Dhuumaha birta ah ee aan cillad lahayn
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Dhuumaha Biraha ee aan Xurmada lahayn ee Warshadaha
Tuubooyinkayada birta ah ee aan toosnayn waxay waafaqsan yihiin heerar kala duwan oo kala duwan, sida ASME B16.9, ISO, API, EN, DIN BS, JIS, iyo GB, iwm. waxaana si weyn looga isticmaalaa warshado badan, sida Batroolka, Korontada, Gaaska dabiiciga ah, cuntada, dawooyinka, kiimikooyinka, samaynta maraakiibta, samaynta waraaqaha, iyo biraha, iyo wixii la mid ah.
