St52; Ck20 Seamless Honed Steel Tube

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Oiled
• Usage: Hydraulic/Automobile Pipe, Machinery Industry, Construction & Decoration
• Section Shape: Square
• Transport Package: Plastic Cloth Pakage with Bundle. Both End Caps.

Product Description

honed tube used for Hydraulic cylinder
1. MATERIAL SPECIFICATION
ST52,BK+S,DIN2391,ASTM A 106
 
2. CHEMICAL COMPOSITION (%)

Grade\ Elements	C(max)	Si(max)	Mn	P	S(max)
ST35	0.17	0.35	≥0.40	0.025	0.025
ST42	0.21	0.35	≥0.40	0.025	0.025
ST52	0.22	0.55	≤1.60	0.025	0.025

 
3. MECHANICAL PROPERTIES  of ST52 hydraulic cylinder tube
  Elongation(Min)    Y.S (Min.)         UTS (Min.)
   ≥15                     470 N/MM2      580 N/MM2
4. SUPPLY CONDITION
Cold drawn seamless steel tube, honed tubes,Skived and rolling tubes.
5.Dimension tolerance:

Size of I.D	I.D Tolerance			Tolerance of wall thickness
	H8	H9	H10	±5%
30	+0.033	+0.052	+0.084
>30-50	+0.039	+0.062	+0.100
>50-80	+0.046	+0.074	+0.120
>80-120	+0.054	+0.087	+0.140
>120-180	+0.063	+0.100	+0.160
>180-250	+0.072	+0.115	+0.185
>250-315	+0.081	+0.130	+0.210
>315-400	+0.089	+0.140	+0.230

6.Product description

Processing form	I.D	length	straightness	I.D tolerance	I.D Rounghness
Cold-rolled	30-100	≤12M	0.3-1.0	H8-H10	0.4-1.6
Cold-drawn	30-250	≤12M	0.3-1.0	H8-H10	0.8-1.6
Hone	40-500	≤12M	1000	H8-H10	0.4-0.8
SRB	40-400	≤7M	1000	H8	0.1-0.4