Product particular communication: 1) Size: 6.35 - 406 mm (OD) x 0.89 - 35mm (WT) ; 2) Tight tolerance, Smooth surface, Uniform mechanical property(Mechanical Properties equilibrium) ; 3) Heat treatment: BK, BKS, GBK, NBK,Stress Relief, Normalizing, Spheroidize Anneal, Annealing, Bright Annealing, Normalized, Quenched and Tempered, Solution Annealing, etc ; 4) Continuous stenciling as required ; 5) Rust prevention treatment and light oiled as required ; 6) Plastic plugs or caps on both ends as required ; 7) Type: Round , Square, Rectangle, Hexagon. Streamline, etc. 8) Packaging: Hexagonal bundles of max. 1,500kg with several steel strips, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips or packed in heavy tri-wall boxes, wooden boxes, wooden slats as requires. 9) Main Applications: Automobile and Bearing Industry, Mechanical and Structral Purpose, Boiler and Heat Exchanger, Hydraulic and Petrochemical Purpose, etc. 0086 13921994182-->Bossling Chris.hwsteel (at)gmail(dot)com