honing machining

honing machiningGradeST45.8, ST 52.3 BK+S Metric size O.D: 30 to 700mm, Max length 12m. Straightness: 0.5 -1.0/1000 Tolerance EXT: DIN 2391 Tolerance INT: ISO H8 Roughness(Ra): 0.2 to 0.4μ Typecold drawing, cold rolling, honed Marking: JW, material grade, specification Length: unbending length or fix length Package: steel strip bundle, knitting strip bundle or steel box. Conservation: Anti rust oiled inside and outside surface, cap in both end. WELD ABILITY Very good weld ability according to the common welding system. Impact test: -20, 27 J (only for especial require) TOLERANCES 1.OUTER DIA <40mm ±0.2mm FROM 40 TO 100mm±0.3mm >100mm±0.5mm 2.WALL THK <120mm OD±5% >120mm±7.5%