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Precision
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Surface finish: mirror polishing; (also available: sand finish, spray finish, chemical corrosion finish, engraving, laser curving, cutter curving...)
Roll body material: Fine quality Seamless steal pipe, integrated forging 45# steel; 20# steel; 42CrMoA steel alloy, etc.
Roll shaft material: 45 steel, integrate forging;
Roughness Ra0.01,(smooth finish:level 14),cooling or heating temperature difference <+/-1 degree,temperature distortion<0.01mm , flatness <0.005mm ,pulsation<0.005mm,surface hardness HRC55-58,hardness after chrome plating and polishing HV1000(hrc62)
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