Beth yw'r ystodau uchder nodweddiadol ar gyfer dur sianel PFC Awstralia?

Australian PFC channel steel has standard height ranges (measured from web top to bottom) from 75 mm (PFC 75) to 400 mm (PFC 400). Common sizes include PFC 100 (100 mm height), PFC 200 (200 mm height), PFC 300 (300 mm height), and PFC 350 (350 mm height). AS/NZS 3679.1 specifies strict height tolerances: ±1.0 mm for heights ≤150 mm, ±1.5 mm for 151–300 mm, and ±2.0 mm for >300 mm. Mae'r goddefiannau hyn yn sicrhau cydnawsedd â chydrannau parod (ee, bolltau, cromfachau) a pherfformiad cario llwyth cyson. Er enghraifft, rhaid i sianel PFC 200 gynnal ei uchder 200 mm i ffitio i mewn i fraced trawst a gynlluniwyd ar gyfer safonau adeiladu Awstralia, gan osgoi oedi gosod.