12

12

l l l (, )l l l

1.

- A : - B : - C : , - D :

- : , - , : .

- (Double welded), (Single welded)(Single welded)

- V, U, .

1.

-

(RT) .

- tank marking, , ,

.

2.

- (Plate) (Tag weld)

- :

- :

- : ,

.

3.

1) - : - Sit-on type : - Sit-in type : , , - - : Sit-in, Sin-on - : , - : - :

2)

4.

,

(Strip)

5.

(AC DC) SAW ,

13

13

(Tube) (Tube sheet) (Tube) (Tube sheet) (Tube) (Tube sheet) (Orbital) (Brazing)

1.

1)

: , , .

- :

- :

- : .

2)

, ,

3)

: ASME CODE SEC.

3

Full Strength Weld :

Partial Strength weld : ,

Seal Weld :

2.

GTAW(TIG)

:

: Mock-up ,

3.

(PT) , , ,

(Pit)

-

- (Blowhole)

- , , ,

4.

(Orbital, )

- GTAW

- GTAW ,

GTAW .

-

.

- ()

- ( )

5.

-

.

(Brazing)

- 450

- (Filler Metal) (Insert Metal)

.

-

, .

.

, .

.

, , .

.

(, ) .

.

.

14

14

,

1.

,

2.

(5G)

, ,

3.

:

: ( )

,

4.

:

Welding neck :

Slip-on :

Socker Weld :

5.

6.

7.

GTAW

8.

Narrow Gap

V U

9.

[ ]

(Clamp)

( ) .

.

[ ]

.

.( )

50mm .

.

.

9.

[ ]

, .

, ,

.

.

, ,

.

[ ]

.

, ,

, .

12_13_ 1 2 3 4 5

14_ 1 2 3 4 5 6