Explore our precision seamless tubes, engineered to meet exacting standards for seamless performance in various industrial applications.
CDS is popular in the hydraulics, being used to make hollowed chrome plated telescopic cylinders and hydraulic rods. It is also popular for large bore, heavy walled, high pressure hydraulic cylinders.
Outer diameter: 10-120mm
Wall thickness: 1-20mm
Explore our steel processing techniques, including precision drawing (Cold Drawn) and precision rolling (Cold Rolled), ensuring high-quality and precise end products.
Round, Special Shaped (Triangle, Rectangle, Hexagon, Octagon, and etc.)
Other special shapes, customizable according to drawings.
Alloy Structure Steels:GB/T 3077-2015
Quality Carbon Structure Steels:GB/T 699-2015
High Strength Low Alloy Structure Steels :GB/T 1591-2018
Designation | Symbol | Description | |||||||
Cold drawn/hard | +C | No heat treatment after the final cold drawing process | |||||||
Cold drawn/soft | +LC | After the final heat treatment there is a suitable drawing pass | |||||||
Cold drawn and stress relieved | +SR | After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere | |||||||
Annealed | +A | After the final cold drawing process the tubes are annealed in a controlled atmosphere | |||||||
Normalized | +N | After the final cold drawing operation the tubes are normalized in a controlled atmosphere |
Precision seamless pipes are typically produced through a cold-drawn or cold-rolled process. This process involves drawing the steel through a die to achieve the desired dimensions and surface finish. The resulting pipes have tight tolerances and excellent surface quality.
Type of steel | GB(China) | ASTM A519 | DIN | JIS3445/JIS G4051 | OCT 4543-71 |
Carbon steel | 10# | 1010 | C10/CK10 | SKM11A/ S10C | 10 |
20# | 1020/1018 | C22/CK22 | STKM12A/ 12B/ 12C | 20 | |
Q235B | S235JO(1.0114) | SS400 | Cr3K II | ||
25# | 1026 | STKM13A /13B/13C/ S25C | 25 | ||
35# | 1035 | C35/CK35 | 35 | ||
45# | 1045 | C45/CK45 | 45 | ||
55# | CF53 | 55 | |||
65Mn | 1566 | 65┌ | |||
Alloy steel | 16Mn(Q345/Q355) | St52 | |||
Q345A/A355A | Grade 50[345] | E355(1.0060) | SPEC590 | 345 | |
Q345B/Q355B | S355JR(1.0045) | ||||
Q345C/Q355C | S355J0(1.0553) | ||||
Q345D/Q355D | S355J2(1.0577) | ||||
Q345E/Q355E | S355NL(1.0546) | ||||
20Cr | 5120 | 20Cr4(EN10084-1998) | JIS SCr420(JIS G4053) | 20X | |
40Cr | 5140 | 41Cr4(1.7035) | JIS SCr440(JIS G4053) | 40X | |
15CrMo/15CrMoG | 15CrMo4 | SCM415 (JIS 4053) | 15XM | ||
20CrMo | 18CrMo4(1.7243) | SCM420(JIS 4053) | 20XM | ||
30CrMo | 4130 | 25CrMo4(1.7225) | SCM430 | 30XM | |
35CrMo | 4135 | 35CrMo4(1.7220) | SCM432/SCRRM3 | 35XM | |
42CrMo | 4140 | 42CrMo4(1.6511) | SCM440 | ||
20CrNiMo | 8620 | 20NiCrMo2-2(1.6523) | SNCM220 | 20XH2M(20HM) | |
40CrNiMo | 4340/E4340 | 36CrNiMo4(1.6511) | SNCM439 | 40XH2MA | |
20CrMnTi | 18X┌T | ||||
20Mn2 | 1524 | SMn420 | |||
40Mn2 | 1340 | SMn438 | 40┌2 | ||
15CrMn | 5115 | 16MnCr5(1.7131) | 18X ┌ | ||
20CrMn | 5120 | 20MnCr5(1.7147) | SMnC420 | 18X┌ | |
20CrMnMo | SCM421 | ||||
Free Cutting steel | Y15 | 1213 | 11SMn30(1.0718) | SUM22 | A12 |
1215 | 11SMn37(1.0736) | SUM22 | A11 | ||
Tube steel | GB/T 8162-2018 | ASTM A519/A530 | DIN17121/ EN 10297-1 | JIS G3441/ JIS G3444/ JIS G3445 | |
GB/T 8163-2018 | ASTM A106 | ||||
GB3639-2021 | DIN1629/ DIN2391 / EN10305-1 | GOST 8733-74 GOST 8734-75 (St.20, 09G2S) |
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GB/T 3094-2012 | ASTM A500/ ASME SA500 | GOST 8645-68/ GOST 8639-82 |
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GB/T3087-2008 | ASTM A179 | JIS G3461/ JIS G3462 | |||
Precision welded tubes | DIN EN10305-2/ DIN EN10305-3 | ||||
Rebar coupler | JG/T 163-2013 | Acorrd to BS4449, B500, ASTM A615 Grade 40/ Grade 60/ Grade 75 |
Design according to usage and processing procedures.
Precision tubes especially for automotive components.
International Alloy steel available(ST52,4130,25CrMo4)
Full range of sizes and high precision.
Trival Order: 3 tons to win trust.
The more order, the better price.
Hexagonal /Triangle /Splined /Trapezoidal/Square/fin tube/ other.
Exactly based on drawing.
Especially thick-wall tubes.
Explore common defects encountered in the production process of seamless steel tubes, along with potential causes and solutions.
The above problems can be solvedby our factory.
Hydraulic system
Fire Fighting Accessories
Fastener - High Strength Nut
Triangular Drill Pipe
Agricultural Drive Shaft
Pre-stressed Anchoring Nut