Metallic materials - Brinell hardness test - Part 2: Verification and calibration of testing machines (ISO/DIS 6506-2:2013); German version prEN ISO 6506-2:2013
Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells (ISO 11960:2011); English version EN ISO 11960:2011, only on CD-ROM— 292 стр.
Metallic materials - Brinell hardness test - Part 2: Verification and calibration of testing machines (ISO 6506-2:2014); German version EN ISO 6506-2:2014— 24 стр.
Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells (ISO 11960:2014); English version EN ISO 11960:2014, only on CD-ROM— 282 стр.
