On: November 5, 2012 Posted in Engineering Questions Comments: 1 Views: 1k What is the difference between P11 and P12 Pipes? Education QuestionsEngineering Questionsinterview-questions
P11 the chromium molybdenum composition that is 1% of chromium and 1/4% of molybdenum and P12 the chromium molybdenum composition that is 1% of chromium and 2% of molybdenum.