Pre-Stressed Concrete Spun Pole Production Line

Pre-stressed Concrete Spun Pole Production Line is designed in accordance with annual production capacity of 36, 000PCS various medium-sized cone pre-stressed steel concrete poles.

As far back as the 1930s, the People's Republic of China used armored concrete pole. With the rapid development of power industry, the production and use of concrete pole has developed tremendously thereupon.

Pre-stressed concrete pole develops rapidly because of much superiority. Compared with common concrete pole, its advantage is as follows:
Economizing steel in a large amount, about 30%~70% (adopting cold drawing can economize 30%~60%; In case of steel wire of high strength, economize 40%~69%);
Crack resistance is improved by 3~5 times;
Steel performance can be improved by 1~3 times;
Reduction of cost (adopting cold drawn wire can economize 25%~40%; In case of steel wire of high strength, economize12%~21%);
Good endurance can delay the appearance and expansion of cracks;
Protecting the environment that mankind depends on for existence, and reducing deforestation.

Pre-stressed concrete poles are strictly in accordance with two standards: GB396-94 Annular Armored Concrete Pole and GB4623-94 Annular Pre-stressed Concrete Pole of the People's Republic of China.

Technology Characteristics
1. The proportioning and the measurement of concrete should be accurate;
2. The error resulting from alignment and cutting length of reinforcing steel bar should reach 1.5/10000;
3. Tension strength of the reinforcing steel bar should reach 75% of its tensile strength;
4. Demoulding strength of pole should reach 70% of design strength for concrete.

Equipment List
No. Name and Specification Quantity
1 Various types of pole steel mould 70
2 Various types of anchorage device 140
3 Centrifuge 4
4 Speed regulating motor (37KW) 4
5 Microcomputer motor control cabinet 4
6 Tensioning machine (60T) 2 Tensioning machine (30T) 4

7 Tensioning rod 20
8 Model-50 oil pump 10
9 Heading machine 10
10 Steel bar straightening-cutting machine 2
11 2500, 2T steel wire roll unfastening device 2
12 Reeling machine (inner and outer ring) 2
13 Air pressure gun for mould closing 30

14 Air compressor 10m3 2
15 Mixing station 2
16 Material supply vehicle 4
17 10T Double beam traveling crane 2
18 5T Double beam traveling crane 1
19 Curing pool (brick-concrete structure) 4

20 5T Steam boiler 1
21 300KVA Transformer 1
22 Distribution control cabinet 1
23 Embedded parts for poles 40
24 Traveling crane rail 38Kg/m 1500m

Lab Equipment List
No. Name Specification Qty
1 Balance 5Kg sensitive quantity 1g 1
2 Bench scale 5Kg sensitive quantity 5g 1
3 Platform balance 50~100Kg sensitive quantity 50g 1
4 Cement standard screen 4, 900 holes/cm2 1

5 Screen for sand 0.16, 0.315, 0.63,
1.25, 2.5, 5.0mm 1
6 Screen for carpolite 2.5~40mm 1
7 Dry oven 105± 5C 1
8 Thermometer 0~100C 1
9 Vernier caliper (double function) 1
10 Standard consistency apparatus 1

11 Tension dynamometer 5t (used for pole) 2
12 Concrete die setting 150*150*150cm trilink 6
13 Centrifugal mode (used in pole) 1
14 General material testing machine 60t 1
15 Standard curing box Or standard curing room 1

16 Concrete collapse tubular mould 100/200*300mm 1
17 Standard vibration table 550x550mm or
1000x1000mm 1
18 Scale microscope 1
19 Volume tube 1
20 Resiliometer 1

21 Press 1
22 Mini concrete mixer 1
23 Electric shaker 1
24 Standard funnel 1
25 Cement consistence test mixing machine