CURRENTLY WORKING ON A LITTLE NATURAL GAS PIPELINE. WHILE STRENGTH TESTING THE NEW PIPE WE HAVE HAD TWO 10 " 3000# FLANGES DEVELOPE CRACKS AT ABOUT 800## WE NEED TO TEST TO 1,000 FOR 8 HOURS. WE HAD NO PROBLEMS WITH THE FIRST TESTS WE DID BUT THIS NEWE LOT OF FLANGES HAVE DIFFERENT HT NUMBERS ANY ONE ELSE HAVING PRFOBLEMS WITH THIS MATERIAL X-234 '
Are you referring to ASTM A 234 steel? This material is for pipe fittings (elbows, tees, reducers), not flanges. What do you mean by "HT numbers"? Giovanni S. Crisi Sao Paulo - Brazil
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