Bhiwandi Station Fire Officer Rajesh Pawar said that the fire broke at about 5 pm at Wabla compound today evening after which three fire tenders were rushed to the spot.
The fire was put out within a couple of hours but two workers aged around 19 were killed and their bodies were charred beyond recognition.
A postmortem would be conducted at the IGM Hospital at Bhiwandi, he said.
The cause of fire is still under investigation, the fire officer said.