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St45 St37 E235 E355 Galvanized Steel Tube Thin Wall Cold Drawn Oil Cylinder Tube ASTM B633-07

Basic Information
Place of Origin: Jiangsu China (Mainland)
Brand Name: WUXI SYLAITH
Certification: SGS ISO ROHS
Model Number: St45 St37 E235 E355
Minimum Order Quantity: 1 MT
Price: Negotiable
Packaging Details: Exporting package/wooden box package/Or per customers’ requirement
Delivery Time: 3~10 days
Payment Terms: 30%T/T in advance or 100% L/C at sight
Supply Ability: 8000MT/Month
Detail Information
Application: Machinery|Automobile|Atuo|Oil Cylinder Tube|Military|Railway Industry Delivery Condition: Annealed|Normalized|Heat Treatment|BK|BKS|BKW|NBK|GBK
Grade: St45/ St37/ E235/ E355 Product: Thin Wall Galvanized Steel Tube
Surface Treatment: Galvanized Wall Thickness: 0.8-30mm
High Light:

galvanized steel tubing

,

Seamless Steel Tube


Product Description

 

St45 St37 E235 E355 Galvanized Steel Tube Thin Wall Cold Drawn Oil Cylinder Tube ASTM B633-07​ 

 

  Galvanizing can increase the corrosion resistance of steel pipe and prolong its service life. Galvanized pipe USES is very wide, in addition to a general low pressure fluid such as water, gas, oil line pipe, also used as oil industry, especially the ocean oil field oil well pipe, oil pipe, chemical coking equipment of oil heater, the condensing, exchange of coal distillation wash oil cooler for tube, and trestle pile, mining tunnel supporting frame tube, etc.

 

Standard ASTM B633-07
Out Dimensions 6mm – 350mm
Wall Thickness 0.8mm - 30mm
Length Fixed(6m,9m,12,24m) or normal length(5-12m)

 

Description

 

Dimensions of the galvanized tubes for hydraulic and pneumatic lines:

 

Outside diameter ranges from 6 to 350 mm and the wall thickness ranges from 0.8 to 30 mm. Precision steel tubes are delivered according to EN 10305-4, DIN 2391-1, STN 42 6711 and 42 6712, ČSN 42 6711 and 42 6712.

 

Main Features

 

Different color of zinc such as white, yellow, army-green, black is evenly distributed in the surface of the tube, good brightness and antirust and antisepsis could improve after zinc coated.
 

Length of the galvanized tubes:

 

in diameter <= 16 mm  >=6000 + 100 mm
in diameter >= 16 mm  <=24000 + 50 mm

 

Tolerances of the zinc coated tubes

-tolerances of the outside diameter:

diameter between 4 - 30 mm

±0,08 mm

diameter between 35 - 38 mm

±0,15 mm

diameter above 42 mm

±0,20 mm

 

-tolerances of the inside diameter are according to EN 10305-4

-tolerance of the wall thickness ± 10%

 

The Main Steel grades for the zinc coated tubes

 

St 35 / St37.4 / St45 / St44.4 / St 52 / St52.4 / E235, E255,E355
 

DIN 2391 / EN 10305-1/ EN 10305-4

Precision seamless tube and pipe with European&Germany standard

Application:

for Atuo;for machinery use; Oil cylinder tube; Motorcycle shock reducer steel tubes;

Auto shock reducer inner cylinder.

Size(mm):

O.D.:6mm-350mm ; W.T.:1-30mm; L:max 24000

 

Grade and Chemical Composition(%)

 

Grade
 

Chemical Composition(%):

C max

Si max

Mn

P max

S max

St 44.4

0.21

0.35

≥0.40

0.025

0.025

St 37.4

0.17

0.35

≥0.40

0.025

0.025

St 52.4

0.22

0.55

≤1.60

0.025

0.025

 

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

St 44.4

540

5

470

8

390

21

440-570

21

St 37.4

440

6

370

10

315

25

340-470

25

St 52.4

590

4

540

7

490

22

490-630

22

 

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.

 

Galvanized tube category and related standard

 

Galvanized tube category and related standard

Galvanized tube category

Related Standard

Zinc coating thickness

Salt spray test 

Gr3+ Galvanized tube with blue and white zinc

ASTM B633-07
(Type III,SC 1/2/3/4)

5-25um

24--72 hours without white rust;48--168 hours without red rust

Gr3+ Galvanized tube with color zinc

ASTM B633-07
(Type II,SC 1/2/3/4)

5-25um

48--96 hours without white rust;48--240 hours without red rust

Gr6+ Galvanized tube with color zinc

ASTM B633-98
(Type II,SC 1/2/3/4)

5-25um

24--96 hours without white rust;48--124 hours without red rust

 

Applications

 

Zinc coated precision steel tubes (galvanized tubes) are destined for hydraulic and pneumatic pressure distribution (so called HPL tubes), production of automobile components, utility vehicles as well as for production of machine products such as fittings and joints. Cold drawn precision tubes are used as the semi-finished product and they are made from rolled seamless tubes. Precision tubes HPL types are made from carbon and alloyed steel.


Application areas

 

Automotive, military, railway industry, with high requirement of the tubes brightness, cleanness, antirust, and antisepsis.

 

Product Photo

 

St45 St37 E235 E355 Galvanized Steel Tube Thin Wall Cold Drawn Oil Cylinder Tube ASTM B633-07 0
 

Factroy Pictures

 

A192 / A192M Boiler Tubes Seamless Steel Tubes 0.8mm - 35mm Stress Released 1

 

Pipe & Tube Processing

 

A192 / A192M Boiler Tubes Seamless Steel Tubes 0.8mm - 35mm Stress Released 2

 

Application

 

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Packaging & Shippping

 

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A192 / A192M Boiler Tubes Seamless Steel Tubes 0.8mm - 35mm Stress Released 5

 

Certificates

A192 / A192M Boiler Tubes Seamless Steel Tubes 0.8mm - 35mm Stress Released 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
Ava

Phone Number : 18921107008

WhatsApp : +8618921107008