Explosion-proof floor drains are generally used in underground bunkers of basements and public facilities to prevent shock waves from entering the bunkers through pipelines during explosion. Explosion-proof floor drain is usually made of cast iron, which has a common circular appearance, larger volume and heavier weight.
Ordinary floor drains have only a single drainage function under normal circumstances. Now some floor drains have been greatly improved in material, workmanship and deodorization.