API 6D Annex G

API 6D Annex G provides specific requirements that are not to be coated on valve end flange, weld end and pipe pup connectors, and shall be performed after all testing is completed.

API 6D Annex G
(normative)
External Coating for End Connectors 

G.1  General

API 6D Annex G provides specific requirements that are not to be coated on valve end flange, weld end and pipe pup connectors, and shall be performed after all testing is completed.

G.2 Uncoated areas

Valves with raised-face end connectors shall have the area identified uncoated (see Figure G.1).
 

Figure G.1 — Valve with Raised Face
 

Valves with ring type joint or raised-face ring type joint end connectors shall have the area identified uncoated (see Figure G.2).

Figure G .2—Valve with Ring Type Joint or Raised Face Ring Type Joint
 

Valves with weld end connectors shall have the area identified uncoated (see Figure G.3).

Figure G.3—Valve with Weld End
 

Valves with pup pipe welded to end connectors shall have the area identified uncoated (see Figure G.4)

Figure G.4—Valve with Pipe Pup Weld Ends