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JIS

we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.

seamless pipe, carbon pipe,stainless pipe,octg pipe manufacturers

JIS

we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.

JIS G3441 pipe Suppliers,Manufacturers in china
BackYou are in :  Home  >  Pipe Standards  >  JIS
Date:2022-03-31View:439Tags:seamless pipe, carbon pipe,stainless pipe,octg pipe manufacturers

This Japanese Industrial Standard specifies the alloy steel tubes, hereinfter referred to as the"tubes", used for machinery, automobiles and other machine parts.

Application:Pipe ordered under this specification for machinery, automobiles and other machine parts.

Manufacturing Process:By a seamless process: hot finished and cold finished (with annealed)

Manufacture:seamless pipe (hot finished and cold finished)

Size: O.D.: 15.0~114mm W.T.: 2~20mm

Grade: Class1, Class2, Class3

Length: 6M or specified length as required.

Ends: Plain End, Beveled End.

Tolerance of OD and W.T

Division

Tolerance on O.D

Tolerance on W.T

Class 1

D<50m

±0.5 mm

S<4mm

+0.6mm-0.5mm

50mm≤D

±1%

S≥4mm

+1% -12.5%

Class 2

D<50m

±0.25mm

S<3mm

±0.3mm

50mm≤D

±0.5%

S≥3mm

±10%

Class 3

D<25m

±0.12mm

S<2mm

±0.15mm

40mm>D≥25mm

±0.15mm

 

 

50mm>D≥40mm

±0.18mm

S≥2mm

±8%

60mm>D≥50mm

±0.20mm

Notes: tolerance on each wall thickness shall be rounded off to one decimal place in accordance with rule a JIS Z 8401

70mm>D≥60mm

±0.23mm

80mm>D≥70mm

±0.25mm

90mm>D≥80mm

±0.30mm

100mm>D≥90mm

±0.40mm

D≥100mm

±0.50%

 

 

 

 

 

1. The OD tolerance of hot finish seamless steel pipe according to Class1 2. Quenched and tempered steel pipes according to 4 categories.

Grade and Chemical Composition ()

Designation of grade

C

Si

Mn

P

s

Ni

Cr

Mo

Cu

SMn420TK

0.17 to 0.23

0.15 to 0.35

1.20 to 1.50

0.030 max.

0.030 max.

0.25 max.

0.35 max.

/

0.30 max.

SMn433TK

0.30 to 0.36

0.15 to 0.35

1.20 to 1.50

0.030 max.

0.030 max.

0.25 max.

0.35 max.

/

0.30 max.

SMn438TK

0.35 to 0.41

0.15 to 0.35

1.35 to 1.65

0.030 max.

0.030 max.

0.25 max.

0.35 max.

/

0.30 max.

SMn443TK

0.40 to 0.46

0.15 to 0.35

1.35 to 1.65

0.030 max.

0.030 max.

0.25 max.

0.35 max.

/

0.30 max.

SMnC420TK

0.17 to 0.23

0.15 to 0.35

1.20 to 1.50

0.030 max.

0.030 max.

0.25 max.

0.35 to 0.70

/

0.30 max.

SMnC443TK

0.40 to 0.46

0.15 to 0.35

1.35 to 1.65

0.030 max.

0.030 max.

0.25 max.

0.35 to 0.70

/

0.30 max.

SCM15TK

0.13 to 0.18

0.15 to 0.35

0.60 to 0.90

0.030 max.

0.030 max.

0.25 max.

0.90 to 1.20

/

0.30 max.

SCM20TK

0.18 to 0.23

0.15 to 0.35

0.60 to 0.90

0.030 max.

0.030 max.

0.25 max.

0.90 to 1.20

/

0.30 max.

SCr430TK

0.28 to 0.33

0.15 to 0.35

0.60 to 0.90

0.030 max.

0.030 max.

0.25 max.

0.90 to 1.20

/

0.30 max.

SCr435TK

0.33 to 0.38

0.15 to 0.35

0.60 to 0.90

0.030 max.

0.030 max.

0.25 max.

0.90 to 1.20

/

0.30 max.

SCM40TK

0.38 to 0.43

0.15 to 0.35

0.60 to 0.90

0.030 max.

0.030 max.

0.25 max.

0.90 to 1.20

/

0.30 max.

SCM45TK

0.43 to 0.48

0.15 to 0.35

0.60 to 0.90

0.030 max.

0.030 max.

0.25 max.

0.90 to 1.20

/

0.30 max.

SCM415TK

0.13 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.18

0.35

0.90

max.

max.

max.

