Piping, Piping Arrangement

배관

Piping Diagram

배관계통도

Piping Work

배관공사

Parallel System

병렬식

Proof Stress

보증응력

Protective Coatings

보호피막

Pontoon Bridge

부교

Partial Joint Penetration : PJP

부분용입

Powder Cutting

분말절단

Purser

사무장