GASSCO Standard To Meet

ASTM A615M-Grade 60 and ISO-RB500

Dimensions,masses and tolerances    
  Cross Sectional  Weight per meter (in Kg/m)
  Area (in mm2) Permissible      
F Size Nominal Deviation Min. Nominal Max.
32 804.2 +/- 4% 6.061 6.313 6.566
25 490.9 +/- 4% 3.699 3.853 4.007
20 314.2 +/- 5% 2.343 2.466 2.589
18 254.5 +/- 5% 1.898 1.998 2.097
16 201.1 +/- 5% 1.499 1.578 1.657
14 153.9 +/- 5% 1.148 1.208 1.269
12 113.1 +/- 5% 0.843 0.888 0.932
10 78.5 +/- 5% 0.586 0.617 0.647
Physical Characteristics                
Yield Strength Min 500 N/mm2 (Mpa)        
Tensile Strength Min 620 N/mm2 (Mpa)        
% Elongation Min. 14% over a Gauge Length = 5D mm.    
Bending Test F Size Mandrel diameter F Size Mandrel diameter
10 32 mm. 18 90 mm.
12 42 mm. 20 100 mm.
14 49 mm. 25 125 mm.
16 56 mm. 32 200 mm.
Deformation                  
  Crescent Rib Longitudinal Rib     Spacing (in mm.)
  Height (in mm.) Width (in mm.) Height (in mm.) Width (in mm.) Between Ribs
F Size Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
32 2.08 3.20 2.97 3.84 1.60 4.48 2.56 6.40 16.00 22.40
25 1.63 2.50 2.32 3.00 1.25 3.50 2.00 5.00 12.50 17.60
20 1.30 2.00 1.86 2.40 1.00 2.80 1.60 4.00 10.00 13.60
18 1.17 1.62 1.67 2.16 0.90 2.52 1.44 3.60 9.00 12.60
16 1.04 1.44 1.49 1.92 0.80 2.24 1.28 3.20 8.00 11.20
14 0.91 1.26 1.30 1.68 0.70 1.96 1.12 2.80 7.00 9.80
12 0.78 1.08 1.11 1.44 0.60 1.68 0.96 2.40 6.00 8.40
10 0.65 0.80 0.93 1.20 0.50 1.40 0.80 2.00 5.00 7.90