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Home ProductsHydraulic Cylinder Steel Tube

4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique

China SHANGHAI UNITE STEEL certification
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4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique

4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique
4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique 4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique 4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique 4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique

Large Image :  4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique

Product Details:
Place of Origin: China
Brand Name: UST
Certification: ISO 9001
Model Number: OD: 30-450mm; WT: 2-40mm
Payment & Shipping Terms:
Minimum Order Quantity: MOQ: 3 ton
Price: USD 800- 3000/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: 3000 ton/month
Detailed Product Description
Usage: Hydraulic Cylinder Quality Standard: DIN 2391, EN10305
Surface: Anti-rust Oil Coating Product NameCarbon Steel Tube S255JR: 25CrMo4 Steel Tube
Inspection: The Third Party Inspection Is Acceptable End Protector:: Plastic Pipe Cap
Marking: Request
High Light:

honed cylinder tubing

,

honed stainless steel tubing

4130/25CrMo4/SCM430 Hydraulic Cylinder Steel Tube High Precision Cold Finished Precision Tube

 

OVERVIEW

 

25CrMo4, is alternately classified as structural steel for heat improvement and as a boiler steel designed to work at elevated temperatures. It exhibits very good strength properties, high ductility, weldability and good hardenability. Compared to the 35HM and 34CrMo4 grades, after heat treatment it has slightly worse strengths, but it makes up for the lower properties with much better ductility.

 

25Crmo4 seamless steel pipe/tube is a common chromium molybdenum alloy steel pipe. It contains a lower carbon content compared with 42CrMo4 steel pipe.

 

25Crmo4 seamless steel pipe can be used in the manufacture of the corrosive medium under carburizing and quenching condition.

 

APPLICATIONS


Examples of applications for 25Crmo4 seamless steel pipe include structural tubing, connection rods, stem assemblies, tool holders, tubes for transportation of pressurized gases. It is also mainly used for a variety of applications in the oil and gas industry.
 

STANDARD SPECIFICATIONS

 

Process Honed tube for Hydraulic Cylinder
Shape Round
Size Range

Cold Drawn: 6-426mm OD; 1-40mm WT

Hot Finished: 32-1200mm OD; 3.5-200mm WT

Thickness Upto 200mm
Pipe End Plain / Beveled / Vanished / Plastic Caps
Coating Anti-rust oil on inside and outside surface, plastic caps in both ends.
Length 15 Mtr max Cut to Length available
Heat Treatment Spheroidizing / Full Annealing / Process Annealing / Isothermal Annealing / Normalizing / Quenching / Martempering (Marquenching) / Quench And Tempering / Austempering
Delivery Conditions BK, BK+S, GBK, NBK, etc
Application Oil & Gas / Hydro Carbon Process / Automotive / Boiler, Heat Exchanger / Plumbing, HVAC & Firefighting / Structural / General Engineering / Railways / Sewage & Waterwell
Packing Bundle with steel strip and knitting strip, or wooden case.
Quality Inspection Third Party inspection is acceptable (SGS, BV etc.)

 

TOLERANCE FOR SEAMLESS TUBING

 

Inside Dia (mm) ID Tolerance (mm) WT Tolerance (mm)
H7 H8 H9 H10
≤30 +0.021/0 +0.033/0 +0.052/0 +0.084/0 ±5%
30 - ≤50 +0.025/0 +0.039/0 +0.062/0 +0.100/0
50 - ≤80 +0.030/0 +0.046/0 +0.074/0 +0.120/0
80 - ≤120 +0.035/0 +0.054/0 +0.087/0 +0.140/0
120 - ≤180 +0.040/0 +0.063/0 +0.100/0 +0.160/0
180 - ≤250 +0.046/0 +0.072/0 +0.115/0 +0.185/0
250 - ≤315 +0.052/0 +0.081/0 +0.130/0 +0.210/0
315 - ≤700 +0.057/0 +0.089/0 +0.140/0 +0.230/0
 

 

 

Relavent Standard & Grades Equivalency

 

Country USA EN Japan China
Standard ASTM A519 EN 10305 JIS G3441 GB/T 8162
Grades 4130 25CrMo4 SCM430 30CrMo

 

-ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing

-EN 10297-1 Seamless Circular Steel Tubes for Mechanical and General Engineering Purpose

-EN 10305 Steel Tubes for Precision Applications Technical Delivery Conditions Seamless Cold Drawn Tubes

-DIN 2391 Seamless Precision Steel Tubes

-JIS G3441 Alloy Steel Tubes for Machine Purpose

 

Chemical Requirements, Composition, %

 

Grade C Si Mn P S Cr Mo Cu
4130 0.28~0.33 0.15~0.35 0.40~0.60 ≤0.035 ≤0.040 0.80~1.10 0.15~0.25 /
SCM430 0.28~0.33 0.15~0.35 0.60~0.90 ≤0.030 ≤0.030 0.90~1.20 0.15~0.30 /
25CrMo4 0.22-0.29 ≤0.40 0.60~0.90 ≤0.025 ≤0.035 0.90~1.20 0.15~0.30 /
30CrMo 0.26~0.34 0.17~0.37 0.40~0.70 ≤0.035 ≤0.035 0.80~1.10 0.15~0.25

/

 

 

Mechanical properties

 

  • Tensile strength, Rm > 740 MPa
  • Yield point, Re > 590 MPa
  • Contraction Z > 55%
  • Elongation A > 15%
  • Density = ~ 7,85 g/cm3
  • Notch toughness > 80 J
  • Hardness in softened annealed state < 217 HB

Heat Treatment & Process

  • Soft annealing at 680 - 720℃ with slow cooling in the furnace
  • Normalizing annealing at 860 - 900 °C with slow cooling in air
  • Hardening in oil or water at 840 - 880℃
  • Tempering at 540 - 680 °C with cooling in air
  • Eelief annealing at 650 - 700℃

 

4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique 0

 

Our Services

 

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

 

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

 

4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique 1

 

Package

 

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

4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique 2

 

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!

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FAQ

 

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. 

4130 / 25CrMo4 / SCM430 Hydraulic Cylinder Steel Tube Honing / Skiving Technique 13

Contact Details
SHANGHAI UNITE STEEL

Contact Person: Eric

Tel: 13661534998

Send your inquiry directly to us (0 / 3000)