crane rail q345b steel flat bar - Glorysteelwork is a professional manufcture of steel flat bar in china, we could offer quality steel flat bar for crane rail. Normally the crane rail flat bar size include: 60*40 50*30 40*30 1. Produce Standard: as the GB, AISI, ASTM, SAE, EN, BS, DIN, JIS Industry Standard 2. Produce processes: Hot rolled 3. Heat treatment: Normalized / Annealed / Quenched+Tempered 4. Quality assurance: All order we can received Third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.