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.

ST 52 CHEMICAL COMPOSITION (%)

Si (Max)	Mn (Max)	C (Max)	P (Max)	S (Max)
0.55	1.6	0.22	0.025	0.025

MECHANICAL PROPERTIES

Tensile strength Min	Yield Point Min	Elongation % Min
580 N/mm²	420 N/mm²	10

Marking: JW, ID, OD

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.