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    Fasteners
 
 
Selection Of Fasteners Is Crucial Insuring The Entire Project Enjoy Maximum Life. Fasteners Used To Fix The Roof Sheeting, Must Be Chosen To Last As Long As The Life Of Roofing Steel Sheet.
 
The Sdst (Self Drilling Self Taping) Screws With Low Carbon Epdm Washer Should Meet The Standard Of As3566 Class3, Part2 2002, Or Astm2247 Or Din50018 Are Recommended For The Fixing Of Roofing Sheet.
 
    Setting of Fasteners Screws
Fasteners With Sealing Washers Should Be Tightened Only Until The Washer Is Gripped Trimly Enough To Provide Weather Tight Seal. The Fasteners Should Not Be Over-Tightened Because This May Split The Sealing Washer Or Deform The Sheet, Either Of Which Could Lead To Water Penetration. Special Care Is Required In Vally Tixing Because There Is No Flexibility With The Sheet Hard Against The Runners.
 

    Screw Size

 
(a) For Crest Fixing 12x14x45x/50/55/60/65/68  
  12x24x50x65/68
(b) For Vally Fixing 12x14x20/25/30/35/38
  12x24x20x25/45/175
(c) For Wall Cladding 12x14x20   12x24x20x25/32
  10x16x16/22
(d) For Stitching 10x12x20  
 

10x16x16/19

 
 
 
   
 
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