Movement of Gas cylinders as RTP material

Hi

I have a business scenario where my client uses to procure gas cylinders with filled Oxygen gas. The filled gas cylinders are received into warehouse. After that those cylinders are issued to consumption. After the gas has been consumed empty cylinders are returned to warehouse. After that those empty cylinders are returned to vendor from warehouse. Delivery charge for returning those empty cylinder to the vendor is borne by my client. As per my knowledge I can track those cylinders as Returnable transport packaging material. And I can receive these cylinders into warehouse in MIGO through 501 M Movt type(GI receipt to RTP). But I am not able to find out how issue of these cylinders to consumption and return of empty cylinders to warehouse to be mapped in SAP.

Can anybody tell me how to map this business scenario in SAP and also how to book the delivery charges into SAP for returning empty cylinder to vendor.

I will reward point if useful

thanks

Amitava