Shell hte tube heat exchanger ni hpe bungli law law hta grai lang ai majaw, shanhte a bungli galaw ai lam grai law ai hte kam mai ai lam ni nga ai:
Chemical industry: n-gun rawng ai ammonia, sau hpe gram lajang ai, etc. zawn re ai n-gun rawng ai lam amyu myu hta katsi ai (sh) katsi ai arung arai ni a matu jai lang ai.
Petroleum hpaga lam: sau n-gun n rawng ai sau ni hpe shawng nnan lang ai hte hka ja na matu jai lang ai.
Lusha hpaga lam: malu masha galaw shapraw ai lam hta katsi ai (sh) katsi hkra galaw na matu jai lang ai, ga shadawn, hkaulan mam hpe n-gun dat ai, ntsin hpe n-gun dat dat ai, etc.
Power hpaga lam: wan jak ni hta lang nna turbine kaw na pru ai (sh) kaga ladat media ni hpe katsi shangun ai.