We strictly according to GB "GB/T18838.3-2008 high carbon steel shot and sand", American steel casting association "SFSA20-66 cast steel abrasive standard", American motorcar engineer association "SAE standards," J827 cast steel shot in Chinese Black people republic of metallurgical industry "YB/T5149-93 cast steel shot", the U.S. army standard "MIL - S - 851 cleaning and strengthen with metal kind steel grit and steel shot standards" and "international organization for standardization ISO11124-3 standard high carbon steel shot cast. Steel grit plastic woven sack packaging, packaging bags which steel grit, steel grit wood pallet packaging, paper bag steel grit packaging, bucket type steel bolus packaging.