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DIN 2391 ST35 BK Thick Wall High - Precision Steel Tube , Round Cold Rolled Pipe

HAINER STEEL INDUSTRIAL CO.,LIMITED

DIN 2391 ST35 BK Thick Wall High - Precision Steel Tube , Round Cold Rolled Pipe

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Brand Name : Cosco Steel

Model Number : St35, St37, St45, St52, E235, E355 etc

Certification : ISO,SGS,CQC,etc.

Place of Origin : China

MOQ : 500Kgs/ one size

Price : Negotiation

Payment Terms : T/T, L/C at sight

Supply Ability : 600Tons/Month

Delivery Time : 20-25 days

Packaging Details : Plastic bag in bundle,Wooden box,etc.

Surface Treatment : Oiled

Type : Seamless

Technique : Cold Rolled

Grade : 20#,45#,16Mo,16Mn,A106(B,C),St37,St52,Q345,10#-45#,Mo,A53-A369,ST35-ST52,Q195-Q345

Standard : BS 1387,JIS G3461-2005,BS,JIS

Thickness : 8 - 40 mm

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DIN 2391 ST35 BK Thick Wall High - Precision Steel Tube , Round Cold Rolled Pipe

Quick Detail:

  • Grade:20#,45#,16Mo,16Mn,A106(B,C),St37,St52,Q345,10#-45#,Mo,A53-A369,ST35-ST52,Q195-Q345
  • Standard:BS 1387,JIS G3461-2005,BS,JIS
  • Section Shape:Round
  • Thickness:8 - 40 mm
  • Outer Diameter: 10 - 168 mm
  • Application:Structure Pipe
  • Technique:Cold Rolled
  • Certification:CE
  • Special Pipe:Thick Wall Pipe
  • Alloy Or Not:Non-alloy

Description:

  1. Product Item No.: 005Precision-Cosco Steel
  2. Grade: St37,St52,St45,St35.8,St37-2,St35.4,St52.4,St45-4,ST35,ST37.4,ST54,ST35-ST52
  3. Standard:JIS G3445-2006,DIN 1626,DIN 2391,DIN 17175,DIN EN 10305,DIN 2448,ANSI A210-1996,JIS,GB,DIN,ASTM
  4. Certification: ISO 9001/ TS 16949
  5. Alloy Or Not:Non-alloy
  6. Standard::for high pressure pipe
  7. Certificate: ISO9001 TS16949
  8. Delivery condition::BK, GBK, BKW, BKS or NBK for high pressure pipe

Standard:

China Standard GB8162-2008, GB3639-2000

American Standard ASTM A106, ASTM A519, ASTM A513,ASTM A179

Germany Standard DIN2391, DIN2445

Japanese Standard JIS G3445 etc

European Standard EN10305

Specification

Designation

Symbol

Description

Cold finished (hard)

BK(+C)

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

Cold finished (Soft)

BKW
(+LC)

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(+SR)

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(+A)

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

Normalized

NBK(+N)

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

DIN 2391 Precision seamless steel tube

This Standard applies to seamless precision steel tubes; and, in compliance with ISO/DIS 3304, those tube dimensions have een selectied from the range of manufactura le tu e dimensions which are mainly used as design elements

If tubes having the tolerances and are produced according to the technical conditions of deivery as specified in this Standard are to e used as pipelines, then the dimensions specified in DIN 2448 may from time to time be used. These tubes must be ordered according to quality grade C.

Grade

Mfg. Process

Chemical composition

C

Si

Mn

P

S

Ni

Cr

Mo

Others

St30Si

S

0.10Max

0.30Max

≤0.55

0.040Max

0.040Max

-

-

-

-

St30A1

S

0.10Max

0.05Max

≤0.55

0.040Max

0.040Max

-

-

-

Al deoxydized

St35

S

0.17Max

0.35Max

≥0.40

0.050Max

0.050Max

-

-

-

-

St45

S

0.21Max

0.35Max

≥0.40

0.050Max

0.050Max

-

-

-

-

St52

S

0.22Max

0.55Max

≥1.60

0.050Max

0.050Max

-

-

-

-

①Cold-finished/hard ②Cold-finished/soft ③Annealed ④Normalized

Grade

Material
number

Tensile Test MPa or N/mm2

Remaks(Similar to JIS)

Possibility Temperature

Min Yield point

Tensile Strength

St30Si

1.0211

-

400Min

(STKM11)

-

355Min

-

285Min

215

295~420

St30Al

1.0212

-

400Min

(STKM11)

-

355Min

-

285Min

215

295~420

St35

1.0308

-

440Min

(STC38)

-

370Min

-

315Min

235

340~470

St45

1.0408

-

540Min

(STKM13)

-

470Min

-

390Min

255

440~570

St52

1.0580

-

590Min

(STKM19)

-

540Min

-

490Min

350

490~630

Applications:


1. Automotive fields
A. Fuel injection lines/nozzles
B. CNG (Compressed Nature Gas) tube-- Burst pressure: 1307Bar, Working Pressure: around 350bar
C. Drive transmission: Steering column elements
D. Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel drive shafts

2. Hydraulic Fields
A. Hydraulic circuits (HPL), pneumatic lines, and hydraulic suspension system
B. Hydraulic cylinders (HPZ)

Our advantage

We owned special equipment for manufacturing various high precision products

  1. High-precision cold drawing unit
  2. Bright annealing oven
  3. Straighter
  4. 100% UT inspection if buyer requested
  5. 100% ET inspection if buyer requested

DIN 2391 ST35 BK Thick Wall High - Precision Steel Tube , Round Cold Rolled Pipe


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