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Tower
Bolt is a rod-shaped bolt for fastening a door or the like, attached to one
side of the door at the edge and sliding into a cylindrical casing on the frame
of the opening. These may be ferrous or non-ferrous.
For
bolts made of ferrous metals:
- Barrel
Tower Bolts:
a) Mild steel barrel
tower bolts with mild steel barrel and mild steel bolt.
b) Mild steel barrel tower bolts with mild steel barrel and cast iron bolt.
- Semi-Barrel
Tower Bolts:
a) Mild steel
semi-barrel tower bolts, full cover with mild steel sheet pressed barrel and
mild steel bolt.
b) Mild steel semi-barrel tower bolts, full cover with mild steel sheet pressed
barrel and cast iron bolt.
c) Mild steel semi-barrel tower bolts, open cover with mild steel sheet pressed
barrel and mild steel bolt.
d) Mild steel semi-barrel tower bolts, open cover with mild steel sheet pressed
barrel and cast iron bolt.
- Riveted
or Spot Welded Tower Bolts:
a) Mild steel tower
bolts riveted type with back plate and mild steel bolt and open staple.
b) Mild steel tower bolts riveted type with back plate and cast iron bolt and
open staple.
- Skeleton
Tower Bolts:
a) Mild steel
skeleton tower bolts with steel sheet pressed plate and staples and mild steel
bolt.
BIS is a statutory
institution established under the Bureau of Indian Standards Act,1986 to promote harmonious development of the
activities of standardization, marking and quality certification of goods
and attending to connected matters in the country.
Tower Bolts – Ferrous Metals product
has been specified in IS 204 (Part 1) : 1991 by
Bureau of Indian Standards.
Scope
This
standard (Part 1) lays down the requirements for tower bolts made of ferrous
metals.
References
IS 210 : 1978 Grey iron castings
IS 513 : 1986 Cold rolled low
carbon steel sheets and strips
IS 1068 : 1985 Electroplated
coatings of nickel plus chromium and copperplus nickel plus chromium on iron
and steel
IS 1079 : 1988 Hot rolled carbon
steel sheet and strip
IS 1378 : 1987 Oxidized-copper
finishes
IS 1573 : 1986 Electroplated
coatings of zinc on iron and steel
IS 1977 : 1975 Structural steel
(ordinary quality)
IS 6760 : 1972 Slotted countersunk
head wood screws
Raw Material :
As per Cl.4 and Table 5 of IS 204 (Part 1): 1991
Possible Tests in a day :
Manufacture
(Cl. 5), Dimensions (Cl. 6), Finish- Coating
thickness, as applicable (Cl. 7)
Following are the Testing Parameters :
·
Material
·
Manufacture
·
Dimension
·
Tolerances
·
·
Finish
o
Bright
finished/ Bright stain finished
o
Test
for Ni-Cr plating
o
Test
for Copper oxidizing
o
Test
for Zinc plating
BIS
Certification in India
It is always better to consult with experience team such as ERCS Pvt. Ltd. for smooth certification process.
For more information, please feel free to contact us at info@elitasrcs.com or call at +91-9076611770 / +91-9076611766.
