Weights to be used for design purposed only e.g. estimating loads on supports and platforms
Weights of flanges are based on the heaviest of Tube Turn; Taylor Forge; Ladish and VOGT.
Weights of valves are based on the heaviest of CRANE; PACIFIC; O.I.C; Chapaman; R.P. &Co. and VOGT
For weights of Pipe See ANSI B36.10 and DIN 2448