Rolling tolerances to BS EN 10279: 2000 for Parallel flange channels (PFC)

Designation	Property	Range	Tolerance
		mm	mm
	Height h	h≤ 65	±1.5
		65 <h≤ 200	±2.0
		200 <h≤ 400	±3.0
		400 <h	±4.0
	Flange width b	b≤ 50	±1.5
		50 <b≤ 100	±2.0
		100 <b≤ 125	±2.5
		125 <b	±3.0
	Web thickness s	s≤ 10	±0.5
		10 <s≤ 15	±0.7
		15 <s	±1.0
	Flange thickness t	t≤ 10	a –0.5
		10 <t≤ 15	a –1.0
		15 <t	a –1.5
	Heel radius r₃	All sizes	≤ 0.3 t
	Out of squareness k + k'	b≤ 100	2.0
	Out of squareness k + k'	100 <b	2.5% of b
	Web flatness f	h≤ 100	±0.5
		100 <h≤ 200	±1.0
		200 <h≤ 400	±1.5
		400 <h	±1.5
	Straightness q_xx	h≤ 150	±0.3% L
		150 <h≤ 300	±0.2% L
		300 <h	±0.15% L
	Straightness q_yy	h≤ 150	0.50% L
		150 <h≤ 300	0.30% L
		300 <h	0.20% L
Standard	Length L	All	–0	+100
Alternative Standard (by agreement)	Length L	All	±50
Mass per unit length	Kg/m	h≤ 125	±6.0%
Mass per unit length	Kg/m	125 <h	±4.0%