Import Bottom-Roller Graphite Carbon Sleeve — Buy in Bulk from Supplier in China

The Bottom-roller graphite carbon sleeve supplied by Shandong Zheng Tong Yuan International Trade Co.,Ltd. is a high-temperature component designed for roller applications in steel and cement mills. The supplier lists a bulk density of 1.65-1.70 g/cm³ and a compressive strength ranging from 31 to 40 MPa. Specific electrical resistance is reported at 8 µΩ·m, with ash content limited to 0.5 % and total carbon plus impregnated matter at 98 %. These figures match typical requirements for carbon sleeves operating under normal to high temperature conditions.

The sleeve is fabricated from fine-grained graphite impregnated with a phenolic binder, a common formulation that delivers both rigidity and thermal stability. In the industry, similar sleeves are classified as grade G-2, offering a hardness of about 1500 HV and an operating temperature limit near 1200 °C. Typical dimensions for such sleeves include an inner diameter of 30 mm and an outer diameter of 50 mm, with a tolerance of ±0.2 mm. Standard packaging is bulk palletised, protected from moisture to preserve the low ash content.

These sleeves are used by manufacturers of large-scale rolling mills, cement clinker coolers and other equipment where wear resistance is critical. Importers usually request FOB shipping from the port of Qingdao and arrange payment by irrevocable L/C, though exact terms should be confirmed with the supplier. Because the supplier’s response rate is currently zero, buyers are advised to verify production capacity and request a material test certificate before placing an order.

Shandong Zheng Tong Yuan International Trade Co.,Ltd. is located at Room No.404, No.6 Shungeng Road, Lixia District, Jinan 250014, Shandong Province, China. The company operates as an imported-tier supplier and holds a harbor trust tier on the platform, indicating a basic level of verification. Its public profile shows a response rate of 0 % and no recorded average response time, suggesting that communication may require proactive follow-up. The firm lists the Bottom-roller graphite carbon sleeve as its primary offering.

No additional certifications, production capacity figures or client references are provided in the listing, so buyers should request relevant test reports and factory capability documents directly. The supplier’s focus appears to be on bulk sales of carbon-based wear components for heavy-industry applications. Potential partners are encouraged to assess the supplier’s quality management system before committing to large volumes.