hat
Soude kouti a ERW yon 135 klas tiyo B pwal chalè ki te trete aprè soudi pou yon minimòm tempreture de 540℃, lè sa a, Martensite untempered pa rete.
eng
Weld seam of ERW A 135 pipe grade B shall be heat treated after welding to a minimum tempreture of 540℃, so that no untempered Martensite remains.