Hydraulic Steel Tube and Chrome Rod
Professional manufacturer of Hard chrome rod for hydraulic, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China. Hydraulic steel tube and chrome rod Description Similar name: honed...
Professional manufacturer of Hard chrome rod for hydraulic, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China.
Hydraulic steel tube and chrome rod
Description
Similar name: honed tube, cylinder tube, skived tube, cylinder barrel, skived and roller burnished tube
Grade: ST52, CK45, CK20, E355/S355, 20MnV6, 27SiMn, STKM13C, SAE1020/1026/4140, 42CrMo, SS304/316
OD metric size: 30 to 2000 mm
OD imperial size: 1.5" to 50" (inch)
Length: max 16 Meter for some sizes.
Straightness: <0.5 mm/m
Tolerance OD: DIN 2391
Tolerance ID: ISO H8, H9, H10
Roughness (Ra): <0.8
State: high precision cold drawn, seamless, ID honed/burnished
Heat treatment: stress relived, annealed
High precision cold drawn tube is available, please refer to ready to honed tube introduction.
Chemical Composition
Chemical Composition (%) | ||||||
Steel Grade | C | Si | Mn | P | S | Cr |
≤ | ||||||
St45 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.250 |
St52(E355) | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | 0.25 |
SAE 1026 | 0.22-0.28 | 0.15-0.35 | 0.60-0.90 | 0.040 | 0.050 | / |
27 SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.035 | 0.035 | 0.300 |
20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.250 |
Mechanical Properties
Delivery Condition | Cold drawn + stress-relieved (BK+S) (SR) | Cold fished (hard) (BK) | |||
Steel Grade | Tensile strength (Rm Mpa) | Yield strength | Elogation A5% | Tensile strength (Rm Mpa) | Elogation A5% |
20# | ≥520 | ≥375 | ≥15 | ≥550 | ≥8 |
45# | ≥600 | ≥520 | ≥10 | ≥640 | ≥5 |
E355(Q345B, St52) | ≥600 | ≥520 | ≥14 | ≥640 | ≥5 |
25Mn | ≥600 | ≥510 | ≥15 | ≥640 | ≥5 |
27SiMn | ≥760 | ≥610 | ≥10 | ≥800 | ≥5 |
Similar name: hard chrome plated rod, chrome plated shaft, chromed steel bar, chromed steel rod, piston rod
Steel grade: CK45/SAE1045/EN8,SAE4140/42CrMo,20MnV6,ST52.3,AISI431,TP304/316
Type: round solid bar; hollow bar
Heat treatment: normalized; annealed; stress released; induction hardened
OD metric size: 6mm to 1000mm OD imperial size: 1/4 to 50 inch
Hard chrome plate thickness: 10 to150 micron meter (as per request)
Surface roughness: Ra<0.4
Tolerance: ISO f7, f8, f9, H6, H7, H8 (as per request)
Ovality: < half of the OD tolerance
Straightness: <0.2 mm/m
Salt Spray Test: ASTM B117-72hours/96hours, results evaluation refers to ISO4540 Rating 8 to1 0.
Package: anti rust oil on material and packed first by cardboard sleeve then in steel frame wooden box.
Hollow chrome plated bar/induction hardened hollow chrome plated bar is available.
Machining service according to detailed drawing is available and other technic request can be discussed.
Chemical Composition
Material | C% | Mn% | Si% | S% | P% | V% | Cr% |
Ck45 | 0.42-0.50 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | ≤0.25 | |
ST52 | ≤0.22 | ≤1.6 | ≤0.55 | ≤0.04 | ≤0.04 | 0.02-0.15 | |
20MnV6 | 0.17-0.24 | 1.30-1.70 | 0.10-0.50 | ≤0.035 | ≤0.035 | 0.10-0.20 | ≤0.30 |
42CrMo4 | 0.38-0.45 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | 0.07-0.12 | 0.90-1.20 |
40Cr | 0.37-0.45 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | 0.80-1.10 |
Mechanical Properties
Material | T.S N/MM2 | Y.S N/MM2 | E%(MIN) | CHARPY | CONDITION |
CK45 | 610 | 355 | 15 | >41J | NORMALIZE |
CK45 | 800 | 630 | 20 | >41J | Q + T |
ST52 | 500 | 355 | 22 | NORMALIZE | |
20MnV6 | 750 | 590 | 12 | >40J | NORMALIZE |
42CrMo4 | 980 | 850 | 14 | >47J | Q + T |
40Cr | 1000 | 800 | 10 | Q + T |
Quality Inspection and Testing
Application
Introduction of Company
Qingzhou Longyue Hydraulic Machine Co.,Ltd was established in 2001, with more than 10 years import and export experences. Qingzhou Longyue Machine has been an influential exporter in the global metal products market. More than 160 customers from 26 countries and regions have established long-term business relationships with us.
Our main business range is listed as follows:
Carbon Seamless Steel pipe/tube
Hydraulic cylinder tube(Honed tube)
Hard chrome plated rod/bar/shaft(Piston rod)
We sincerely welcome friends from all over the world contact us to establish mutually beneficial business relationships.
