Class 300 nipple (sched.80) Vs thickness calculation
Class 300 nipple (sched.80) Vs thickness calculation
(OP)
Hi,
I was hoping to get some help here.
A class 300 nipple (2 in sched. 80) I chose for my design (Class 300), is capable of holding 1500 psig of pressure from (-29 to 66 Celsius). However when I calculate this nipple as per B31.3 having into account: 12.5% under tolerance allowance, 0.118 Corrosion Allowance (sea water), and h=.06597 in thread depth I just don't meet the minimum thickness required.
What do you usually do in this situation?
JJAV1983
I was hoping to get some help here.
A class 300 nipple (2 in sched. 80) I chose for my design (Class 300), is capable of holding 1500 psig of pressure from (-29 to 66 Celsius). However when I calculate this nipple as per B31.3 having into account: 12.5% under tolerance allowance, 0.118 Corrosion Allowance (sea water), and h=.06597 in thread depth I just don't meet the minimum thickness required.
What do you usually do in this situation?
JJAV1983





RE: Class 300 nipple (sched.80) Vs thickness calculation
2. Change material - SStl will reduce the required corrosion allowance, for example. That induces a whole lot of other problems though.
3. Use a thicker fitting of the original material (higher class fitting = thicker wall).
RE: Class 300 nipple (sched.80) Vs thickness calculation
RE: Class 300 nipple (sched.80) Vs thickness calculation
RE: Class 300 nipple (sched.80) Vs thickness calculation
RE: Class 300 nipple (sched.80) Vs thickness calculation
General Blr. CA,USA
RE: Class 300 nipple (sched.80) Vs thickness calculation