DD 39:1974
Withdrawn
Date published:
Welding on steel pipelines under pressure
Factors influencing safety including pipe material, thickness and diameter, nature of fluid content, pressure, temperature and flow rate, material for fittings and attachments, welding procedure and overall operational procedure in check-list form.
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25.160.10 Welding processes and welder's qualifications
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DD 39:1974
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