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Hydraulic Cylinder tube is a kind of precision tube finally used for construction of hydraulic cylinder barrel. The key quality index is internal surface quality, including ID tolerance&ovality,internal surface roughness,etc. Others are determined by design.
Our Advantages:
• Regular stock of quality raw material from leading mills. Fine melting of raw material ensures the purity of steel,hence surface perfection after ID deeep hole boring, honing or skiving&roller burnishing.
• Advanced skiving&roller burnishing machine upto 9 meters. This ensures consistent internal surface, ID tolerance, as well as bore roughness. automatic blade sawing machine that ensures cut squarenesss within 0.5mm.
• Automatic blade sawing machine controls the cut squareness within 0.5mm.
• Value added service like OD polishing is available.
• Customized services like OD machining or CNC turning are available.
Parameters of cylinder tubes:
1. Size Range: 33mm(OD)*25mm(ID)-325mm(OD)*280mm(ID), including imperial sizes.
2. Regular steel grades:
DIN 2391-2: | ST52, ST52.3,ST52.4 |
EN 10305-1: | E355,C45E, E410,E470,20MnV6, E355K2,E355J2G3,S355JR, 42CrMo4 |
ASTM A519: | 1020, 1026, 1045,1518,1524,4130,4140 |
JIS G3445: | STKM13A, STKM 13B, STKM 13C |
JIS G3473: | STC370, STC440,STC510A, STC510B,STC540,STC590A, STC590B |
GB/T 32957: | 45#, Q345B,Q345C,Q345D,Q345E, 27SiMn, 25Mn |
3. Mechanical properties of typical steel grades under condition of SRA/BKS:
Tensile Strength ( Rm ) | Yield Strength ( ReH ） | Longitudinal Elongation ( A ) | |
1026/ STKM 13C/ STC510A: | ≥ 520 Mpa | ≥ 380 Mpa | ≥ 10% |
ST52/ E355: | ≥ 580 Mpa | ≥ 450 Mpa | ≥ 10% |
CK45/ 1045/ C45E | ≥ 560 Mpa | ≥ 480 Mpa | ≥ 8% |
4. OD polishing or OD machining: can be negotiated for supply.
