Tuubbada nadaafadda ee birta ah

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Codsiga alaabta:
bioengineering, cuntada, caanaha, dawooyinka, biyaha la sifeeyey, injineernimada elektarooniga ah, warshadaha fiber kiimikada, warshadaha kiimikada, waraaqaha samaynta, biirka, gaaska saafiga ah sare, qurxinta iyo warshadaha kale.
U hoggaansanaanta caadiga ah:

ASTM A270 EN10357

DIN 11850

JIS G3447

ISO 2037

EN 1035T

AS15281

QB/T 2072.3