This is a basic exhaust connector construction and the cheapest.
Exhaust connector both ends fixed, with braid outside and inside the bellows
Exhaust connectors layers from inside to outside: metal braid, metal bellows, metal braid (usually it is more than one braid but it really depend on factory and client requirement)
Stainless steel exhaust flexible connector type B is more like stainless steel hose with braid outside/inside then expansion joint
Exhaust connector standard stainless steel SUS201 – SUS304 or SUS321 on request
Exhaust connectors both ends fixed, with braid outside and inside the bellows, Exhaust connectors, stainless steel exhaust flexible connector
