by calculating I=1/12bh3
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Heavy weight mild steel with screwed fittings bspt. == Normally galvanized pipes are not used for steam. Mild steel with screwed or welded fittings are the norm. Pressure and temperature are very important factors to be considered in what type of materials to be used. Steam even at low pressures can be extremely dangerous. Answer In hign temperature application nomally the alloy steel pipes are used ANSWER: Mild Steel Seemless pipes, thickness dependent on the pressure rating to be used.
1018 is the number "one thousand and eighteen."It is also the name for 1018 steel which is the most common low-carbon mild steel alloy in many uses, including structural steel.
If its general purpose mild steel square bar then its 2.01 kg/m. So 12.06kgs all together.
If you Google "mild steel density" you find that a value of 7.85 is not uncommon.If you calculate the volume of steel in your pipe (Google "volume of cylinder") calculate the volume of the OD cylinder and subtract the volume of the ID cylinder and multiply that by the density you get the mass of the pipe multiply that by the gravitational constant (Google "gravitational constant") of your location to get the weight.Or you could just Google "ms pipe weight calculator" (see the Sources and related links below) find the pipe shape and put in your values, hit "Calculate" and get the answer 34.6889 lbs (which has far too many significant figures (converted to kg by Google as 15.7 kg still with one significant figure too many as two of the original dimensions only had two significant figures)
gear with shaft dia40mm length 230 teeth 14 shaft dia 25mm width 6.5mm length 168mm