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ERW Casing

     ERW casing is widely used as it has better performance in precise size,collapse,explosion ability and low prices than seamless

casing.Our factory adopts the first-class production line in China,which is able to manufacture N80 grade steel casing,by introducing 

the rolling mill and flying cut-off of Nakata Mfg.Co.,Ltd.(Japan),high-advanced FF-X forming technology in the world,which the 

perfect universal usage of rollers,esay to operate,low operation cost and the location therefore can be precisely digital-controlled

to ensure the stability and precision of forming and thereafter the products with excellent quality.

                             

Size of casing varifies from 5-1/2 to 13-3/8, specifications as below:

Outside Diameter

in

Nominal Weight

 lb/ft

Wall Thickness

in.

Steel Grade

Type of end-finish

5-1/2

14

0.244

J55/K55

PS

15.5

0.275

J55/K55

PSLB

17

0.304

J55/K55

PSLB

6-5/8

24

0.352

J55/K55

PSLB

7

20

0.272

J55/K55

PS

23

0.317

J55/K55

PSLB

26

0.362

J55/K55

PSLB

8-5/8

24

0.264

J55/K55

PS

28

0.304

J55/K55

PS

32

0.352

J55/K55

PSLB

36

0.4

J55/K55

PSLB

9-5/8

36

0.352

J55/K55

PSLB

40

0.395

J55/K55

PSLB

10-3/4

40.5

0.35

J55/K55

PSB

45.5

0.4

J55/K55

PSB

13-3/8

48

0.33

J55/K55

PSB

54.5

0.38

J55/K55

PSB

61

0.43

J55/K55

PSB

68

0.48

J55/K55

PSB

 P - plain end, S - short round thread, B - butress, L - long round thread.



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