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7. Istruzioni per una saldatura di tasca corretta

7. Istruzioni per una saldatura di tasca corretta

7. Istruzioni per una saldatura di tasca corretta

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Table 1. Wel<strong>di</strong>ng parameter<br />

Diameter Diameter Heating Heating hol<strong>di</strong>ng Cooling Hole<br />

Pipe derivation time pipe time saddle time time Diameter<br />

(mm) (mm) (sec) (sec) (sec) (min) (mm)<br />

40 20 30 20 30 30 15<br />

50 20 30 20 30 30 15<br />

63 20 30 20 30 30 15<br />

63 25 30 20 30 30 20<br />

75 20 30 20 30 30 15<br />

75 25 30 20 30 30 20<br />

90 20 30 20 30 30 15<br />

90 25 30 20 30 30 20<br />

40 1 /2” 30 20 30 30 12<br />

40 3 /4” 30 20 30 30 12<br />

50 1 /2” 30 20 30 30 12<br />

50 3 /4” 30 20 30 30 12<br />

63 1 /2” 30 20 30 30 12<br />

63 3 /4” 30 20 30 30 15<br />

75 1 /2” 30 20 30 30 12<br />

75 3 /4” 30 20 30 30 15<br />

90 1 /2” 30 20 30 30 12<br />

90 3 /4” 30 20 30 30 15<br />

26

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