1

300*300*12

V

≤3

carbon steel

Each block minimum include 2 defects of “crack,slag, lack of penetration,

non-fusion, porosity”, not contain defects parallel to the weld

2

300*300*14

V

≤3

carbon steel

3

300*300*16

V

≤3

carbon steel

4

300*300*18

V

≤3

carbon steel

5

300*300*20

V

≤3

carbon steel

6

300*300*22

X

≤3

carbon steel

7

300*300*24

X

≤3

carbon steel

8

300*300*25

X

≤3

carbon steel

9

300*300*27

X

≤3

carbon steel

10

300*300*30

X

≤3

carbon steel