Minimum spacing between circumferential welds joints

  • chanock
  • chanock's Avatar Topic Author
  • Offline
  • Senior Member
  • Senior Member
More
17 years 5 months ago - 17 years 5 months ago #7209 by chanock
hola a todos/ HELLO to alls

i'm new in this place but i got a one question.
what is the Minimum spacing between circumferential welds joints, according to which norm or code (ASME, API OR WHAT HANDBOOK)

THANKS/GRACIAS
MIL DISCULPAS MI INGLES ES MUY MALO
SALUDOS

Please Log in or Create an account to join the conversation.

More
17 years 5 months ago - 17 years 5 months ago #3803 by Jop
Replied by Jop on topic I presume you are referring
I presume you are referring to proximity of butt welds in pipe. This question has been asked several times. The answer is the Codes do not provide specific guidance. In this situation, use engineering judgment, such as locate the butt welds as far away as possible to avoid overlapping weld heat affected zones and stress concentration effects.

You might also want to talk to a good Welding Eng.as it could be dependent on process. If this is for proxmity of joints to one another there could be other concerns--again the Welding Eng. could help you.

For girth weld spacing, a criterion that was developed many years ago based on welding tests is: the greater of 2 inches or 4 times the wall thickness.

Do it once and Do it Right

Please Log in or Create an account to join the conversation.

  • chanock
  • chanock's Avatar Topic Author
  • Offline
  • Senior Member
  • Senior Member
More
17 years 5 months ago - 17 years 5 months ago #3805 by chanock
Replied by chanock on topic For girth weld spacing, a

For girth weld spacing, a criterion that was developed many years ago based on welding tests is: the greater of 2 inches or 4 times the wall thickness


where I can consult this that you say, some one book, manual, formulates.
thank for your answer
saludos amigo

Please Log in or Create an account to join the conversation.

More
17 years 5 months ago - 17 years 5 months ago #3806 by Jop
Replied by Jop on topic Go read about "Pup piece,
Go read about "Pup piece, how long?" about 5 topics down on this forum.

Do it once and Do it Right

Please Log in or Create an account to join the conversation.

  • chanock
  • chanock's Avatar Topic Author
  • Offline
  • Senior Member
  • Senior Member
More
17 years 5 months ago - 17 years 5 months ago #3807 by chanock
Replied by chanock on topic thanks, for pups on pipelines
thanks,
for pups on pipelines i found this (to see section 9.5.4):
www.iploca.com/cmsFiles/File/contract/Vo...20FIELD%20WELDING%22
but an elbow of 6 degrees not is equal than a pup, for this reason i do opened a new subject.

Please Log in or Create an account to join the conversation.

Moderators: Jop
Time to create page: 0.220 seconds