LAX-Beijing-New Delhi

I am an Indian citizen travelling from Los Angeles to New Delhi via Beijing (layover of 2.5 hours). I have a valid US visa. Do I need to apply for any transit G?
From Los Angeles Intl. (LAX) To Capital Intl. (PEK) Air China 988 (2:20pm to 6:10pm+1)
From Capital Intl. (PEK) To Indira Gandhi Intl. (DEL) Air China 947 (8:40pm +1 to 1:35am +2)