between 30 and 40 degrees preferably 37 like pipe
wildly welding main pipe the are fillet weld or butweld
Electric resistant weld
Butt weld and groove weld are two common types of weld joints used in welding processes. A butt weld is a type of weld where two pieces of metal are joined together along their edges in a single plane, creating a smooth, flush surface. On the other hand, a groove weld is a type of weld where a groove or channel is created in one or both of the pieces being joined, and the filler material is deposited into the groove to create the weld. Both types of weld joints are used in various applications depending on the specific requirements of the project.
The step-by-step instructions on how to do a weld fitting on a A234 with a pipe of API 5L x60 w TH11.9 mm is not listed. It might be best to purchase a weld fitting manual for a A234 for further information.
between 30 and 40 degrees preferably 37 like pipe
It is the first pass in a multiple weld joint.
It is the first pass in a multiple weld joint.
You always weld the side with the preperation first, then if you get incomplete penetration you can grind the back out
27.5 degrees
Gi weld not recommended . Because of gi coationg will be spoiled out . Puncture will be occur on the pipe weld .
Very likely to leak, zinc in the GI pipe will be contaiminating the weld and thus you cannot get a good weld.
tack
A weldolet is a fitting you weld on a (run) pipe, and then butt weld a branch pipe to it. A tredolet is a fitting you weld on a (run) pipe, and then screw a threaded branch pipe to it. Some people call this a threadolet A sockolet is a fitting you weld on a (run) pipe, and then socket weld a branch pipe to it. A nipolet is the same as a weldolet or thredolet but has an elongated branch connection. You have to specify if it's a welded or threaded nipolet.
The pipe must be fixed (not rolled) in the horizontal position. With the pipe horizontal, the weld is vertical. The pipe being fixed requires the welder to weld flat (top), vertical (sides), and overhead (bottom). The pipe must be fixed (not rolled) in the horizontal position. With the pipe horizontal, the weld is vertical. The pipe being fixed requires the welder to weld flat (top), vertical (sides), and overhead (bottom).
wildly welding main pipe the are fillet weld or butweld
A butt weld is where the diameter of the pipes welded together are the same, a socket weld is where a larger diameter pipe is fitted into a smaller one. In making a butt weld, the pipes (or pipe and fitting) usually have an angle machined or ground into the outside corner, so when they are placed together face-face, there is a circumferential V shaped gap serving as the weld prep. In a socket weld, the pipe is inserted into the socket, backed off slightly to make a gap between the end of the pipe and the bottom of the socket, and the weld is made around the outside diameter of the socket to the outside diameter of the pipe. The gap at the bottom of the pipe prevents thermal expansion from stressing the joint during or after welding.