China Seamless Steel Tube Manufacturers Suppliers Factory - OEM Seamless Steel Tube

Your Professional Seamless Steel Tube Manufacturer

Wuxi Yushen Hydraulic Equipment Co., Ltd. was established in 1990. The company integrates product research and development, production, manufacturing, processing, operation, sales, and technical services. Our company specializes in the production of precision long shafts, piston rods, hollow rods, multi-stage cylinder piston rods. It is manufactured with advanced technology such as peeling, barreling and straightening, precision, high-precision polishing, electroplating-type plating cylinder, and bleeding (hollow piston rod obtained national patent ZL201720904689.X), and all indicators have reached national and international advanced levels. It can be directly used in mechanical guide rods, guide rails and other products such as oil cylinders, air cylinders, shock absorbers, linear guides, etc., with complete metric and inch specifications.

Why Choose US

Product Application

Our company Products are widely used in metallurgy, chemical industry, textile, shipbuilding, military industry, construction machinery, transportation logistics, auto maintenance equipment, rubber machinery and other industries.

Advanced Equipment

Our Company is provided with the advanced production and processing equipment, measuring instruments and the first-rate working environment, thus making this enterprise have a stronger production capability and market competitiveness.The equipment covers a wide range of processes, including turning, grinding, cold drawing, tempering, quenching and tempering, electroplating, gantry machining center, and welding.

Professional Team

YS Hydraulic focuses on precision cold drawn steel tube,honing hydraulic cylinder tube/ pipe,anchor drill and hydraulic cylinder research and producing, after years of practice, has the abundant technical force and the good team.Our design team is experienced in product design and development.

Excellent service

The company always puts quality in the first place, has a complete after-sales service system, and is guided by technology, backed by talents, and wholeheartedly provides high-quality products and services to new and old customers at home and abroad.

Chrome Plated Steel Pipe Hydraulic Cylinder Tube
Chrome Plated Steel Pipe Hydraulic Cylinder Tube is a chrome-plated steel pipe for hydraulic cylinders. Made of high-quality steel, it's precision-processed and chrome-coated. This plating gives it
High Precision Seamless Honed Tube
High-precision seamless honed tube is a seamless cold-drawn/cold-rolled steel tube specifically manufactured for high precision, high wear resistance, and high sealing requirements.
Hydraulic Cylinder Honed Tube
Hydraulic Cylinder Honed Tube is a precision machined tube used for the inner barrel of hydraulic cylinders. Hydraulic Cylinder Honed Tube is specially treated to meet the stringent requirements of
ST52 Honing Tube for Hydraulic Cylinder
ST52 Honing Tube for Hydraulic cylinder is an essential component for manufacturing hydraulic cylinders. The ST52 honing tube is used in the honing process, which is a finishing process used to
DIN2391 ST52 Seamless Honed Tubes
DIN2391 ST52 Seamless Honed Tubes are precision steel tubes commonly used in hydraulic and pneumatic cylinder blocks. These pipes are precision machined with a high degree of finish and a virtually
Precision Honed Steel Tube ST52
Precision Honed Steel Tube ST52 is a high-precision steel tube commonly used in hydraulic and mechanical applications. It has excellent surface smoothness and dimensional accuracy and is suitable for
ST52 Honed Cylinder Tube
ST52 Honed Cylinder Tube (ST52 Precision Smooth Hydraulic Cylinder Tube) is a precision steel tube used in hydraulic and pneumatic systems, primarily in hydraulic cylinders, pneumatic cylinders, and
H9 Hydraulic Cylinder Steel Honed Tube
Honed pipe is a seamless pipe that has been honed to create a smooth surface finish. The process involves using a pumice stone or diamond grit to remove any surface imperfections, resulting in a
ASTM A106 DIN2391 ST52 Honed Tube Honing Pipe
ASTM A106 and DIN2391 are two common steel pipe standards, while ST52 is a commonly used steel grade. Honed Tube (bright steel pipe) is a steel pipe that has been brightly processed and polished and
Honed Tube Stainless for Hydraulic Cylinder
Honed tubes are a type of seamless tube that has undergone a honing process to create a smooth surface finish. This process involves using abrasive stones or diamond grit to remove any surface
Steel Hydraulic Honed Tube
Steel Hydraulic Honed Tube is a key component used in hydraulic and pneumatic cylinder blocks with smooth inner surfaces and high precision dimensions.
Seamless Steel Pipe Honed Tube
Seamless Steel Pipe Honed Tube is an important component in various industrial applications. Widely used in hydraulic, pneumatic cylinders, auto parts and other mechanical systems. A honed tube is a

