Can Tianjin's bus card be used in Beijing?

not available......

At present, it is not possible. You need to use the Beijing-Tianjin One-Card to use it in Beijing. Ordinary bus cards are not yet available.

of course can. Now, all Beijing-Tianjin-Hebei buses have achieved one-card, that is, Hebei and Beijing-Tianjin have realized the interoperability of ground bus cards.

Logically, it is impossible. You can search Beijing's bus network on Baidu and check in detail.

It can’t be used, the intercity bus has not yet developed to that level

Of course, the Tianjin card cannot be used in Beijing.