UPN
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Umuyoboro mwiza w'icyuma gishyushye gishyushye gikozwe mu cyuma cya Carbon U Beam C Channel Icyuma cy'umukara gikozwe mu cyuma cya Upn Channel
Imbonerahamwe igezweho igaragaza ibipimo ngenderwaho by'i BurayiImiyoboro ya U (UPN, UNP),
Ibisobanuro, imiterere, n'ingano y'imitako ya UPN, bikorwa hakurikijwe ibipimo bikurikira:
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DIN 1026-1:2000
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NF A 45-202:1986
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EN 10279:2000– Kwihanganirana
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EN 10163-3:2004– Imiterere y'ubuso, Icyiciro cya C, Icyiciro cya 1
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STN 42 5550
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ČTN 42 5550
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TDP: STN 42 0135
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