API API-570

A NPS 4 Schedule 80 (0.337" wall) branch connection is welded into a NPS 6 Schedule 40 (0.280" wall). A 0.375" reinforcing pad is used around the branch connection. The fillet weld sizes are as required by the Code. The branch connection is inserted into the header. The material of the branch and header is ASTM A672 Grade B70. What thickness would be used to determine whether heat treatment of the connection is required ? (Express answer to nearest hundredth)

Steels with CE greater than 0.55% typically require:

Undercut is normally found_______________.

During periodic scheduled inspections, more extensive inspection should be applied to an area beginning __________ upstream of the injection nozzle and continuing for atleast __________ pipe diameters downstream of the injection point.

Austenitic stainless steels typically contain chrome and nickel, and are used for: