華井氮化硅升液管與鑄鐵材料相比熱傅導性小，因此其保溫性能優越，從而可以防止低壓鑄造時鋁液溫度降低凝固。

采用氣壓燒結獲得高密度，升溫時仍可以保證高機械強度，從而在低壓鑄造時，能有效規避因荷重和強度不夠所導致的破損及漏氣風險。

不易粘鋁，可以減少管壁結渣物，使日常維護更加方便。

Comparing with cast iron materials,Huajing silicon nitride riser tube for low pressure die casting has low heat conduction,its super heat preservation can prevent the temperature reducing of aluminum solution in low pressure casting.We use the way of GPS to get high density,which makes it possible to keep high mechanical strength when temperature rises. It will reduce the risk of air leakage and damage if load and strength are weak It is not easy to adhere aluminum, so it makes daily maintenance more convenient.