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Types of Seamless Steel Tube

ST52 Honing Tube for Hydraulic Cylinder

ST52 Honing Tube for Hydraulic cylinder is an essential component for manufacturing hydraulic cylinders. The ST52 honing tube is used in the honing process, which is a finishing process used to improve the surface finish of the inner diameter of a hydraulic cylinder.

DIN2391 ST52 Seamless Honed Tubes

DIN2391 ST52 Seamless Honed Tubes are precision steel tubes commonly used in hydraulic and pneumatic cylinder blocks. These pipes are precision machined with a high degree of finish and a virtually defect-free interior surface.

Precision Honed Steel Tube ST52

Precision Honed Steel Tube ST52 is a high-precision steel tube commonly used in hydraulic and mechanical applications. It has excellent surface smoothness and dimensional accuracy and is suitable for various industrial fields.

ST52 Honed Cylinder Tube

ST52 Honed Cylinder Tube is a high quality steel tube commonly used in hydraulic and pneumatic cylinder blocks. This tube is precision machined and polished to ensure its inner surface is extremely smooth, reducing friction and improving sealing performance.

H9 Hydraulic Cylinder Steel Honed Tube

Honed pipe is a seamless pipe that has been honed to create a smooth surface finish. The process involves using a pumice stone or diamond grit to remove any surface imperfections, resulting in a uniform surface finish.

Honed Tube Stainless for Hydraulic Cylinder

Honed tubes are a type of seamless tube that has undergone a honing process to create a smooth surface finish. This process involves using abrasive stones or diamond grit to remove any surface imperfections, resulting in a uniform surface finish.

Advantages of Seamless Steel Tube

- Lightweight:
Seamless steel pipes are notably lightweight, weighing only one-fifth of square steel.

- Corrosion Resistance:
These pipes are resistant to corrosion caused by acids, alkalis, salts, and atmospheric conditions. They also exhibit high-temperature resistance, good impact resistance, and fatigue resistance, requiring no regular maintenance with an effective service life exceeding 15 years.

- High Tensile Strength:
Seamless steel pipes boast tensile strength that is 8 to 10 times greater than ordinary steel. They also have a superior elastic modulus, offering excellent creep resistance, corrosion resistance, and earthquake resistance.

- Mechanical Properties:
They have excellent mechanical properties, making them easy to machine.

- High Elasticity:
Seamless steel pipes are highly elastic, can be reused in mechanical equipment, have no memory, do not deform, and are antistatic.

Specification

Material	API5L,Gr.A&B, X42, X46, X52, X56, X60, X65, X70, X80, ASTM A53Gr.A&B,ASTM A106 Gr.A&B, ASTM A135, ASTM A252, ASTM A500, DIN1626, ISO559, ISO3183.1/2, KS4602, GB/T911.1/2,SY/T5037, SY/T5040 STP410,STP42.
Certificates	API5L ISO 9001:2008 TUV SGS BV etc
Outside Diameter	1/2'--24'
Outside Diameter	21.3mm-609.6mm
Thickness	SCH5S, SCH10S, SCH20S,SCH20, SCH30,STD, SCH40, SCH60, SCH80, SCH100, SCH140, SCH160,XS,
Thickness	1.65mm-59.54mm
Length	5.8m 6m Fixed, 12m Fixed, 2-12m Random.
Technic	1/2'--6': Hot piercing processing technic
Technic	6'--24' : Hot extrusion processing technic
Surface Treatment	Black Painted, Galvanized, Natural, Anticorrosive 3PE coated,polyurethane foam Insulation .
Packing	Bundles or In bulk. bundled pipes with two slings at the both End for easy loading and discharging,
End	Bevel end(>2"), Plain (≤2"),with plastic cap, with screwed and socket.

