... well spainend casing pipes2. Steel Grade: H40, J55, K55, N80, M65, L80, L8013CR, C90, C95, T95, P110, Q125, V1503. Process: ERW ... Test Certificate: EN 10204/3.1B H40, J55, K55, N80, M65, L80, L8013CR, C90, C95, T95, P110, Q125, V150Oil casing steel ...