In line cleaning, ordinary steel after sandblasting derusting process commonly, can remove rust, scale and other sundry. Stainless steel will be carried out prior to pickling passivation sand blast cleaning, remove oil surface may appear, the surface roughness reaches a certain requirements, or to achieve a certain process or reduce the reflection surface grinding surface. Generally USES RZG dust-free garnet sandblasting abrasive (natural silicon carbide). RZG dust-free garnet sand is a kind of high-grade pure natural nonmetallic sandblasting abrasive, choose from the high quality iron and aluminum pomegranate rock ore, high hardness, high density, good toughness. It has a sharp Angle and the sharp edge of toughness. According to the highest quality standards for processing the RZG dust-free pomegranate rational distribution of grain size, less dust. Content of soluble salt (chloride) and electrical conductivity is extremely low, do not contain free silicon, harmful ingredients such as heavy metals, meet iso11126. Iso11127. As well as PSPC specification requirements, meet the most stringent industrial and military technical requirements. RZG dust-free garnet sand can deep holes and the rough parts to clean, thoroughly remove scale, rust, dirt such as soluble salt.