
- Factory-manufactured socket and external welding performed on site.
- The external coating never needs to be repaired after welding.
- Heat-shrinkable sleeve to be applied on site.

- Factory-manufactured socket and external welding performed on site.
- Inner coating to be repaired after welding.
- Heat-shrinkable sleeve to be applied on site.

- Inner welding on site (factory applied patented system).
- Inner coating needs to be repaired after welding.
- No heat-shrinking sleeve on site.

- Factory-manufactured socket and external welding performed on site.
- The external coating never needs to be repaired after welding.
- Heat-shrinkable sleeve to be applied on site.

- Factory- manufactured spherical joint and external welding on site.
- The external coating never needs to be repaired after welding.
- Heat-shrinkable sleeve on site.

- Factory- manufactured spherical joint and external welding on site.
- The external coating never needs to be repaired after welding.
- Heat-shrinkable sleeve on site.
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