Could someone please enlighten me why there can be two nominal weights for the same OD and wall thickness?
For example, this is what I found on Tenaris Website.
18 5/8" OD 0.500" Wall casing has nominal weight 99ppf and 100ppf (Screenshot in attachment)
We make a living by what we get; we...
Hi, can anyone advise how to generate an S-N curve of a component using FEA?
Our company designed a product some years back, tested it in a resonance fatigue testing machine and generated an S-N curve.
Now we created a few variations of that product (similar geometry but different in size)...
Hi, I'm looking for a coating for steel pipe that can last for at least 2 years in marine environment. Any recommendations?
We make a living by what we get; we make a life by what we give.
Hi,
I'm purchasing a magnetizing machine for company, and it has specs as follow:
3-phase, 380V, 50Hz
Current = 300A
Duty cycle = 30%
Taking into consideration of the duty cycle, how much power should be allocated for safe operation?
Can anyone please advise the difference between AISI 4340 and AISI 4145H?
I cannot find mechanical properties (yield strength, tensile strength and so on) of AISI 4145H.
Many thanks.
Anybody please advise if it is possible to upset a SS pipe?
If yes, is there any standard procedure? what are the things need to pay attention to, and it there a limit on upset dimension?
If not, what are the reasons?
Thank you in advance.
When talking about metal fatigue, we know that number of loading cycles to failure is related to stress. But the stress we talk about here refers to max. stress or stress range?
I'd expect both max stress and stress range affect the number of cycles. Yet in a typical S-N curve I see only the...
I have an induction coil that requires 167KVA 380V 1 phase 50Hz.
My power supply is 415V 3 phase 50Hz.
How can I match the two, and what is the current in the power supply cables?
Thank in advance.
What's the implication of NACE MR0175/ISO 15156 on API L80?
Seems the only requirement is on hardness, max being HRC22 instead of HRC23 as specified in API 5CT?
Any other things I missed out?
We recently observed serious pitting on connection seal area of a pulled-out completion tubing string. The pipe is internal coated API L80 grade. The string is in hole for 6 month only.
What may be the possible reasons? Anyone has an idea?
Hi all, I just graduated and join a company on O&G industry. We deal with pipe for casing and tubing in a oil well.
Sometimes the pipes are made of stainless steel (13Cr, 22Cr, inconel etc). I was told that metal-to-metal contact for such material should be prevented as it will cause corrosion...
