hydraulic pressure cylinder tube

hydraulic pressure cylinder tube 1.Material:ST52 2.MOQ:3Tons 3.Short Delivery Time 4.Competitive price

hydraulic pressure cylinder tube  

1.Standard:  DIN2391,DIN2445,EN10305,GB/T 3639,GB 8713

2.Material: 10#,20#,45#,16Mn,ST45,ST52

3.Delivery Condition: NBK(+N) BKS(+SR)

4.Specification:OD:36mm-480mm, ID:30-400mm, WT:3-40mm

5.Usage: Cold drawn or cold rolled precision seamless steel pipes are mainly used for hydraulic pressure and pneumatic services, auto pipe, oil cylinder pipe, motorcycle shock reducer steel pipes and auto shock reducer inner  cylinder

 

 

Delivery condition	cold finished(hard)(BK)		Cold drawn and stress-relieved(BK+S)
Steel grade	Rm MPa	ElongationA5(%)	Rm MPa	ReH MPa	ElonggationA5(%)
20#	≥550	≥8	≥520	≥375	≥15
45#	≥640	≥5	≥600	≥520	≥10
16Mn	≥640	≥5	≥600	≥520	≥14
27SiMn	≥840	≥5	≥800	≥720	≥10
ST45	≥550	≥5	≥520	≥375	≥15
ST52	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥510	≥12

Tolerance	I.D Tolerance			Tolerance of wall thickness
Size of I.D	H8	H9	H10
30	+0.033	+0.052	+0.084	<120mm(O.D)                  ±5%≥120mm up to 210mm   ±7.5%>210mm   ±10%
>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

Processing form	I.D mm	Length	Straightness	I.D tolerance	I.D Roughness(RA)
Cold rolled	30-100	≤12M	0.3-1.0/1000	H8-H10	0.4-1.6μm
Cold drawn	30-250	≤12M		H8-H10	0.8-1.6μm
Hone	40-500	≤12M		H8-H9	0.4-0.8μm
SRB	50-250	≤9M		H8	0.1-0.4μm

hydraulic pressure cylinder tube