Large 2m dia pipe welding?
Posted: Fri Apr 17, 2020 9:47 am
Hey guys.. hoping people with pipe experience can pipe up. First off a bit about myself.. Been stick welding heavy gauge mild steel for 35 years. By heavy I mean 1" thick or heavier. I have about 2 years experience in welding pressure pipe.
Recently the owner has thrown a big job in my lap and I came here to gather info so I can quote this job.
I have to cut what is called a joint off the end of a 2m dia pipe and reattach another type of joint. The wall thickness is 2"
Pictures will follow.
I would like to know what the travel speed of mig and stick is. How many inches can be laid down in one minute. Is there somewhere I can reference this? We use .035 hardwire and stick. We have only one Mig machine and one diesel 300 stick welder 7018. Would it be a problem if one type was to weld over the other?
My plan is to round the pipe and joint. braces will be added and not removed till completed. I was thinking of beveling a Y joint on the outside and inside of the Joint pipe being added, and welding dogs on to keep it aligned during welding. Normally these pipes are welded by robot.
Would love to hear your opinions
uploading pics soon
Recently the owner has thrown a big job in my lap and I came here to gather info so I can quote this job.
I have to cut what is called a joint off the end of a 2m dia pipe and reattach another type of joint. The wall thickness is 2"
Pictures will follow.
I would like to know what the travel speed of mig and stick is. How many inches can be laid down in one minute. Is there somewhere I can reference this? We use .035 hardwire and stick. We have only one Mig machine and one diesel 300 stick welder 7018. Would it be a problem if one type was to weld over the other?
My plan is to round the pipe and joint. braces will be added and not removed till completed. I was thinking of beveling a Y joint on the outside and inside of the Joint pipe being added, and welding dogs on to keep it aligned during welding. Normally these pipes are welded by robot.
Would love to hear your opinions
uploading pics soon