API 5L
API 5L
(OP)
There are so many organizations with their own pipe specifications. What is special about API 5L various grades.
In Grades A nab B, it has same yield as ASTM A53, A106, so why use the API?
In grade X42, it is only 2,000 psi better than A106 Gr C, and it is matched in yield by most of the ASTM Y-- standards, and joint efficiencies are equal.
So what special qualities does it have to distinguish it from older ASTM types?
Are manufacturing standards better?
Does it cost more per pound?
In Grades A nab B, it has same yield as ASTM A53, A106, so why use the API?
In grade X42, it is only 2,000 psi better than A106 Gr C, and it is matched in yield by most of the ASTM Y-- standards, and joint efficiencies are equal.
So what special qualities does it have to distinguish it from older ASTM types?
Are manufacturing standards better?
Does it cost more per pound?





RE: API 5L
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: API 5L
RE: API 5L
NozzleTwister
Houston, Texas
RE: API 5L
But rather than make (and carry in inventory) seamless pipe to three material specifications, they make the one with the most rigorous specification and sell it as multiple qualified pipe. Piping manufactured to the specification for A-106, Gr. B satifies the requirements for both the others. Seem they find it cheaper than carrying all three grades in their inventory. If you insist on ASTM A-53, Grade B, seamless pipe they will sell it to you marked that way, same price. I visited a site Monday where a new steam system was being installed (tunnel) and all the seamless pipe on site was marked ASTM A-106, Gr. B, A-53, Gr. B, API-5L, continuously down its length.