... Pipe mode: round pipe, rectangle pipe, flat pipe and squar 1.Pipe material: copper, aluminum, steel, stainless steel, iron 2.Pipe mode: round pipe, rectangle pipe, flat pipe ... to mount guard2. We have 15 engineers, carefully checks for every operation link.3. Our QC team with 20 members ... relationship with world’s famous HVAC & refrigeration equipment factories. Pipe Bending,Welding, Cutting, Forming