Non-destructive testing of steel tubes. Automatic eddy current testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections— 18 стр.
Non-destructive testing of steel tubes. Automatic ultrasonic testing of the weld seam of electric welded steel tubes for the detection of longitudinal imperfections— 14 стр.
Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes, Specific requirements for electric resistance welded (including induction welded) steel tubes— 18 стр.