Guth Katalog 2017 - Update 08/22

GUTH VENTILTECHNIK | FLUID PROCESS GROUP technical information Expansion of stainless steel tube (straight pipe) Surface finish according to DIN EN 10357 (formerly DIN 11850) Modality Heat-treated Surface and surface finish Short mark for the type Innfer surface Seam area inside Outer surface and seam area made of cold rolled steel a welded Inner seam flattened not heat-treated Ra < 0.80 µm pickled and passivated Ra < 1.60 µm pickled and passivated pickled and passivated CC grinded Ra < 1.00 µm CD made of cold rolled steel a welded Inner seam flattened heat-treated Ra < 0.80 µm pickled and passivated or blank annealed Ra < 1.60 µm pickled and passivated or blank annealed pickled and passivated or blank annealed BC grinded Ra < 1.00 µm BD a Made of cold rolled material according to EN 10028-7:2007, chart 6, surface finish 2B or 2R Expansion of length per 10 m Increase of temperature