rina grade dq63 marine steel - JIS steel - Steel Plate and gl grade dq63 steel property. AB/DQ63 shipbuilding steel plate is suitable for offshore drilling platforms, shipping engineering and shipbuilding projects. The shipbuilding steel plate is ABS grade DQ63.Its steel grade is equivalent with CCSDH620, BVDH620, NV D620, GL D620, KRDH63, LRDH63, KD63, and RINA D620. API5L X52NS&IPS-M-PI-190(2) 3LPE COATING SEAMLESS API5L X52NS&IPS-M-PI-190(2) 3LPE COATING SEAMLESS STEEL PIPE DN350, US $ 300 - 400 / Ton, API, API 5L, ST35-ST52, ST37, 2 - 50 mm.Source from Hebei Runcheng Steel Pipe