Aluminum tube 1)material:brass steel aluminum 2)size ... 20mm4) Technical Standard: DIN7340 Tubular rivet made from tube GB-975 Pipe type rivets5) Management Certification:ISO9001:20006) ... Copper Capillary, Drawn Copper Tube,Copper Tubular Rivet, Brass Tubular Rivet, Brass Tube Products (tubular rivets,needle tube, pin connector) etc. ... Antenna, Electric Brush, Antenna, Electric Brush, etc. Aluminum tube