Non-destructive testing of steel tubes - Part 11: Liquid penetrant testing of seamless and welded steel tubes for the detection of surface imperfections; German version EN 10246-11:2000— 8 стр.
Non-destructive testing of steel tubes - Part 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections (ISO 10893-4:2011); German version EN ISO 10893-4:2011— 13 стр.
Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements; German version EN 10253-2:2007— 124 стр.
Non-destructive testing of steel tubes - Part 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections (ISO 10893-4:2011); German version EN ISO 10893-4:2011— 13 стр.
Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements; German version EN 10253-2:2007— 125 стр.