Rubber Ball features: rubber ball ideal sealing effect, the general temperature range of -40 to 250 degrees. Rubber ball, nitrile rubber ball, silicone ball, fluorine rubber ball with high temperature, weather resistance, chemical resistance and other characteristics. National standard rubber ball Specifications Description: 1) Rubber Ball specifications are generally expressed as: Diameter (mm), such as: rubber ball size 8, wherein 8 represents a rubber ball diameter of 8 mm (mm); 2) Our complete rubber ball specifications including national standard sizes and non-standard sizes can also be customized, and will not charge mold fee. Rubber ball more varieties to meet the requirements of a variety of cleaning pipes, from normal maintenance to precipitate after clearing dirt. These balls can be used for the different requirements of the various machines. Imports of ball mill rubber test methods: 1) the appearance of quality inspection: the appearance of visual method. Rubber ball does not allow the existence of a general porosity, cracks, impurities, bubbles; the surface should be smooth and clean. Type surface defects and quality requirements should not exceed the limit prescribed national standards GB 3452.2-87, use the occasion of the appearance of quality requirements into N-and S-Class. 2) can be determined dimensional inspection of their section, diameter according to specific requirements. Size according to specifications, respectively, using precision to meet the requirements of vernier caliper, ruler or tape measure; to move the microscope, projection microscopes and other optical instruments to measure. Dimensions and tolerances must comply with national standards or the corresponding provision of the required size, hydraulic systems and components according to GB 3452.1-92 standards for the implementation of a rubber ball with the general dimensions and tolerances and aerospace. 3) The physical and mechanical properties of the finished test according to different requirements for the finished product can be physical performance test. Rubber ball of hardness, tensile properties, compression set, tensile set, hot air aging, compression stress relaxation, "ring test" liquid density tests according to GB / T 5720-93 standard resistance test. 4) testing of finished product packaging labeling, packaging, storage, etc. can be GB / T 5721-93 standard rubber sealing products labeling, packaging, transportation, general provisions store execution. 3) The physical and mechanical properties of the finished test according to different requirements for the finished product can be physical performance test. Rubber ball of hardness, tensile properties, compression set, tensile set, hot air aging, compression stress relaxation, "ring test" liquid density tests according to GB / T 5720-93 standard resistance test. 4) testing of finished product packaging labeling, packaging, storage, etc. can be GB / T 5721-93 standard rubber sealing products labeling, packaging, transportation, general provisions store execution. OTP- professional rubber ball manufacturer, we sell a range for the country Continent: Shanghai rubber balls, rubber balls, Hangzhou, Nanjing and rubber balls, rubber balls, Wuxi, Ningbo, rubber balls, rubber balls, Suzhou, Changzhou, rubber balls, Wenzhou?????? rubber ball? Shaoxing rubber ball? Xuzhou rubber ball? Nantong rubber ball? Jinhua rubber ball? Jiaxing rubber ball? Yancheng rubber ball? Huai'an rubber ball? Taizhou rubber ball? Huzhou rubber ball? Lianyungang rubber ball? Zhenjiang rubber ball? Zhoushan rubber ball? Lishui rubber ball? Taizhou rubber ball? Suqian rubber ball?. . . . . .