Pipe Die cast powder can strengthen the inoculationeffect,at the meantime also can eliminated the blowhole andpinhole on the cast tube surface. As the pipe mold after a
long time use the inside surface will Cracked seriously .Adda little specified volume zinc powder and Si-Al powderwhich can help solve the difficult problem of decannulation,the pipe die cast powder also can do the inoculation effectfor 3 times,and extend the die mold using life.
