Size and dimension
Size: 13 mm x 13 mm, 25 mm x 25 mm, 30 mm x 30 mm
Wall thickness: 1,0 mm - 1,5 mm
Size standards
ČSN 42 6935, DIN 2395, 594 11, GOST 8639
Material
ČSN steel 11 305, 11 320, 11 343, DIN St, GOST Vst
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