This part specifies the requirements, test methods, inspection rules, signs, packaging, transportation, storage and contract content of aluminum and aluminum alloy hot extrusion pipes produced by split-split composite die or bridge-type composite die. This part is applicable to aluminum and aluminum alloy seamed round tubes, rectangular tubes and regular polygonal tubes for roads, bridges and construction industries.
GB/T 4437.2-2003 history
2017GB/T 4437.2-2017 Aluminium and aluminium alloy extruded tubes—Part 2:Seam tubes