1.Commodity: Elevator Guide Rails
2.Standard: YB/T157--1999
3.Specification:Q235A
4.Size & Unit weight.
Size	b	h	k	n	c	g	Section area (cm2)	Unit weight (kgs/mtr)
T75	75	64	14	32	7.5	7	13	10.205
T78	78	58	14	28	7.5	6	11.752	9.225
T89	89	64	20	35	10	7.9	17.873	14.03
T90	90	77	20	44	10	8	20.453	16.056
T114	114	91	20	40	10	8	24.312	19.085