... designs of our elliptical trainersMaterial: component detailsUpright column:steel pipe with diameter of 114 mm, wall thickness of 2.5 mmConforming ... to the European standards of EN1176Iron part:steel pipe with diameter of 60 mm, 48mm, 38mm, 32mm, 28mm, wall thickness ... processing, all the corners are round and smooth. All screws, with cup heads or T heads, are made of stainless steel 316 ...