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SPECIAL IN JOTAIN

Jotain is expert in exporting steel products.we not only have the great advantages in our product quality/price/resource/service,but also have absolute advantages in our technical aspects.

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Prestressed Reinforcement

Jotain's prestressing system consists of the high performances of thread bars, anchoring accessories, and HDPE accessories, which enable clients to accomplish procurement in one-stop for all related projects. 


Prestressing Thread Bars Mechanical Properties(min. value)

Grade

Yield Strength

Tensile Strength

E-Modulus

Elongation at Failure

N/mm²

N/mm²

N/mm²

%

830/1030

830

1,030

205,000

6

930/1080

930

1,080

205,000

6

1080/1230

1080

1,230

205,000

6



Technical Data 

Nominal 

Diameter

Cross-section

Area

Linear

Weight

Grade 830/1030

Grade930/1080Grade 1080/1230

Yield

Load

Ultimate

Load

Yield

Load

Ultimate

Load

Yield

Load

Ultimate

Load

mm

mm²

kg/m

kN

kN

kN

kN

kN

kN

25

491

4.1

408

506

457

531

531

604

32

804

6.65

668

829

748

869

869

990

36

1018

8.41

845

1049

947

1100

1100

1253

40

1257

10.34

1043

1295

1169

1358

1358

1546

50

1964

16.28

1630

2023

1827

2121

2121

2416

63.5

3167

24.88

2629

3262

2945

3420

3420

3895



Dimensions & Tolerance

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Nom.

Dia. 
/mm

Diameter of Base Circle /mm

Height of 

Screw-thread/mm

Screw Pitch /mm

Thread 

Length 

/mm

dh

dvhl

Nom.

Dim.

Permissible

Dev.

Nom. 

Dim.

Permissible

Dev.

Nom. 

Dim.

Permissible 

Dev.

Nom. 

Dim.

Permissible

Dev.

25

25.0 

±0.4

25.0 

+0.4
-0.8

1.6 

±0.3

12.0 

±0.3

-10
+30

32

32.0 

±05

32.0 

+0.4
-1.2

2.0 

±0.4

16.0 

36

36.0 

±0.6

36.0 

+0.4
-1.2

2.2 

±0.4

18.0 

±0.4

40

40.0 

40.0

+0.5

-1.2

2.5

±0.5
20.0

50

50.0 

50.0

+0.5

-1.2 

3.0

+0.5

-1.0

24.0

63.5

63.5 

63.5

+0.5

-1.2 

3.0

+0.5

-1.0

22.0



Nut and Plate Dimensions

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Nom. Dia.

Plate Square

Full Force Hex Nut

A

E

Weight

mm

mm

Steel Grade

mm

mm

kg/Pc

15

100*100*20

PSB785-PSB1080

45

29

-

18

100*100*20

PSB785-PSB1080

45

30

-

20

100*100*20

PSB785-PSB1080

45

32

-

25

120*120*20

PSB785-PSB1080

54

50

2.1/0.65

32

140*140*24

PSB785-PSB1080

72

65

3.5/1.45

36

150*150*30

PSB785-PSB1080

80

65

4.8/1.65

40

160*160*30

PSB785-PSB1080

100

70

5.25/2.09

50

180*180*40

PSB785-PSB1080

110

80

-



Coupler Dimensions

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Nom. Dia.

Steel Grade

B

D

E

Weight

d.

mm

mm

mm

mm

kg/Pc

25

PSB785-PSB1080

50±0.5

126±0.6

25.4±0.3

1.95

32

PSB785-PSB1080

60±0.5

168±0.6

32.5±0.3

3.80 

36

PSB785-PSB1080

70±0.5

180±0.6

36.6±0.3

5.44

40

PSB785-PSB1080

74±0.5

220±0.6

41.0±0.3

7.35


Plastic Accessories 

  HDPE Corrugate Pipe

 

Round Corrugated Pipe

Item

Inner Diamete

d,mm

Outer Diameter

D,mm

Thickness

s,mm

Out of

Roundness

Matching

Anchorage

NominalDeviationNominalDeviationNominalDeviation
SBG-50Y50±1.063±1.02.5±0.56%YM12-7YM15-5
SBG-60Y60732.5YM12-12YM15-7
SBG-75Y75882.5YM12-19YM15-12
SBG-90Y90±2.0106±2.03.0 YM12-22YM15-17
SBG-100Y1001163.0YM12-31YM15-22
SBG-115Y1151313.0YM12-37YM15-27
SBG-130Y1301463.0YM12-42YM15-31


Flat HDPE Corrugated Pipe 

ItemLong Axis/U1Short Axis/U2Thickness/s
NominalDeviationNominalDeviationNominalDeviation
SBG-41B41±1.022±0.52.5±0.5
SBG-55B55222.5
SBG-72B72223.0
SBG-90B90223.0