Aluminum tubing Standard Met: GB/T 1804:2000 eqv. ISO 2768-1:1989 Aluminum extrusions play an important role in ... spectrometer analysis.*Tolerance: GB/T 1804:2000 eqv. ISO 2768-1:1989*Available machining: cutting, bending, turning, milling, holes ... anodizing, bright dipping, paining, powder coating, etc.*Major products: Tubing, heat sink, decorative profile, display stand, construction profile and ...