Our products include the following grades according to API standards:
H40, J55, K55, N80-1, N80Q, L80-1, L80-9Cr, L80-13Cr, M65, C90, C95, T95, P110, Q125, etc. Line pipe products include grades B, X42, X52, X60, X65, X70, etc. Drill pipe products include grades E75，X95，G105 and S135
Products manufactured according to the standards formulated by the API. American Petroleum institute (API)
High Quality, Good Appearance complete specifications. Standard: ISO 3183, API SPEC 5L, ASTM/A53/A106, GB/T9711, GB/T3091, GB/T13793, SY/T5037, GB/T8163
Especificaciones completas de alta calidad y buena apariencia. Estándar: ISO 3183, API SPEC 5L, ASTM/A53/A106, GB/T9711, GB/T3091, GB/T13793, SY/T5037, GB/T8163
