This product is a replacement for general type vulcanized fiber paper abrasive disc and has obtained Chinese patent, whose number is ZL96 2 45773.3. Under the precondition of keeping the function of general type abrasive discs, we have made new improvements, in cutting some geometrical grooves on the grinding face to form strong interval grinding. It greatly enhances working efficiency and decreases grinding heat quantity. The efficiency is enhanced by times when it is specially used for removing thick rust on metals and used for grinding stone materials and cement in the building industry. Owing to the special technology for making this product. The safety and durable quality of this product are still more guaranteed. Its maximum applicable line speed is 80M/sec.