After-sales Service: | Support |
---|---|
Warranty: | Support |
Type: | Seamless |
Technique: | Hot Rolled |
Material: | Carbon Steel |
Surface Treatment: | Black |
Customization: |
---|
Suppliers with verified business licenses
Honed tube is ready to use for hydraulic cylinder applications without further ID processing.
The honing process involves using abrasive polishing stones and abrasive paper to remove small amounts of material, to produce extremely precise ID dimensions and improved finishes. Honed tubing is ready to use for hydraulic cylinder applications without further ID processing.
Hydraulic steel tube is designed to convey liquid fluids to among hydraulics components, fittings, valves, flanges, and other tools. It is made of material E355 (ST 52.4) or E235 (ST 37.4). These two grades have different chemical composition. This helps to control the working pressure.
Chemical Composition (%) | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
E355 (ST52.4) | ⩽ 0.22 | ⩽ 0.55 | ⩽ 1.6 | ⩽ 0.045 | ⩽ 0.045 |
E235 (ST37.4) | ⩽ 0.17 | ⩽ 0.35 | ⩽ 1.2 | ⩽ 0.045 | ⩽ 0.045 |
Hydraulic tube is made according to DIN 2391/C (DIN EN 10305-1) or DIN 2445/2 (DIN EN 10305-4) standards and it is available in millimeters, inches outer diameter, and inches nominal bore size.
The tubes surface finishing is NBK, where the tubes are phosphate and normalized which provides corrosion resistance. It is oiled inside and outside. Normalize process creates tougher metal product. During normalizing, metals will be heated at a high temperature, and it allowed to naturally cool back down to room temperature by exposure after heating. Metals that have been through this process are more formable, harder and ductile.
Seamless Honed Tubes (Steel) with a micro-finish and highly accurate in bore size within tolerance H7 or equivalent.
Grade: ST 52, ST52.3, CK45, E355, 16Mn, STKM13C, SAE1020, SAE1026, SAE1045
Honed Tubes are ready to use for hydraulic cylinder applications without further ID processing.
Different sizes of ready to use honed tube are available.
ID(mm) | TOLERANCE(mm) | |||
H7 | H8 | H9 | H10 | |
<=30 | +0.021/0 | +0.033/0 | +0.052/0 | +0.084/0 |
30 - <=50 | +0.025/0 | +0.039/0 | +0.062/0 | +0.100/0 |
50 - <=80 | +0.030/0 | +0.046/0 | +0.074/0 | +0.120/0 |
80 - <=120 | +0.035/0 | +0.054/0 | +0.087/0 | +0.140/0 |
120 - <=180 | +0.040/0 | +0.063/0 | +0.100/0 | +0.160/0 |
180 - <=250 | +0.046/0 | +0.072/0 | +0.115/0 | +0.185/0 |
250 - <=315 | +0.052/0 | +0.081/0 | +0.130/0 | +0.210/0 |
315 - <=700 | +0.057/0 | +0.089/0 | +0.140/0 | +0.230/0 |
This will provide long piston seal life and prevent failure of the cylinder. The tube material is selected on the basis of application & working pressure.
The seamless tube for hydraulic cylinders, obtained from high quality cold drawn tubes, available in a wide dimensional range.
