Our flat steel for shipbuilding has passed nine countries classification certificate,such as CCS, ... ,GL,BV,KR,ABS,NK and RINA Hot rolled flat steel bar for shipbuilding;(1) Material: A,B,AH32,AH36;(2) Size ... per customers' requirements;(4) Technical parameters: Q320581FBA002-2008; The details for Spec. as follows;SizeSpec.(mm)Section area (cm2)Theoretical weight ...