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CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface

China SHANGHAI UNITE STEEL certification
China SHANGHAI UNITE STEEL certification
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CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface

CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface
CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface

Large Image :  CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface

Product Details:
Place of Origin: China
Brand Name: UST
Certification: ISO 9001
Model Number: WT: 1-40mm;OD: 6-426mm
Payment & Shipping Terms:
Minimum Order Quantity: MOQ: 3 ton
Price: USD 700- 2000/ton
Packaging Details: Plastic plugs in both ends, Hexagonal bundles of max 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.
Delivery Time: Within 15-35 days
Payment Terms: L/C, T/T, D/A, D/P
Supply Ability: 1000 ton/month
Detailed Product Description
Section Shape: Round Surface: Black, Bright, Smooth
Certificate: SGS IAF ISO CNAS End Protector:: Plastic Pipe Cap
High Light:

ST35.8 Hydraulic Cylinder Steel Tube


CNAS Hydraulic Cylinder Steel Tube


CNAS honed stainless steel tubing

St35 Hydraulic Cylinder Steel Tube Hign Precision Honing and Skiving Pipe





We are distributors, Dealers, stockists, exporters and suppliers of world class ST35 & ST 35.8 steel pipe and we deliver these pipes to our clients located in all corners of the globe. To ensure that our ST 35 steel pipes meet the highest quality standards, we manufacture them using the highest quality raw materials and we also run them through the most rigid quality parameters. We also supply our clients with Material Test Certificates (MTC), as per EN 10204 3.1 and EN 10204 3.2. For all your needs for EN 10305 ST 35 steel pipe, no matter where you might be located in the world, be sure to contact us, we assure you of the best price and the best quality and service.



  • DIN 2391 ST 35 steel pipe are also called mild steel tubes or mild steel pipes. These pipes and tubes are very popular as they cost less.
  • Another reason why these Mild Steel pipes and tubes are in very big demand is because they are easy to shape & form.
  • ST35 mild steel pipes have a minimum manganese content of 40% and a maximum carbon content of 17%.
  • ST 35 carbon steel tubes are manufactured by the cold rolled process or by the cold drawn process.
  • ST 35 steel pipe are commonly known as MS pipes or CS pipes and they are manufactured by us in accordance with DIN Specifications.
  • ST35 steel tube are not as hard as carbon steel pipes, but with the process of carburizing, it is possible to increase their surface hardness. These pipes have the capacity to withstand very high pressures and they also have high-temperature resistivity.
  • ST 35 pipes can be procured from us in various forms, sizes, shapes and thicknesses and they are also tailor-made by us, to meet specific needs of clients.
  • We provide these ST 35 steel pipes in accordance with the specific needs of customers and pack them as per the requirements of customers, for export orders, to any place in the world. To build these pipes and tubes, we make use of the very latest cutting edge technology.
  • Our DIN 2391 ST35 steel pipes are highly efficient, extremely durable and they are available at very affordable prices.

CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 0



ST 35 steel pipes are used in various industries like aerospace industry, steel industry, electronic industry, sugar industry, chemical industry, food industry, soap industry, etc.


ST35.8 pipe are primarily used where there is a need for good surface condition, small wall thickness and accuracy to dimension. These steel pipes are used in pneumatic cylinders, hydraulic cylinders, automotive engineering, mechanical engineering and various other industries and applications. ST35.8 pipes are essentially seamless steel pipes that are used in tank construction, high pressure piping and boiler installations. These pipes are also used in special machinery that is used in high pressure installations and high temperature installations.




Description DIN 2391 ST 35 ST 35.8 Honed Tube
Supply Capacity 3000 tons/month
Process Method Cold Drawn or Cold Rolled
Outer Diameter 6-426mm
Wall Thickness 1-40mm
Length SPECIFIC OR AT RANDOM as required, 15 Mtr max, Cut to Length Available
Standards EN 10305, DIN 2391, JIS G3445
Surface Black, smooth, turned, peeled, grind, polished, oiled and painted surface or other anti-corrosive treatment per customers’ requests
End Beveled, plain end, vanished or plastic caps
Packing 1.with plastic cap to protect both ends
2.plastic bag wrapped outside the pipe
3.bundles to be covered by polythene & strapped securely .
Certificate Third Party inspection is acceptable (SGS, BV etc.)
Delivery time Shipped in 15-35 days after payment
Trade Term FOB CFR CIF





I.D tolerance (mm) O.D tolerance (mm) Straightness (mm)
H9-H12 -/+0.5% 0.20-0.80









Cold finished/ hard


Tubes do not undergo heat treatment following the final cold forming and thus have a rather high resistance to deformation

Cold finished/ soft


The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming

Cold finished and stress relieved


Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree



The last cold forming process is followed by anneling above the upper transformation point in a controlled atmosphere



The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.


Relavent Standard & Grades Equivalency



Steel Grade GB China JIS Japan ASTM America Din German
Steel Grade Steel Grade Steel Standard Steel Grade Steel Grade Material Steel Standard
Carbon Steel Pipe/Tube (Q235)Steel Pipe/Tube GGP STPY41 G3452 G3457  (A53 F) A283-D (St33) 1.0033 DIN1626
10#Steel Pipe/Tube STPG38 G3454



(St37) 1.0110 DIN1626
STPG38 G3456 A106-A St37-2 1.0112 DIN17175
STS38 G3455   St35.8 St35.4 1.0305 1.0309 DIN1629/4
STB30 G3461 A179-C A214-C St35.8 1.0305 DIN17175
STB33 G3461



St35.8 1.0305 DIN17175
STB35 G3461   St35.8 1.0305 DIN17175
20#Steel Pipe/Tube STPG42 G3454



(St42) St42-2 1.0130 1.0132 DIN1626
STPT42 G3456 A106-B St45-8 1.0405 DIN17175
STB42 G3461 A106-B St45-8 1.0405 DIN17175
STS42 G3455 A178-C A210-A-1 St45-4 1.0309 DIN1629/4

Chemical Requirements, Composition, %


Standard Grade C Si Mn p S
DIN 2391 ST35 0.17max 0.35max 0.40min 0.025max 0.025max


Mechanical Properties


Delivery Condition Cold Finished (BK) Stress relieved (BKS)
Rm Elongation Rm ReH Elongation
St 35 ≥480 ≥6 420 315 14




CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 1


Inspection and test list for the DIN 2391 Standard


Inspection or test types Test frequency
Internal test Acceptance test
Chemical analysis M M
Tensile testing M One per tested batch
Flattening test or extension test M Two per tested batch
Dimension verification M M
Visual inspection M M
NDT in order to identify leaks Individual Individual


What we can offer?


-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.


Quality Assurance


CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 2

Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT; 
(5) eddy current flaw detection-ET





In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or upon request

CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 3


Payment & Delivery


1. Both T/T and L/C will be acceptable

2. Trade Terms: FOB, CIF, CFR

3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples


Company Information


Shanghai Unite Steel Trading Co., Ltd

We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!

CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 4CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 5CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 6CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 7CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 8CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 9CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 10CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 11CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 12CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 13


Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price. 
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come. 


CNAS ST35.8 Hydraulic Cylinder Steel Tube Smooth Surface 14


Contact Details

Contact Person: Anndy

Tel: +8615502127172

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