Honed tube
Grade：ST 52，stainless steel, alloy steel, and special steel
Size range：
Inside diameter: from 40 to 1000mm,
Max length:20 meters.
Straightness: 0.5 /1000
Tolerance EXT: DIN 2391
Tolerance INT: ISO H7, H8, H9
Roughness(Ra): 0.1 to 0.2µ
Impact test: -20℃, 27 J (only for special requirement)
Type：cold drawing, normalizing treatment, honing.
Package: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends. banding with steel/plactic strips, braiding parcel at outside.
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