Welding and allied processes. Types of joint preparation. Part 1. Manual metal arc welding, gas-shielded metal arc welding, gas welding, TIG welding and beam welding of steels
State system for ensuring the uniformity of measurements. Standard reference data. Orthohydrogen, liquid and gaseous. Density, enthalpy, entropy, isochoric, isobaric heat capacities and speed of sound at temperatures from 15 K up to 1000 K and pressures up to 100 MPa
