Our ASTM A519 1020 cold-drawn seamless hydraulic tubes are engineered for high-pressure hydraulic cylinder applications.The smooth inner diameter ensures low friction, reliable sealing, and precise piston movement, while the cold-drawn seamless process provides tight dimensional tolerances and high straightness.This tubing is widely used in hydraulic cylinders, mobile equipment, construction machinery, and industrial systems.
Key Features
·Seamless cold-drawn tubing for high-pressure hydraulic systems
·Standard: ASTM A519, Grade 1020
·Smooth inner diameter for piston sealing & low friction
·Imperial sizing: Ø0.25" – 2", wall thickness 0.065" – 0.250"
·High dimensional accuracy and straightness
·Optional surface treatments: chrome plating, phosphating, or oiled
Technical Specifications
|
Parameter |
Specification |
|
Standard |
ASTM A519 (Seamless Carbon & Alloy Steel Tubing) |
|
Steel Grade |
1020 |
|
OD Range |
Ø0.25" – 2" |
|
Wall Thickness |
0.065" – 0.250" |
|
Delivery Condition |
Cold-drawn, as-drawn |
|
Tolerance |
ASTM A519 standard |
|
Surface Finish |
Smooth ID, oiled / phosphated optional |
|
Length |
Up to 12 m (cut-to-length available) |
Common Sizes
·Ø0.50" x 0.083"
·Ø0.75" x 0.120"
·Ø1" x 0.120" (highlighted product)
·Ø1.25" x 0.145"
·Ø1.50" x 0.188"
·Ø2" x 0.250"
(Custom sizes available on request)
Manufacturing Process
1. High-quality steel billets selected
2. Seamless piercing & extrusion
3. Cold drawing to achieve precise OD and wall thickness
4. Straightening and cutting to length
5. Optional surface treatments – chrome plating, phosphating, oiling
6. Inspection – dimensional, straightness, and NDT if required
Advantages
·High-pressure capability for hydraulic cylinders
·Smooth inner diameter for reliable piston movement
·Consistent dimensional tolerance and straightness
·Wide range of imperial OD and wall thickness options
·Customizable surface treatment options
Applications
·Hydraulic cylinders in construction and mobile machinery
·Pneumatic actuators
·Industrial hydraulic equipment
·Agricultural machinery
·High-pressure fluid systems
Suao is a professional manufacturer of high-precision cold drawn steel tubes, hydraulic tubes, and mechanical structure tubes, integrating R&D, production, inspection, and global sales. We operate two major production facilities covering over 36,000 square meters, with more than 200 employees and an annual output of 50,000+ tons, supplying customers across major industrial markets worldwide. As Suppliers of Cold-Drawn Seamless Hydraulic Tube – ASTM A519 1020, Ø1" x 0.120", Smooth ID for Hydraulic Cylinders, our integrated manufacturing capabilities include cold drawing, heat treatment, straightening, finishing, cutting, chamfering, and surface treatment. These are supported by a full range of advanced equipment for non-destructive testing, chemical analysis, and online dimensional monitoring—ensuring every tube meets stringent quality standards. We invest continuously in automation and smart manufacturing systems to enable flexible, high-mix, low-volume production. Custom Cold-Drawn Seamless Hydraulic Tube – ASTM A519 1020, Ø1" x 0.120", Smooth ID for Hydraulic Cylinders. Our products are widely used in construction machinery, hydraulic systems, automotive parts, wind energy, shipbuilding, railways, and oil & gas sectors. Certified to ISO 9001, ISO 14001, CE, and RoHS standards, Hongli is more than a manufacturer—we are a trusted long-term partner for global industrial clients.
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