Dear Experts,
We have some duct works (HVAC) in our site. Our client want to qualify the duct workers. Is there any such procedures for qualifying duct workers. If so, please convey your comments.
S.Binoy
S355 J2 WP is a weathering structural steel It has better atmospheric corrosion resistance. Use E 8018 - W1/W2 Electrodes This is regular...
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