Steel Grade | Standard | Application | |||
GB(China) | ASME(USA) | DIN/EN(Euro) | JIS(Jpan) | ||
Carbon steel | 10 20 20G 20MnG 25MnG Q345B/C/D/E |
A106 SA-106B SA-106C SA-192 SA-210A1 SA-210C |
St35.8 St45.8 P235GH P265GH |
STB340 STB410 STB510 |
Economizer tube Water wall tube, pipeline, header pipe, Petrochemical furnace tube, heat exchange tube |
Mo steel | 15MoG 20MoG |
SA-209 T1 SA-209 T1a SA-209 T1b |
16Mo3 | 15Mo3 16Mo3 |
Water wall tube Superheater tube Reheater tube |
Cr-Mo Steel Cr-Mo-V steel |
12Cr1MoG 12Cr2MoWVTiB |
12Cr1MoV 14MoV63 |
Superheater tube Reheater tube, Pipeline, Header pipe, Petrochemical furnace tube, Heat exchange tube |
||
Cr-Mo-Steel Cr-Mo-W Steel Cr-Mo Steel Cr-Mo-W steel |
12CrMoG 15CrMoG 12Cr2MoG 10Cr9Mo1VNbN 10Cr9MoW2VNbBN 12Cr1Mo 12Cr5Mol/NT 12Cr9Mol/NT |
T11/P11 T12/P12 T22/P22 T23/P23 T24/P24 T5/P5 T9/P9 T91/P91 T92/P92 |
10CrMo5-5 12CrMo4-5 10CrMo9-10 7CrWVMoNb9-6 7CrMoVTIB10-10 X10CrMoVNb9-1 X10CrWMoVNb9-2 X11CrMo5+l/NT X11CrMo9-1+l/NT |
STB20 STB22 STB23 STB24 STB25 STB26 |
Superheater tube, Reheater tube, Main steam pipe, Pipleline, Header pip, Petrochemical furnace tube, Heat exchange tube |
Carbon steel Ni steel |
16MnDG 10MnDG 09DG |
A333-1 SA-333-1 A333-6 SA-333-6 A333-3 SA-333-3 |
STPL380 STPL450 |
Tube & pipe for Low-temperature service | |
Austentic Stainless steel | --- | AP304 TP304H TP321 TP321H TP347 TP347H TP316 TP316H S30432 TP310HCbN |
--- | Superheater tube Reheater tube |
Pipe types | Pipe Szie(mm) | Tolerances | |
Hot rolled | OD | <50 | ±0.50mm |
≥50 | ±1% | ||
WT | <4 | ±12.5% | |
≥4-20 | +15%, -12.5% | ||
>20 | ±12.5% | ||
Cold drawn | OD | 6-10 | ±0.20mm |
10-30 | ±0.40mm | ||
30-50 | ±0.45 | ||
>50 | ±1% | ||
WT | <1 | ±0.15mm | |
>1-3 | + 15%, - 10% | ||
>3 | + 12.5%, - 10% |
For pipe over 10 inches as a special OD tolerance pipe, the OD shall within vary +1% /-1%.
Standard | Hot finished seamless tube | Cold flnished seamless tube | ||
Out diameter (mm) |
Tolerance | Out diameter (mm) |
Tolerance | |
---|---|---|---|---|
EN10216-1 EN10216-2 DIN17175 |
≤100 | +/-0.75% (min.+/-0.5mm) |
All | +/-0.5% (min. +/-0.30mm) |
>100 | +/-0.90% | |||
GB/T 3087 | ≤460 | +/-0.75% (min.+/-0.5mm) |
10-30 | +/-0.40mm |
>30-50 | +/-0.45mm | |||
>50 | +/-1.0% | |||
GB/T 5310 GB/T 9948 GB/T 6479 |
<57 | +/-0.40mm | ≤30 | +/-0.20mm |
57-325 | +/-0.75% | >30-50 | +/-0.30mm | |
>325-460 | +1%,-2mm | >50 | +/-0.8% | |
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-213M JIS G 3461 JIS G 3461 |
≤101.6 | +0.4, -0.8mm | <25.4 | +/-0.10mm |
>25.4-38.1 | +/-0.15mm | |||
>38.1-50.8 | +/-0.20mm | |||
101.6-190.5 | +0.4, -1.2mm | >50.8-63.5 | +/-0.25mm | |
>63.5-76.2 | +/-0.30mm | |||
>76.2 | +/-0.38mm | |||
ASME SA106 ASME SA335 |
≤48.3 | +/-0.40mm | ≤48.3 | +/-0.40mm |
48.3-114.3 | +/-0.79mm | |||
114.4-219.1 | +1.59, -0.79mm | |||
219.2-323.9 | +2.38, -0.79mm | >48.3 | +/-0.79mm | |
>324 | +/-1.0% |
For standard pipe, except as provided for thin-wall pipe, the tolerances of diameter shall be in accordance with the following table:
Standard | Hot finished seamless tube | Cold flnished seamless tube | ||
Out diameter (mm) |
Tolerance | Out diameter (mm) |
Tolerance | |
---|---|---|---|---|
EN10216-1 EN10216-2 DIN17175 |
≤100 | +/-0.75% (min.+/-0.5mm) |
All | +/-0.5% (min. +/-0.30mm) |
>100 | +/-0.90% | |||
GB/T 3087 | ≤460 | +/-0.75% (min.+/-0.5mm) |
10-30 | +/-0.40mm |
>30-50 | +/-0.45mm | |||
>50 | +/-1.0% | |||
GB/T 5310 GB/T 9948 GB/T 6479 |
<57 | +/-0.40mm | ≤30 | +/-0.20mm |
57-325 | +/-0.75% | >30-50 | +/-0.30mm | |
>325-460 | +1%,-2mm | >50 | +/-0.8% | |
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-213M JIS G 3461 JIS G 3461 |
≤101.6 | +0.4, -0.8mm | <25.4 | +/-0.10mm |
>25.4-38.1 | +/-0.15mm | |||
>38.1-50.8 | +/-0.20mm | |||
101.6-190.5 | +0.4, -1.2mm | >50.8-63.5 | +/-0.25mm | |
>63.5-76.2 | +/-0.30mm | |||
>76.2 | +/-0.38mm | |||
ASME SA106 ASME SA335 |
≤48.3 | +/-0.40mm | ≤48.3 | +/-0.40mm |
48.3-114.3 | +/-0.79mm | |||
114.4-219.1 | +1.59, -0.79mm | |||
219.2-323.9 | +2.38, -0.79mm | >48.3 | +/-0.79mm | |
>324 | +/-1.0% |
The wall thickness at any point shall be within the below tolerance table.
