Petroleum and natural gas industries. Drilling and production equipment. Part 3. Running tools, pulling tools and kick-over tools and latches for side-pocket mandrels. General technical requirements
Safety of household and similar electrical appliances. Part 2-55. Particular requirements for electrical appliances for use with aquariums and garden ponds
State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for instruments measuring surface roughness parameters Rmax and Rz in range 0,025 - 1600 mkm
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