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BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF

Good quality Welded Steel Tube for sales
Good quality Welded Steel Tube for sales
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BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF

China BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF supplier
BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF supplier BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF supplier BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF supplier BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF supplier

Large Image :  BS6323-6 Cold Finished Electric Resistance DOM Steel Tubes with BK , BKW ,GBK , GZF , NBK , NZF

Product Details:

Place of Origin: China
Brand Name: TORICH
Certification: ISO 9001 ISO 14001 EN 10204.3.1 TS 16949 TUV
Model Number: BS6323-6

Payment & Shipping Terms:

Minimum Order Quantity: 5 tons
Price: USD 600-1200 ton
Packaging Details: oil antirust In hexagonal bundles
Delivery Time: 5-8 weeks
Supply Ability: 60000 tons per year
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Detailed Product Description
Material: Carbon Steel Steel Grade: CEW1a CEW2a CEW3a CEW4a CEW5a
Standard: BS6323-6 Shape: Round
Dimension: OD6-350mm *WT1-35mm *Lmax12000mm Applications: For Auto Industry / For Machinery Use/mechanical And General Engineering Purposes
Production Method: Seamless And Welded Characteristic: Cold Finished Electric Resistance Welded

BS6323-6 DOM Steel Tubes Cold Finished Electric Resistance Welded Steel Tubes with BK , BKW , GBK , GZF , NBK , NZF

 

 

Standard: BS6323-6  Seamless and Welded Steel Tubes for Automobile,Mechanical and General Engineering Purposes                                        
Part 6: Specific requirements for cold finished electric resistance welded(including induction welded) steel tubes                        

                
Applications: for Auto industry / for machinery use/mechanical and general engineering purposes                
                                                          
Size range: O.D.:6-350mm     W.T.:1-35mm      L:max12000mm

 

Method of Manufacture:

The tubes are manufactured from flat rolled strip, longitudinally welded continuously by the passage of an electric current across the abutting edges without the addition of filler metal.

They are subsequently cold finished normally on both the inside and outside surfaces, where it is permissble to have both an adherent layer of residual lubricant originating from the drawing process and visible traces of the internal weld upset.

If phosphate or other residues are detrimental to subsequent processing, their removal shall be the subject of an agreement between the manufacturer and purchaser.

 

Delivery Condition:

The tubes are supplied in one of the following condition:

a. Cold finished/hard (cold finished as drawn) : BK

b. Cold finished/soft (lightly cold worked ):  BKW

c. Annealed: GBK

d. Annealed (including de-scaling): GZF

e. Normalized: NBK

f.  Normalized ( including de-scaling): NZF  

It is permissible for tubes supplied in the GBK and NBK conditions to be discoloured, but they shall be free from loose scale.

Where tubes, in the GBK condition are required bright annealed, this shall be the subject of an agreement between the purchaser and the manufactuer.

 

Testing:

Flattening test

Drift expanding test

Leak tightness test.   

 

 

Chemical Compositions and Mechanical Properties

Design
ation

Chemical Compositions( ladle analysis) 

Mechanical Properties

C

Si  

Mn 

S     

BKc 
(cold finished/hard)

BKWc (cold finished/soft )

GBK and GZF                                 (annealed)

NBK and NZF                             (normalized)

 

max.

max.

max.

max.

max.

Re       min.

Rm
min.

A
min.

Re       min.

Rm
min.

A
min.

Re
min.

Rm
min.

A
min.

Re
min.

Rm
min.

A
min.

 

%

%

%

%

%

N/m
m2

N/m
m2

%

N/m
m2

N/m
m2

%

N/m
m2

N/m
m2

%

N/m
m2

N/m
m2

%

CEW1a

0.13

__

0.60

0.050

0.050

320

400

6

245

350

10

150

270

27

155

280

25

CEW2a

0.16

__

0.70

0.050

0.050

355

420

6

260

370

10

160

300

27

195

320

25

CEW3a

0.20

0.35

0.90

0.050

0.050

360

450

6

280

400

9

170

340

26

215

360

24

CEW4b

0.25

0.35

1.20

0.050

0.050

415

520

5

315

450

8

200

400

24

235

410

22

CEW5b

0.23

0.50

1.50

0.050

0.050

480

600

4

385

550

6

__

__

__

340

490

20

 

Tolerance on diameter
diameter Tolerance
over Up to and including
mm mm mm
  30 ±0.10
30 50 ±0.15
50 70 ±0.20
70 90 ±0.25
90 110 ±0.30
110 130 ±0.35
130 160 ±0.45
160 190 ±0.55
190 220 ±0.65
220 250 ±0.75

 

Tolerance on specified cut lengths
Specified cut length Tolerance(mm)
over up to and including
mm mm mm
  500 + 2
- 0
500 2000 + 3
- 0
2000 5000 + 5
- 0
5000 7000 + 10
- 0
7000 __ by agreement
NOTE Closer tolerances may be obtained by agreement between the purchaser and manufacturer.

 

 

Distance between platens for flattening test
Designation Distance between platens
  %
CEW 1 66
CEW 2 75
CEW 3 85
CEW 4 85
CEW 5 85

 

Minimum expansion for drift expanding test
Designation Expansion minimum for tube thickness
Up to and including 4mm Over 4 mm up to and including 8 mm
  % %
CEW 1 12 8
CEW 2 12 8
CEW 3 10 6
CEW 4 8 5
CEW 5 8 5

 

Note: Special steel grade is also available, according to customer request.

 

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Publications referred to:

BS 3601

BS 3602

BS 3603

BS 3604

BS 3605

BS 4360

BS 4848

BS 4848-2

BS 5135

BS 6323

BS 6323-1 

BS 6363

ISO 4200

Contact Details
TORICH INTERNATIONAL CO.,LTD

Contact Person: Richard

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