Standard | Hot finished seamless tube | Cold flnished seamless tube | ||||
Out diameter OD(mm) |
Wall thickness T(mm) |
Tolerance | Out diameter (mm) |
Wall Thickness T(mm) |
Tolerance | |
---|---|---|---|---|---|---|
DIN17175 | ≤130 | S≤2Sn | +15%, -10% | -- | All | +/-10% (min. +/-0.2mm) |
2Sn<S≤4Sn | +12.5%, -10% | |||||
S>4Sn | +-/9% | |||||
>130 | S≤0.05da | +17.5%, -12.5% | ||||
0.05da<S≤0.11da | +/-12.5% | |||||
S>0.11da | +/-10% | |||||
EN 10216-1 EN 10216-2 |
≤219.1 | - | +/-12.5% (min.+/-0.4mm) |
|||
-- | T/D≤0.025 | +/-20% | ||||
0.025<T/D≤0.050 | +/-15% | |||||
0.05<T/D≤0.10 | +/-12.5% | |||||
0.1<T/D | +/-10% | |||||
GB/T 3087 | -- | ≤20 | +15%,-12.5% (min.+0.45, -0.35mm) |
-- | 1.0-3.0 | +15%, -10% |
>20 | +/-12.5% | -- | >3 | +12.5%, -10% | ||
GB/T 5310 GB/T 9948 GB/T 6479 |
-- | <4.0 | +15%,-10% (min.+0.48, -0.32mm) |
-- | 2-3 | +12%,-10% |
4-20 | +12.5%,-10% | >3 | +/-10% | |||
>20 | +/-10% | |||||
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-231M JIS G 3461 JIS G 3462 |
-- | 2.41-3.8 | +35%, -0% | ≤38.1 | -- | +20%,-0% |
3.8-4.6 | +33%,-0% | >38.1 | -- | 22%,-0% | ||
>4.6 | +28%,-0% | -- | -- | -- | ||
ASME SA-106 ASME SA-335 |
-- | All | +/12.5% | All | +/-10% |
Steel pipe delivery status(condition)
Steel pipe delivery status(condition): cold / hard (BK), cold / soft (BKW),after cold stress relief annealing (BKS), annealing (GBK), normalized (NBK).
Condition on delivery of steel pipe
Term | Symbol | Explanation |
Cold-finished/hard (cold-finished as-drawn) | BK | No heat treatment after the last cold-forming process. The tubes therefore have only low deformability. |
Cold-finished/soft (lightly cold-worked) | BKW | After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits. |
Annealed | GBK | After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum. |
Normalized | NBK | The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum. |
The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.
Cold rolled steel coil substrate products deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, PVC laminating steel plates, etc., so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.
Cold rolled steel coil finishing after annealing, cut the head, tail, trimming, flattening, smooth, heavy volume, or longitudinal clipboard. Cold-rolled products are widely used in automobile manufacturing, household electrical appliances, instruments, switches, buildings, office furniture and other industries. Steel plate strapping package weight of 3 to 5 tons. Flat sub-volume typically 3 to 10 tons / volume. Coil diameter 6m.
Suppliers with verified business licenses