Seamless Steel Tubes for Hydraulic Cylinders

Seamless Steel Tubes for Hydraulic Cylinders

Seamless steel tubes for hydraulic cylinders are integral to the performance and reliability of hydraulic systems across various industries. These tubes, crafted from high-quality steel grades such as 1020, 1045, 4140, and St52, offer exceptional strength, toughness, and resistance to high pressures, making them ideal for demanding applications in construction machinery, automotive engineering, agricultural equipment, and industrial machinery. With precise manufacturing processes and stringent quality controls, seamless steel tubes ensure the efficient and reliable operation of hydraulic cylinders, enabling smooth movement, lifting, and control in heavy-duty environments. Future Energy Steel provides industry-leading seamless steel tubes tailored to meet the specific needs of your hydraulic systems.

Chemical Composition of Seamless Steel Tubes for Hydraulic Cylinders

Steel Grade	Standard	C (%)	Si (%)	Mn (%)	P (%)	S (%)	Cr (%)	Mo (%)	V (%)
1020	ASTM A519	0.18-0.23	0.15-0.35	0.30-0.60	≤ 0.04	≤ 0.05	–	–	–
1026	ASTM A519	0.22-0.28	0.15-0.35	0.60-0.90	≤ 0.04	≤ 0.05	–	–	–
1045	ASTM A519	0.43-0.50	0.10-0.35	0.60-0.90	≤ 0.04	≤ 0.05	–	–	–
St52	DIN 1629/1630	≤ 0.22	≤ 0.55	1.50-1.60	≤ 0.035	≤ 0.035	–	–	–
C45E	EN 10297-1	0.42-0.50	≤ 0.40	0.50-0.80	≤ 0.035	≤ 0.035	–	–	–
E355	EN 10294-1	≤ 0.22	≤ 0.55	1.50-1.70	≤ 0.025	≤ 0.025	–	–	–
E470	EN 10294-1	≤ 0.22	≤ 0.55	1.60-1.90	≤ 0.025	≤ 0.025	–	–	–
20MnV6	DIN 1629	0.16-0.22	0.10-0.40	1.30-1.70	≤ 0.025	≤ 0.035	–	–	0.08-0.15
4140	ASTM A519	0.38-0.43	0.15-0.35	0.75-1.00	≤ 0.04	≤ 0.04	0.80-1.10	0.15-0.25	–
42CrMo4	EN 10297-1	0.38-0.45	≤ 0.40	0.60-0.90	≤ 0.025	≤ 0.035	0.90-1.20	0.15-0.30	–

Mechanical Properties of Seamless Steel Tubes for Hydraulic Cylinders

Steel Grade	Standard	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)	Hardness (HB)
1020	ASTM A519	≥ 205	345-480	≥ 25	111-152
1026	ASTM A519	≥ 275	415-550	≥ 23	131-179
1045	ASTM A519	≥ 310	565-705	≥ 16	163-197
St52	DIN 1629/1630	≥ 355	490-630	≥ 21	149-187
C45E	EN 10297-1	≥ 310	570-700	≥ 17	163-190
E355	EN 10294-1	≥ 355	490-630	≥ 22	149-187
E470	EN 10294-1	≥ 460	620-780	≥ 19	179-229
20MnV6	DIN 1629	≥ 350	560-780	≥ 20	146-197
4140	ASTM A519	≥ 415	655-855	≥ 20	197-237
42CrMo4	EN 10297-1	≥ 540	750-950	≥ 12	207-241

Specifications

Standard	Seamless Steel Tubes for Hydraulic Cylinders
Steel Grade/Material	1020, 1026, 1045, St52, C45E, E355, E470, 20MnV6, 4140, 42CrMo4
Pipe Standard	EN 10294-1, EN 10297-1, EN 10305-4, ASTM A519, DIN 1629, DIN 1630
Dimension	OD 30 – 406mm x ID 20 – 365mm x WT 5 – 32.5mm x Length 1000-12000mm
ID Tolerance	H7: 0/+0.0150mm H8: 0/+0.027mm H9: 0/+0.043mm
Ra (Roughness Average)	Typical Ra Values: 0.2 to 0.4 µm; Precision Hydraulic Applications: 0.1 to 0.2 µm
Rz (Maximum Roughness Depth)	Typical Rz Values: 1.0 to 3.0 µm; Precision Hydraulic Applications: 1.0 to 2.0 µm
Packing	It ends with plastic caps packed in plywood boxes.
Section Shape	Round
Technique	Seamless hot rolled/cold drawn
Delivery Conditions	As-rolled, Annealed, QT, Normalized
Place of Origin	Made in China
MOQ	3 Tons/Size
Transportation	Railway, By Sea

Hydraulic Cylinder Tube Dimension Table (ID x WT x OD)

Note: The values ​​in the table are OD.

Applications of Seamless Steel Tubes for Hydraulic Cylinders

Seamless steel tubes for hydraulic cylinders are critical components in various industries, offering high performance and reliability in demanding applications. Here are some critical applications:

Construction Machinery

Excavators, Bulldozers, and Cranes: Seamless steel tubes are used in hydraulic cylinders to power the lifting, pushing, and moving functions of construction equipment, ensuring robust performance in harsh conditions.

Agricultural Equipment

Tractors, Harvesters, and Plows: Hydraulic cylinders equipped with seamless steel tubes facilitate efficient lifting and adjustment mechanisms in agricultural machinery, enabling smooth and precise operations in farming activities.

Material Handling Equipment

Forklifts, Conveyors, and Pallet Jacks: Hydraulic cylinders with seamless steel tubes are essential in the lifting and transporting functions of material handling equipment, offering durability and reliability in high-cycle operations.

Automotive Engineering

Suspension Systems and Shock Absorbers: Seamless steel tubes in hydraulic cylinders provide the necessary strength and precision for automotive suspension systems, ensuring a comfortable ride and vehicle stability.

Mining Equipment

Drills, Loaders, and Haulers: Mining operations are rugged, and hydraulic cylinders with seamless steel tubes must withstand high pressure and harsh environments to ensure continuous and efficient equipment operation.

Marine and Offshore Applications

Winches, Steering Gear, and Lifting Systems: Hydraulic cylinders made from seamless steel tubes are used in marine environments where corrosion resistance and durability are paramount, ensuring reliable performance in offshore and shipboard applications.

Industrial Machinery

Presses, Injection Molding Machines, and Metal Forming Equipment: Seamless steel tubes in hydraulic cylinders provide the power and precision required for industrial machinery, enabling accurate and consistent manufacturing processes.

Aerospace Industry

Landing Gear and Flight Control Systems: Aircraft use hydraulic cylinders with seamless steel tubes to manage landing gear deployment and control surface movement. These systems require high strength and reliability under extreme conditions.

Railway and Locomotive Systems

Braking Systems and Suspension: In railway applications, hydraulic cylinders with seamless steel tubes are crucial for braking and suspension systems, offering safety and stability in train operations.

Renewable Energy Systems

Hydroelectric Dam Gates and Wind Turbine Brakes: Seamless steel tubes are used in hydraulic cylinders to control the movement of dam gates and wind turbine brakes, which are vital to renewable energy systems’ efficiency and reliability.