Tolerances of Seamless Steel Pipe

Pipe types	Pipe sizes(mm)	Tolerances
Hot rolled	OD<50	±0.50mm
	OD≥50	±1%
	WT<4	±12.5%
	WT 4～20	+15%, -12.5%
	WT>20	±12.5%
Cold drawn	OD 6～10	±0.20mm
	OD 10～30	±0.40mm
	OD 30～50	±0.45
	OD>50	±1%
	WT≤1	±0.15mm
	WT 1～3	+15%, -10%
	WT >3	+12.5%, -10%

How to Customize Seamless Steel Tube

Material Selection

The first step in customizing a seamless carbon steel pipe is selecting the appropriate material grade. Carbon steel pipes come in various grades, each with its unique properties and suitability for specific applications. The choice of material grade depends on factors such as the intended use, operating conditions, and the presence of corrosive elements. Common material grades for seamless carbon steel pipes include ASTM A106, ASTM A53, and API 5L.

Size and Shape Modifications

Customizing the size and shape of a seamless carbon steel pipe allows it to fit seamlessly into a particular project or system. The modification process can involve cutting, bending, or reshaping the pipe. Depending on the complexity of the modifications, specialized tools such as pipe cutters, tube benders, or hydraulic presses may be required. It is essential to maintain the structural integrity of the pipe during size and shape modifications to ensure its performance and longevity.

Surface Treatments

Surface treatments play a crucial role in enhancing the performance and longevity of seamless carbon steel pipes. They can provide protection against corrosion, improve aesthetics, and ensure optimal functionality. Some common surface treatments for carbon steel pipes include:
a. Coatings: Applying protective coatings such as epoxy, polyethylene, or zinc can significantly enhance corrosion resistance. Coatings act as a barrier, preventing moisture and corrosive substances from reaching the pipe's surface.
b. Galvanization: Galvanizing involves coating the pipe with a layer of zinc through a hot-dip process. This treatment offers excellent protection against corrosion, making galvanized seamless carbon steel pipes ideal for outdoor and high-moisture environments.
c. Passivation: Passivation removes surface impurities and forms a protective layer on the pipe's surface. It enhances the pipe's resistance to corrosion and improves its cleanability.
d. Painting: Painting the pipe's surface provides an added layer of protection against corrosion while also allowing customization for aesthetic purposes. Proper surface preparation and the use of high-quality paint are crucial for achieving durable and long-lasting results.

Additional Features

Customization of seamless carbon steel pipes can also involve the incorporation of additional features or components to meet specific project requirements. These features may include:
a. Threads and Couplings: Adding threaded ends or couplings allows for easy connection and disconnection of pipes, simplifying installation and maintenance processes.
b. Flanges: Flanges are used to create connections between pipes, valves, or equipment. Customizing the flange type, size, and material can ensure compatibility and facilitate secure connections.
c. Fittings: Custom fittings, such as elbows, tees, or reducers, can be added to modify the pipe's direction, diameter, or branching, enabling it to adapt to complex piping systems.
d. Lining and Insulation: In some applications, seamless carbon steel pipes may require additional lining or insulation to protect against corrosion, temperature variations, or to meet specific industry standards.

Quality Control and Testing

Throughout the customization process, quality control and testing play a critical role in ensuring the reliability and performance of customized seamless carbon steel pipes. Non-destructive testing methods, such as ultrasonic testing or X-ray inspection, can be employed to detect any defects, cracks, or imperfections that may compromise the pipe's integrity. Additionally, pressure testing is often conducted to verify the pipe's strength and leak resistance.

The Common Application Areas of the Seamless Steel Pipes

Fertilizer industry
Steel seamless pipes come in handy in several sectors of the fertilizer industry. The regions of application of the lines in the fertilizer industry mainly include piping system equipment, high-pressure tubes in Melamine plants, and heat exchanging systems in Urea synthesis ethylene plants.

