Through adopting the annular runner and introducing the ingate in radial direction

setting the overflow feeding riser in both sides of the flange

gating system was designed.The size of sprue、runner and feeding riser were determined by the shrinkage modulus method

and the pouring cup adopted a light anti-splash standard style recommend by DISA molding line.With the gating system and riser feeding technology

the tee products were produced in the vertical molding line.The practical production shows that the intrinsic quality of castings exhibits desirable with absence of shrinkage porosities（holes）

and the casting qualified rate reaches 96%

and the yield production rate is 68%.