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9、13 c21)1 o if ill1*JktiR c 2 9)11 j!gg.(30)12 _Ifi3:14 c 3 1)*m:m1mi .c 3 2)51 ffl f ft .(3 3)m=.gf;-x i.5t qJj.c 3 s)2 Contents 1 General prov1s1ons (I 2 Terms (2 3 Inspection of pipework components and materials (4)4 Machining of piping (6 4.1 General requirement 6 4.2 Pipe cutting 6 4.3 Bending f
10、abrication.6 4.4 Flanging edge of pipe .(8 4.5 Machining of prefabricated pipe 8 4.6 Prefabricating of field welded and installed pipe(1 1)4.7 Machining of piping supporter and hanger (1 1)5 Sealing and preserving of prefabricated pipe (1 2)6 Welding of piping .(1:;)7 Installation of piping.(1 7)7.1
11、 General requirement (l 7)7.2 Installation of prefabricated pipe.(l 8)7.3 Installation of field welded pipe.(l 9)7.4 Valve installation .(1 9)7.5 Expansion joint installation .(2 0)7.6 Piping supporter and hanger installation.(2 0)8 Inspection,examination and test for piping C 2 1)8.1 Visual inspect
12、ion .(2 1)8.2 Examination of welded scam .(2 1)8.3 Test of prefabricated pipe .(2 2)3 8.4 Test for piping (2 3)9 Blowing and cleaning of piping (2 7)10 Painting and labeling of piping (2 9)11 Thermal insulation of piping (3 O)12 Hand-over and acceptance of engineering (3 1)Explanation of wording in
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