aluminum alloy casting 1.Service life is 20 years 2.Surface spraying materials: ... .size:diameter is 200mm 1.This product use low pressure casting technology formation2.No stomata and density high3.Use 24 hours ... , life can reach 20 years4.This product by casting, machining, grinding, drilling, deburring, spraying, welding, inspectionetc, each step is ...