STANDARDS

We certify our products based on the ASTM (American Society for Testing and Materials) regulations; we guarantee their dimensions and properties.

  For raw materials   
  • Hot rolling: ASTM A 1011
  • Cold rolling: ASTM A 1008
  • Galvanizing: ASTM A 653
  For tube manufacturing    
  • ASTM A 500
  • ASTM A 513
  • ASTM A 787
Laboratorio de calidad Prolamsa
MECHANICAL PROPERTIES OF THE STEEL ASTM A-513 ASTM A-500
Commercial Quality High Resistance Round Tubes Square and rectangular
Type 1a, 1b and 2 HSLA G50 Grade A Grade B Grade C Grade A Grade B Grade C
Tension effort,
Min, Psi [MPa]		 42 000
[290]		 65 000
[448]		 45 000
[310]		 58 000
[400]		 62 000
[425]		 45 000
[310]		 58 000
[400]		 62 000
[425]
Yield effort,
Min, Psi [MPa]		 30 000
[207]		 50 000
[345]		 33 000
[230]		 42 000
[290]		 46 000
[315]		 39 000
[270]		 46 000
[315]		 50 000
[345]
Elongation in 2 inches
[50mm], min%		 15 22 25 23 21 25 23 21
CQ HR GA GB GC GA GB GC

* : Typical Values. 
1a: A.W.H.R. “as welded” from hot-rolled steel (with mill scale).
1b: A.W.P.O. “as welded” from hot-rolled pickled and oiled steel (mill scale removed).
2: A.W.C.R. “as welded” from cold-rolled steel.