Steel gas cylinder is used to store fire extinguishing agent. We use cold rolled steel DC01 with good ductility. Once the cylinder is deformed or damaged, please do not use fire extinguisher to avoid danger. There are many models, please feel free to contact us if you need. Specification and dimension table Specification2kg4kg5kg8kg Diameter(mm)110130150160 Height(mm)310420440530 Link Bottle TthreadM30脳1.5 Factory environment Q1: How does your factory do regarding quality control? A1: Quality is the priority. We always attach great importance to quality controlling from the very beginning to the very end. Q2: How about your after-sale service锛?/strong> A2: One year warranty.Fire Extinguisher Cylinder factory website:http://www.anbaoff.com/fire-fighting-equipment-accessories/fire-extinguisher-cylinder/