GB ISI product is manufactured as per IS-9537 Part–II : 1981.“GB” ISI approved by Bureau Of Indian Standards (BIS) having licence no. CM/L : 9190581. GB ISI is stamped on every meter of Conduits.
Test to Check Rigid Steel
Conduits Confirming to IS : 9537 (PART-II) 1981
Sr. No.
Name of Test
Mode of Testing
1
Inspection of Surfaces & Edges
Visual Examination (By Normal or Corrected Vision Without Magnification)
2
Dimensional Check
For Maximum OD by GO Gauges and minimumOD by NO GO Gauges
3
Wall Thickness
Measured with the help of Micrometer (Accuracy equal to or more than 0.01 mm)
4
Screw Threads
1. Length Measured by vernier calipper 2. Profile of threads by GO & NO GO gauges
5
Bending Test
By bending the samples on Bend Test Apparatus & testing the samples for deformity and cracking of original material or protective coating as mentioned in BIS 9537 Part I & II
6
Compression Test
With the help of compression test apparatus
7
(For checking the effect of external influences)
(For checking the effect of external influences) With the help of chemicals as prescribed in IS: 9537 Specifications for medium protection of Rigid steel conduits for the effect of external influences or Anti-Corrosive effectiveness of the protective coating
8
Marking
A. Trade Mark B. Country of Mfg. C. Nominal Size of Conduits
9
Durability of Marking
Compliances tested by method as mentioned in IS : 9537 Specifications