Power Generation Industry and Environmental Technologies
Steel seamless pipes and tubes are used primarily as heat exchangers in giant power plants and the energy department. Environmental uses and waste incineration plants also utilize the same application style known as reheater superheaters.

Chemical and Petrochemical Industries
Steel seamless plants prove highly useful in chemical and petrochemical industries. The area of application in the chemical and petrochemical sectors mainly includes the following: High-pressure pipes in Melamine plants, elaborate piping systems and heat exchanging systems of urea synthesis ethylene plants.

Curate Ship-building Parts for International Clients
Various processes of ship-building require the use of steel seamless pipes and tubes. While it is difficult to export a readymade ship, it is comparatively easier to export parts that will be used to build the ship. As per the request of international dealers, a variety of steel seamless pipes are exported to distant lands. These tubes are then used in the manufacturing process of shipbuilding.

Oil and gas Industries
Steel seamless pipes are a common requirement for oil casing and tubing for offshore and onshore Oil & Gas transfer. The oil extracted offshore needs large tubes to be transferred from one reservoir to another. Not all materials can support unprocessed raw oil. Steel seamless pipes are a perfect application for such purposes.

Other Services

Payment terms
Commonly two payment term for new customers:
1) 30% T/T as deposit , 70% balance against B/L copy;
2) 100% Irrevocable L/C at sight;If you need any other terms, pls feel free to contact us too.

Packaging

Package	Standard export seaworthy package,suit for all kinds of transport, or as required.
Package	Water-proof Paper + Edge protection + Wooden Pallets
Bulk Size	Any size
Loading Port	Shanghai / Ningbo
Container	1 x 20ft container load Max. 25 Ton, Max. length 5.8m
Container	1 x 40ft container load Max. 30 Ton, Max. Length 11.8m
Delivery Time	About 2 weeks or according to the order's quantity

Shipping
Our customers have a wider range of processing choices for transportation
By Express ( FedEx, UPS, DHL, TNT, EMS, etc... )
- Advantage: Fast ( takes about 7 - 10 days in the delivery ), door to door.
By Air Transportation
- Advantage: Fast ( takes about 8 - 12 days ), a little cheaper than Express.
By Sea ( Ocean ) Transportation
- Advantage: Much cheaper than Express or Air transportation.

FAQ

Q: What is seamless steel tubing?

A: Seamless tubes are as defined – they do not have a welded seam. The tubing is manufactured through an extrusion process where the tube is drawn from a solid stainless steel billet and extruded into a hollow form.

Q: What is the difference between seamless and non seamless pipe?

A: A seamless steel pipe has no seams, as the name indicates and produced via hot rolling and cold rolling. A welded pipe, on the other hand, is made by rolling of a steel coil to the required gauge thickness, a manufacturing procedure that leaves a seam on the pipe's body.

Q: How do you make a seamless tube?

A: The billets are heated and then formed into oblong circular molds that are hollowed in a piercing mill. While they're still hot, the molds are drawn through a mandrel rod and elongated. This increases the length of the mold by twenty times to form the seamless tube shape.

Q: What is the most preferred process for making seamless pipe?

A: The majority of the seamless pipes are produced by piercing and rolling or by extrusion. 0.3 Piercing of a billet which may be of round or rectangular (gothic) cross- section may be done (a) on a Piercing Press or (b) in a Press Piercing Mill or (c) in a Rotary Piercing Mill.

Q: What are seamless steel pipes used for?

A: Seamless steel pipe is regularly used in the transportation of fluids such as water, natural gas, waste and air. It is also regularly required in many high-pressure, high-corrosive environments such as in the oil & gas, power generation and pharmaceutical industries.

Q: What are seamless steel tubes for structural purposes?

A: Seamless steel tube for structural purpose is mainly divided as carbon structural steel tube and high-strength low-alloy structural steel tube; it is mainly used for mechanical structures and, seamless steel pipe for general engineering purposes.

We're professional seamless steel tube manufacturers and suppliers in China, specialized in providing high quality custom service and OEM service. We warmly welcome you to buy high-grade seamless steel tube in stock here from our factory.

5 3 ls forged pistons and rods