Drill pipes and other elements of drilling equipment for petroleum and natural gas industries. Part 2. Basic parameters and inspection of thread shouldered connection. General technical requirements
Steel pattern plates with changeable metal inserts for moulding boxes having inside dimensions 1000x800 mm for moulding machines without turn of half mould without squeezing. Design and dimensions
Medical electrical equipment. Part 2-54. Particular requirements for basic safety and essential performance of the X-ray equipment for radiography and radioscopy
