ASME B31T:2021 pdf free download

ASME B31T:2021 pdf free download.Standard Toughness Requirements for Piping.
(a) The actual postweld heat treatment time at temperature is warmer than previously qualified unless the material is P-No. I and the thickness is less than 50 mm (2 in). If the material is not postweld heat treated, the procedure shall be qualified without postweld heat treatment.
(b) The maximum calculated strain of the material exceeds the previously qualified strain by more than 03%.
(c) Preheat over 120°C (250°F) is used in the forming or bending operation but is not followed by a subsequent posiweld heat treatment.
3.7.4 WeLd FiLLer MetaL
3.7.4.1 Gei,erat. Weld 1111cr metal for applications in which the design minimum temperature is colder than the temperature listed in column 8 or colunin 9 olTable 3.1-1. as applicable, shall be impact tested. The impact tests shall be conducted for
(a) each lot of covered, flux cored, metal cored, or fabricated electrodes
(b) each heat of bare electrodes, rod, or wire for use with the oxy fuel welding (OFW). gas metal arc welding (GMAW). GTAW, plasma arc welding (PAW). and electrogas welding (EGW) processes (ASME BPVC. Section IX. QW/QB-492)
(c) each heat of consumable inserts
(d) each combination of heat of bare electrodes and lot of submerged arc flux
(e) each combination of lot of fabricated electrodes and lot of submerged arc flux
(f) each combination of heat of bare electrodes or lot of fabricated electrodes and dry blend of supplementary powdered tiller metal and lot of submerged arc flux
(g) each combination of heat of bare electrodes and Lot of electroslag flux
Where the specification for welding consumables sped- lies impact testing at a temperature equal to or colder than the design ml nimurn temperature, testing of each heat/lot combination is not required, provided the filler metal will be used in the same heat treatment condition as is sped- lied in the filler metal specification. Tests performed on the welding material in the qualification of weld procedures may satisfy the testing requirements for the lot. heat, or combination of heat and batch of welding material used.
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