Pipe welder, welding, grinding, metalwork

Question

Pipe welder, welding, grinding, metalwork.
How do you ensure proper alignment and fit-up when preparing pipes for welding?
Describe your experience with 6G pipe welding. What challenges do you face in this position?
Blueprint Reading
Are you comfortable reading and interpreting piping isometric drawings and welding symbols?

John · Answer

Normally a pipe fitter will do the pipework. Maybe a pipe fitter /welder. 
To do 6G normally means you have a coding (been tested and certified).
If you get to this level you will have answered most of these questions.

Pipework can be drawn isometric/line just to make it easier. Its normally taught how to read and implement as an apprentice along with fit up etc.

Its normal to be skilled in a pipe fitting trade to be doing this type of work

Rob · Answer

A simple and cost effective way of aligning pipes is achieved by using an appropriate size straight angle iron and 2 chain grips. Set the root gap with shims )I generally make my own root gap shims from various diameter filler wires) and start with the root run. Other alignment/fit up gear used is the chain block and hoits to hold in possition, very safe and effective.

6 G has many challenges, some including the weld behaviour at variable angles, body positioning, location of weld and size pipe. I have had good experience with big pipe welding jobs, 1 of which was the entire fire suppression system on a New Zealand based factory trawler. Another was a steam pressure vessel in a plywood factory.

Blueprints are generally fairly easy to read if done correctly, we have delt with a vast array of designs and plans in the some twenty year experience in the trade.

Pipe welder, welding, grinding, metalwork

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