1: Fit-up inspections cover the material types and thicknesses, joint design including root opening, and the symbols on the joint members for the welders. If the root opening is greater than 3/16", then the weld size must increase proportionally (fillets), up to 5/16" root opening.Also, what is misalignment in welding?
Weld Misalignment. A cryogenic piping system was found to have a numerous instances of weld misalignment of circumferential butt welds joining sections of the piping system. Becht was asked to evaluate the effect of such misalignment and if repairs were required.
One may also ask, what is pipe alignment? ALIGNMENT OF PIPE––––––––––––––––––––––––––– Proper alignment is important if a piping system is to be correctly fabricated. Poor alignment may result in welding difficulties and a system that does not function properly. Welding rings may be employed to assure proper alignment as well as the correct welding gap.
Also question is, what is repair welding?
Repair Welding. Repair welding is a commonly used technique in which the cracked material is removed by arc gouging and the element is welded to re-join the material on either side of the crack.
How do you make one hole into a flange?
This rule of bolt holes straddling the natural centerlines is sometimes referred to as "Two-Hole" the flange. This means that the two of the holes straddle the centerline. To "One-Hole" a flange means that the flange has been rotated so that one hole is right on the natural centerline.
What is fitting in welding?
A Socket Weld is a pipe attachment detail in which a pipe is inserted into a recessed area of a Valve, fitting or flange. Fatigue resistance is lower than that in butt-welded construction due to the use of fillet welds and abrupt fitting geometry, but it is still better than that of most mechanical joining methods.Can two fittings be welded together?
"Fitting to fitting welding is not permissible; a pipe shall be (placed) between fittings." Any butt-weld fitting or weld-neck flange can be directly welded to any other butt-weld fitting or weld neck flange without the need for any extra piece of pipe (Pup piece) between them.Can you XRAY socket welds?
The answer to your question is "NO" because radiographic test can be used on socket welds. Radiography stated as one of examination method for Fillet [Note (4)].Why is Weldolet used?
Weldolets are used to create a 90-degrees (reinforced) pipe branch. The shape of the Weldolet ensures little stress concentration on the branched pipe, providing an integral reinforcement. On the branch pipe side, Weldolets may have the same schedule of the run pipe or a higher schedule.Can you weld a socket?
Yeah, impact sockets are generally a soft steel(so it doesn't break under the impacts). You won't know if you can weld it until you try.What is spigot and socket joint?
A spigot joint is a type of pipe fitting connection that is inserted into another pipe fitting. The spigot end typically has the same outer diameter as the pipe and is usually fitted into another joint called a bell or socket. Together, these two elements form what is commonly known as a bell and spigot joint.What is a half coupling used for?
Half Coupling is used for small bore branching from a vessel or large bore pipe. It can be threaded or socket type. It has a socket or thread end on only one side. A socket weld half coupling can be directly welded to large bore pipe, to make a branch connection. 
