There are no joints in the end caps; what should be done if the end caps purchased have joints?

Return,,,,,,,,

It’s impossible to weld together heads of such a small diameter.

If the technical requirements of the design drawings or the purchased end caps do not permit welding, but the delivered items are welded anyway, then first, it is necessary to check with the designers to see if welding is allowed; second, the end cap manufacturer should be asked to supply new items.

This seamed head cannot be used with this equipment; generally, heads with a diameter of 1000 are not joined together.

1. Perform rework treatment, and conduct 100RT testing on the weld. The nozzle arrangement on the head should avoid the weld seams. Regarding the procedures, an NCR reuse should be handled internally by the manufacturing plant, and the drawing design unit must give its approval.

The main stressed components purchased do not meet the requirements of the design drawings; either return them or contact the design team to determine whether a design change is possible: lol

The most straightforward issue is handling returns; it’s completely unreasonable, and hard to understand, to use splicing for elliptical end caps of such a small diameter. However, if cooperation with the head manufacturer is good or if concessions are made for other reasons, the following approach should be adopted: 1. If the design work is carried out by your own factory, then it is simpler to handle, as only internal processing is required ； 2. If the design work is to be carried out by a design institute, a change order must be submitted to explain the situation and obtain the consent of the design institute. In any case, 100% RT inspection of the weld joints is required, with a grade of II being acceptable; if stricter requirements apply, 100% RT inspection of the weld joints must be carried out both before and after head forming. In my opinion, if it is a drawing from a design institute, it is unlikely to be approved; the manufacturing plant must bear the risks associated with procurement and processing on its own ； Design changes generally go from higher to lower levels. If there are no issues with one’s own purchase documents, one should be firm and demand a return of the goods, with the header manufacturer supplying them again.

How should the welding process be handled? Is there a non-destructive testing report?

Consult with the design institute to see if the design can be modified; if not, replace the head； If possible, the head welds must undergo 100% radiographic inspection, and after passing that, surface inspection is also required.

Does the purchase contract clearly state that assembly is not allowed? If nothing is specified, it is necessary to follow the standards; of course, you can also check the costs to determine whether to proceed with a return calculation or a non-destructive testing calculation. If the requirements are clearly stated in the contract or in the contractual drawings, then simply proceed with the return and file a claim