished to 0.2μm or lower to reduce friction and heat generation. Request Concentricity and Cylindricity reports to ensure the bush performs reliably under high-pressure loads without premature failure.

Tc Bushes are essential in Oil & Gas (downhole tools), Submersible Pumps, and Chemical Processing. They must function as wear-resistant sleeves or mechanical seal faces. Key functional requirements include high compressive strength, thermal shock resistance, and the ability to operate in slurry or abrasive media where traditional steel bushings would fail.

Suppliers should hold ISO 9001:2015 certification for quality management. For specific industries like Oil & Gas, look for API (American Petroleum Institute) standards compliance. Ensure the manufacturer provides a Material Test Certificate (MTC) and Ultrasonic Flaw Detection reports to prove the absence of internal cracks or defects.

Always request a pre-shipment sample for lab testing. Use Made-in-China.com's Secured Trading services to ensure payment is only released after the goods pass a third-party inspection (such as SGS or Bureau Veritas). Specifically, ask for a Hardness Test and Microstructure Analysis to confirm the carbide grain size is consistent with your requirements.

Since Tungsten is a regulated commodity, prices fluctuate with raw material market rates. Negotiate a formula-based pricing model for long-term contracts. For custom dimensions, expect a higher MOQ (e.g., 50-100 pieces) due to tooling costs; however, for standard sizes, many Made-in-China.com Gold Members offer MOQs as low as 5-10 pieces to support trial orders.

Tungsten Carbide is extremely hard but brittle and prone to chipping. Ensure the supplier uses individual plastic protective sleeves or vacuum packaging, followed by cushioned wooden crates for sea freight. For air express, specify double-walled corrugated boxes with high-density foam inserts to prevent impact damage during transit.

Check the HS Code (typically 8483.30 or 8101.99) for your specific country to determine import duties. Be aware of Anti-Dumping Duties that may apply to certain tungsten products in the EU or US. Ensure all Commercial Invoices and Packing Lists clearly state the material composition to avoid customs delays or misclassification fines.