vks1986
Materials
- Dec 29, 2012
- 21
Hello all, now i have facing problem of solidiction crack and lower impact value. we have pipe order of 36inch dia and 44mm thickness . our process of sawpipe welding is first doing gmaw on od longitudinaly then three wire tandam saw welding in inside and then outside of pipe longitudinally and impact requirment at -20c avg 105 in api 5l x65m grade pipe. we are facing problem of solidifiction crack and lower impact about 40j. and we are weld same grade pipe with same consumable of thick 23mm we geting 164j impact at -20c and no solidification crack. how it possible?..