products

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube

Basic Information
Place of Origin: Jiangsu China (Mainland)
Brand Name: WX SYLAISHI
Certification: SGS ISO ROHS
Model Number: DIN 2391 St30Si
Minimum Order Quantity: 1MT
Price: Negotiable
Packaging Details: standard waterproof package
Delivery Time: 7-10 Days
Payment Terms: L/C, T/T
Supply Ability: 8000MT/Month
Detail Information
Outer Diameter: 300mm Surface Treatment: Grpunded, Peeled, Polished
Oiled Or Non-oiled: Non-oiled Marking: Customers't Requirement
Application: Structure Pipe Thickness: 1 - 20 Mm
High Light:

Mechanical Steel Tube

,

thin wall steel Tube


Product Description

 

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube

Product Description:

Cold drawn seamless mechanical tubing is employed in a variety of uses, particularly when heavy wall thicknesses, specific steel alloys or both are required. Specific applications include bushings, spacers, bearings and other mechanical parts in automobiles, trucks, aircraft and construction, agricultural and drilling equipment, as well as hydraulic cylinders.

Standard
GB/T3639-2000
DIN2391
EN10305
ASTM A519
Metarial
C20 CK45 Q355B Q355D
E355/ST52 SAE1026
4130 4140
STKM 13C
Heat treatment
BK+S
Size
I.D:30mm-400mm
O.D:40mm-480mm
Length
Fixed length
Random length or as requests of customers
Straightness
1/1000
Technology
Honed SRB(SKIVED AND ROLLER BURNISHED)
Scope
Honed tube for hydraulic cylinder,swivel crane,injection machine and construction machine application

  

Chemical Composition:

 

Steel grade

Chemical composition, as a percentage by mass

Symbol

Material number

C
max.

Si
max.

Mn

P
max.

S
max.

St 30 Si

1.0211

0.10

0.30

<=0.55

0.025

0.025

St 30 Al

1.0212

0.10

0.05

<=0.55

0.025

0.025

St 35

1.0308

0.17

0.35

<=0.40

0.025

0.025

St 45

1.0408

0.21

0.35

<=0.40

0.025

0.025

St 52

1.0580

0.22

0.55

<=1.60

0.025

0.025

The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%.

 

Final Supply Conditions:

 

Designation

Symbol

Description

Cold finished (hard)

BK

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

Cold finished (soft)

BKW

The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding).

Cold finished and stress-relieved

BKS

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.

Annealed

GBK

The last cold forming process is followed by annealing in a controlled atmosphere.

Normalized

NBK

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

 

Condition on Delivery:

 

Steel Grade

BK

BKW

GBK

NBK

Code No.

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

St30 Si

400

8

330

12

280

30

290-420

30

St30 Al

400

8

330

12

280

30

290-420

30

St 35

440

6

370

10

315

25

340-470

25

St 45

540

5

470

8

390

21

440-570

21

St 52

590

4

540

7

490

22

490-630

22

 

Detailed Photo:

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube 0

 

Factroy Pictures:

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube 1

 

Pipe & Tube Processing:

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube 2

 

Steel Pipe & Tube Application:

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube 3

Packaging and Shipping:

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube 4

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube 5

Certificates:

Seamless Round Precision Steel Tube , DIN 2391 St30Si Annealed Tube 6

FAQ:

Q1: ARE YOU FACTORY OR TRADER?
A1: Wuxi
Sylaith Special Steel Co.,Ltd is a manufacturer of steel pipe and tube since 2010. We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.

 

Q2: WHICH MATERIAL/PRODUCTS YOU CAN PROVIDE?
A2: Seamless Stainless Steel Pipe / Tube, Seamless Carbon Stainless Steel Pipe /Tube,Galvanized Steel Tube witn any Shape and Welded pipes can also be available.

 

Q3: HOW TO GET A SAMPLE?
A3: FREE samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.

 

Q4:CAN YOU PRODUCE THE PRODUCTS ACCORDING TO MY OWN DRAWINGS?
A4: Yes, we can produce the products according to your drawings that will be most satisfy you.

 

Q5: HOW TO VISIT YOUR FACTORY?
A5: Most of the main cities have flights to Shanghai; you can take flight to Shanghai Putong/Hongqiao International Airport.
If you come from Hongkong, it will take 2 hours by flight (every day 5 flight around noon time).

 

 

 

 

 

 

Contact Details
Deasy

Phone Number : 86-13338118310

WhatsApp : +8613338118310