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Henan Signi Aluminum Co.,Ltd

Addresss:No.89 Science Avenue, National HI-Tech Industry Development Zone, Zhengzhou, Henan

Postal Code:450001.

Tel: +86-371- 55689814, +86-371-55686476

Mob: +86 13673369503

Sales manager: Alex Lu

Fax:+86-371-55686475

E-mail: inquiry@signialuminium.com

3A21 Aluminium Pipe And Tube Electrical Bus Conductors

3A21 Aluminium Pipe And Tube Electrical Bus Conductors

3A21 Aluminium Aluminum Pipe and tube electrical bus conductors is mainly used as overcurrent conductor in power construction projects, such as conductor connection between power grid transmission conductor and transformer substation, jumper in transmission line, connection conductor in power equipment and high current DC ice melting device,... Send InquiryChat Now

Product Details

1,3A21 Aluminium Aluminum Pipe and tube electrical bus conductors

1) Implementation standard: GB/T27676-2011 aluminum and aluminum alloy bus tube pipe conductor or ASTM B 317M-07

2) Product Alloy: 3A21

3) Product Temper: H14

4) The product is hollow tubular structure with glossy surface, beautiful appearance and uniform size.

5)The outer diameter is from 60mm to 450mm.

6)The Wall thickness from 3mm to 15mm.

7) The length of a single bus tube pipe conductor can reach up to 15 meters.

 

2.The Chemical composition and Mechanical properties of 3A21 Aluminium Aluminum Pipe and tube electrical bus conductors

Alloy

Chemical component(%)

Si

Fe

Cu

Mn

Mg

Cr

Zn


Ti

Ni

Other

Al

Each

Total


3A21

≤0.6

 ≤0.7  

0.2

1.0-

1.6

≤0.05

--

≤0.1


0.15

--

≤0.05

≤0.10

Remain

 

Alloy

Temper

Mechanical properties

Tensile Strength(Mpa)

Yield strength

(Mpa)

Elongation

(%)

standard value

measured value

standard value

measured value

standard value

measured value

3A21

H14

≥135

≥160

≥120

≥130

≥4

≥15

 

Property / Alloy

3A21

Density(g/cm³)(20℃)

2.74

Melting point ℃

620-640

Thermal conductivity,

K /℃ x cm x s)

0.46

Electrical Conductivity IACS%

41

Poisson's Coefficient μ

0.305

20℃ Temperature coefficient of electrical  resistance

I/℃

0.0042

20℃ Electrical Resistivity  β,Ω.m㎡/m

0.043

 

3.The external diameter allowable deviation and wall thickness allowable deviation of

3A21 Aluminium Aluminum Pipe and tube electrical bus conductors

3.1 The external diameter allowable deviation (unit: mm)

Nominal  external diameter

>50~75

>75~120

>120~150

>150~200

>200~250

Normal level ±

0.23

0.30

0.40

0.60

0.80

High Precision level ±

0.15  

0. 20

0.30

0.50

0.70

 3.3A21 Aluminium Pipe and tube electrical bus conductors-2

3.2 The Wall thickness allowable deviation (unit: mm)

Nominal Wall Thickness

>3.0~4.0

>4.0~5.0

>5.0~8.0

>8.0~10

>10~15

Average wall thickness and

Nominal Wall Thickness  ±

Normal level

0.30

0.40

0.50

0.70

0.80

High Precision level

0.15

0.15

0.20

0.30

0.40

Any wall Thickness and

Nominal Wall Thickness  ±

Normal level

0.40

0.50

0.60

0.80

1.00

High Precision level

0.20

0.20

0.30

0.40

0.50

 

4.The main performance of 3A21 Aluminium Aluminum Pipe and tube electrical bus conductors as follows:

1) 3A21 Aluminium Aluminum Pipe and tube electrical bus conductors adopts hot-top casting seamless pipe tube etc a series of advanced technology, with smooth surface, high dimensional accuracy, high tensile strength, not easy to discharge and deformation, low power loss, equivalent to 40% of rectangular bus and cable;

2) 3A21 Aluminium Aluminum Pipe and tube electrical bus conductors has excellent machining, welding, conducting and heat resistance. The products were certified by the science and technology department and reached the international advanced level.

3) The convection heat dissipation condition is good, the temperature rise is low, the loss is small, the electrical conductivity is strong, the carrying capacity is big.

4) The installation area is small, and the combined busbar is the 1/3 of the soft conductor installation area.

5) The inner grain structure is compact, the corrosion resistance is strong,and it is not easy to ice coating, the ability to resist disasters is strong, and the service life is long.

6) Easy installation, beautiful appearance, safe, stable and reliable operation, convenient for maintenance.

 

 3.3A21 Aluminium Pipe and tube electrical bus conductors-1

 

5.The usage of 3A21 Aluminium Aluminum Pipe and tube electrical bus conductors:

3A21 Aluminium Aluminum Pipe and tube electrical bus conductors is mainly used as overcurrent conductor in power construction projects, such as conductor connection between power grid transmission conductor and transformer substation, jumper in transmission line, connection conductor in power equipment and high current DC ice melting device,It is a new conductor to replace the traditional rectangular, groove, bar-shaped bus and soft conductor.

It is one of the key equipment (materials) in power transmission and transformation system, and plays a vital role in the safe and reliable operation of power transmission and transformation system and power equipment.

 

6,Common tubular busbar, Liner tube & sealing ball size or sealing cover size.

Main Bus Pipe Tube

Liner Bus Pipe Tube

Sealing ball  or

Sealing cover

OD

(mm)

Wall Thickness

(mm)

OD

(mm)

Wall Thickness

(mm)

OD

(mm)

80

4

71

3

70

90

5

79

4

79

100

5

89

5

89

110

5

99

5

99

120

5

109

5

109

130

7

115

7

115

150

7

135

7

135

150

10

129

10

129

170

7

155

7

155

170

10

149

10

149

200

10

179

10

179

250

10

229

10

229

 

 


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    Henan Signi Aluminum Co.,Ltd

    Addresss:No.89 Science Avenue, National HI-Tech Industry Development Zone, Zhengzhou, Henan

    Postal Code:450001.

    Tel: +86-371- 55689814, +86-371-55686476

    Mob: +86 13673369503

    Sales manager: Alex Lu

    Fax:+86-371-55686475

    E-mail: inquiry@signialuminium.com

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