BS 1821:1982 Specification for Class I oxy-acetylene welding of ferritic steel pipework for carrying fluids (AMD 4501) (AMD 9738) (Withdrawn)
Welding ferritic steel pipe up to 10mm thick; parent metals, filler rods, preparation for welding, butt joints, branches, attachments, inspection, acceptance requirements, welding procedure and welder approval.
Confirmed November 2001.
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