stair tread

详情

1)There are four kinds of stair treads T1,T2,T3,T4.     T1  Welded fixing and Without nosing
    T2  Bolted fixing and without nosing,easy to installation and teardown.
    T3 Welded fixing and with checkered plate nosing, can be skid.     T4  Bolted fxing and with checkered plate nosing, easy be installation,teardown and can be skid. Notes: Stair tread may be of any types of grating,the size may be up to no standard specification
 We recommended :
 Bearing bar pitch is *0,*0,*0mm.
 Cross bar pitch  is *0,*0,*0,**0mm
 Width :**5,**5,**5,**5,**5,**5,**5mm 2) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel
3)Steel grating standards:
A) China: YB/T********8
B) USA: ANSI/NAAMM (MBG*****8)
C) UK: BS********7
D) Australia: AS********8
E) Japan: JJS.