Piping shall be classified as shown in table 56.04-1.

Table 56.04-1—Piping Classifications

Open Table
Service Class Section in this part
Normal I, II 56.04-2
Low temperature I-L, II-L 56.50-105

[CGD 72-206R, 38 FR 17229, June 29, 1973, as amended by CGD 77-140, 54 FR 40602, Oct. 2, 1989; CGD 95-012, 60 FR 48049, Sept. 18, 1995]


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