... : Material: Q195, Q215, Q235, Q345B, X42, Gr. B square hollow section of best quality:hollow section, good quallity ... ASTM, BS, JIS, 3.Material: Q195, Q215, Q235, Q345B, X42, Gr. B4.Specification: OD: 15*15mm-400*400mm, ... as per the customer's request 5. Terms of payment: T/T 30% deposit after signing the ... T/T the balance 70% after seeing the copy of B/L6. Packing: international exporting package, or ...