Hi - have short spools 6 & 8" to be casted from A494 CW6MC with both ends formed into 600# rated flanges. This material is not listed in B31.3, II D, B16.5, B16.34
From ASTM A494 i can get the tensile & yield values but struggling to elevated temperature allowables & P/T ratings.
What options do...
Thank you all for your input, its always good to hear from like minded ppl.
Design pressure of the pipeline is 12 bar, hydrotesting to 18 bar. I wonder what the worst failure could be, assume a dribble leak, or could there be a major blowout occur.. i dont know.
The special flange is real...
8" Sch 40 has an ID of 202.74mm, so we can roll 2/3 plate to this ID +/-, but a close as possible to this. Agree you state the mill tolerance, but we try to get close to the theoretical.
6m of 8" sch 40 304ss is approx €5k. We can get this rolled and welded for fraction of this (welder not code...
Totally agree, in that we intend to hydrotoest. The reason we want to roll pipe is to save money. As its a calibration loop, the ID is critical. Typically need the ID of 8" sch 40 but that is very expensive in 304ss. We can get the same ID from formed pipe (rolled or folded) making it alot...
We have a pressurized calibration loop where we want to reduce cost for spool sections. We want to be in compliance with B31.3 generally.
As we need to have inner diameter to a certain dimensions (8" sch 40), we can get 2 or 3mm plate rolled to this ID.
To be in compliance with B31.3, do we...
Hi all. My company builds flowmeters using short pipe lengths (A106, A312 etc). Is there a standard that states the heat number must be transferred between the new pipe from the original pipe section.
Of course common sense should prevail but I’d like to know if there is an international...
Hi – last year a purchased a panel heater but since it has stopped working, I have established that it is the thermal fuse that is gone.
I cannot find on the internet the same fuse, so I need some help to understand these components. Since I cannot find the exact same fuse, I need to figure how...
Hi I’m relatively new to Norsok requirements on oil & gas equipment. My understanding is that material to be used shall come from a Norsok Qualified mill according to M-650. This mill would need to have a QTR certificate for each type of material.
I’m being told that if I get the steel from a...
Scenario: Design Code B31.3. Branch connection to pipe run is hill side.
Code Clause: 304.3.1 (b) (4) “the axis pf the branch intersects the axis of the run”
Problem: B31.3 does not consider hill side branch connections.
Solution: Refer to 304.7.2, but this does not allow calculation to ASME...
Yes that is correct, thanks for your response. i might have to change the gear ratio for correct motor selection. Thanks for your response. Have i calculated the correct torque? Does 0.7Nm sound correct?
Due to space restrictions I wish to design a linear actuator using trapezoidal screw, see attached sketch.
Travel required=730mm
Required time=25sec
Motor Speed=584rpm
Mass=45Kg
l=Screw pitch=3mm
dm=Mean pitch diameter=12.45mm
f=Friction coefficient=0.15
F=Load=441.45N
Calculated torque...
