State system for ensuring the uniformity of measurements. Reference gauge-blocks of the 1st and the 2nd accuracy orders and working gauge-blocks of 00 and 0 accuracy classes up to 1000 mm. Methods and means for verification
Petroleum and natural gas industries. Materials for use in H2S-containing environments in oil and gas production. Part 2. Cracking-resistant carbon and low-alloy steels and the use of cast irons
