Internal and external chrome platingHigh precision and high finish, the finish can reach ra0.2-0.4um.High pressure without oil leakage
The honing process is adopted to meet the requirements of the inner hole.It is mainly used to pneumatic or hydraulic components.
Smooth cut Tolerance H8 H9For outer cylinder of oil cylinder
It is mainly used to pneumatic or hydraulic components
Product Name | hydraulic cylinder tube /honed tube /seamless honed steel tube |
Standard
| GB/T3639-2000 DIN2391 EN10305 ASTM A519 |
Metarial
| C20 CK45 Q355B Q355D E355/ST52 SAE1026 4130 4140 STKM 13C |
Heat treatment
| BK+S |
Size | I.D:30mm-400mm | O.D:40mm-480mm |
Length | Fixed length ,Random length or as requests of customers |
Straightness | 0.5-1/1000 |
ID roughness | RA 0.1-0.8micron(max) |
Technology | Honed & SRB(SKIVED AND ROLLER BURNISHED) |
Application | Honed tube for hydraulic cylinder,swivel crane,injection machine and construction machine application |
Conservation | anti rust oiled inside and outside surface, plastic caps in both ends |
Package | bundle with steel strip and knitting strip, or wooden case |
HONED OR SRB TUBE TOLERANCE |
Inner Diameter | H8 | H9 | H10 |
|
30mm | ±0.033 | ±0.052 | ±0.084 | 5-30mm |
30-50mm | ±0.039 | ±0.062 | ±0.100 | ±0.080 |
50-80mm | ±0.046 | ±0.074 | ±0.120 |
|
80-120mm | ±0.054 | ±0.087 | ±0.140 |
|
120-180mm | ±0.063 | ±0.100 | ±0.160 |
|
180-250mm | ±0.072 | ±0.115 | ±0.185 |
|
250-315mm | ±0.081 | ±0.130 | ±0.210 |
|
Steel Grade | | | | | | | | |
20# | | | | | | | |
|
45# | | | | | | | |
|
Q345B | | | | | | | | |
Q345D | | | | | | | | |
25Mn | | | | | |
|
|
|
27SiMn | | | | | | | |
|
E355 | | | | | |
|
|
|
Steel Grade | Rm Mpa | ReH Mpa | Elonggation | cold finishedRm Mpa | cold finished Elonggation |
20# | | | | | |
45# | | | | | |
16Mn(Q345B1D) | | | | | |
25Mn | | | | | |
27SiMn | | | | | |
St45 | | | | | |
E355(st52) | | | | | |
SAE102 | | | | | |
Working method | | | | | |
cold drawn | | | | | |
cold rolling | | | | | |
cold drawn-honed | | | | | |
cold drawn-SRB | | | | | |
cold drawn-polished | | | | | |
cold drawn-polish- SRB | | | | | |