Specifications

st52 cds steel pipe With competitive price
1. Smooth surface 2. Dimensional accuracy 3. Excellent micro-structure un

 st52 cds steel pipe With competitive price 

Cylinder material C20 C45 St52 size range(I.D): 30mm~500mm ID tolerance: ISO H8 Roughness:0.4 micron Straightness: 0.8/10

Grade  ST 52, C20 Ck45  25Mn .27Simn

Size range

Inside diameter from 40 to 1000mm,

Max length 20 meters

Straightness 0.5 /1000
Tolerance EXT DIN 2391
Tolerance INT ISO H8
Roughness(Ra) 0.2 to 0.4 micro

Type  cold drawing, normalizing treatment, honin

CHEMICAL COMPOSITION (%)

Si (Max)	Mn (Max)	C (Max)	P (Max.)	S (Max)
0.55	1.60	0.22	0.025	0.025

MECHANICAL PROPERTIES

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

Marking  ID, OD

Length unfixed length or fixed length

Package  banding with steel strips, braiding parcel at outside

Conservation  Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends.

 Impact test  -20°C, 27 J (only for special requirement)