1.20

0.25

max.

SCM418TK

0.16 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.21

0.35

0.90

max.

max.

max.

1.20

0.25

max.

SCM420TK

0.18 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.23

0.35

0.90

max.

max.

max.

1.20

0.25

max.

SCM421TK

0.17 to

0.15 to

0.70 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.23

0.35

1.00

max.

max.

max.

1.20

0.25

max.

SCM425TK

0.23 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.28

0.35

0.90

max.

max.

max.

1.20

0.30

max.

SCM430TK

0.28 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.33

0.35

0.90

max.

max.

max.

1.20

0.30

max.

SCM432TK

0.27 to

0.15 to

0.30 to

0.030

0.030

0.25

1.00 to

0.15 to

0.30

 

0.37

0.35

0.60

max.

max.

max.

1.50

0.30

max.

SCM435TK

0.33 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.38

0.35

0.90

max.

max.

max.

1.20

0.30

max.

SCM440TK

0.38 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.43

0.35

0.90

max.

max.

max.

1.20

0.30

max.

SCM445TK

0.43 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.15 to

0.30

 

0.48

0.35

0.90

max.

max.

max.

1.20

0.35

max.

SCM822TK

0.20 to

0.15 to

0.60 to

0.030

0.030

0.25

0.90 to

0.35 to

0.30

 

0.25

0.35

0.90

max.

max.

max.

1.20

0.45

max.

SNC236TK

0.32 to 0.40

0.15 to 0.35

0.50 to 0.80

0.030 max.

0.030 max.

1.00 to 1.50

0.50 to 0.90

/

0.30 max.

SNC415TK

0.12 to 0.18

0.15 to 0.35

0.35 to 0.65

0.030 max.

0.030 max.

2.00 to 2.50

0.20 to 0.50

/

0.30 max.

SNC631TK

0.27 to

0.15 to

0.35 to

0.030 max.

0.030 max.

2.50 to

0.60 to

/

0.30 max.

0.35

0.35

0.65

3

1

SNC815TK

0.12 to

0.15 to

0.35 to

0.030 max.

0.030 max.

3.00 to

0.60 to

/

0.30 max.

0.18

0.35

0.65

3.5

1

SNC836TK

0.32 to

0.15 to

0.35 to

0.030 max.

0.030 max.

3.00 to

0.60 to

/

0.30 max.

0.4

0.35

0.65

3.5

1

SNCM220TK

0.17 to

0.15 to

0.60 to

0.030 max.

0.030 max.

0.40 to

0.40 to

0.15 to

0.30 max.

0.23

0.35

0.9

0.7

0.6

0.25

SNCM240TK

0.38 to

0.15 to

0.70 to

0.030 max.

0.030 max.

0.40 to

0.40 to

0.15 to

0.30 max.

0.43

0.35

1

0.7

0.6

0.3

SNCM415TK

0.12 to

0.15 to

0.40 to

0.030 max.

0.030 max.

1.60 to

0.40 to

0.15 to

0.30 max.

0.18

0.35

0.7

2

0.6

0.3

SNCM420TK

0.17 to

0.15 to

0.40 to

0.030 max.

0.030 max.

1.60 to

0.40 to

0.15 to

0.30 max.

0.23

0.35

0.7

2

0.6

0.3

SNCM431TK

0.27 to

0.15 to

0.60 to

0.030 max.

0.030 max.

1.60 to

0.60 to

0.15 to

0.30 max.

0.35

0.35

0.9

2

1

0.3

SNCM439TK

0.36 to

0.15 to

0.60 to

0.030 max.

0.030 max.

1.60 to

0.60 to

0.15 to

0.30 max.

0.43

0.35

0.9

2

1

0.3

SNCM447TK

0.44 to

0.15 to

0.60 to

0.030 max.

0.030 max.

1.60 to

0.60 to

0.15 to

0.30 max.

0.5

0.35

0.9

2

1

0.3

SNCM616TK

0.13 to

0.15 to

0.80 to

0.030 max.

0.030 max.

2.80 to

1.40 to

0.40 to

0.30 max.

0.2

0.35

1.2

3.2

1.8

0.6

SNCM625TK

0.20 to

0.15 to

0.35 to

0.030 max.

0.030 max.

3.00 to

1.00 to

0.15 to

0.30 max.

0.3

0.35

0.6

3.5

1.5

0.3

SNCM630TK

0.25 to

0.15 to

0.35 to

0.030 max.

0.030 max.

2.50 to

2.50 to

0.50 to

0.30 max.

0.35

0.35

0.6

3.5

3.5

0.70 b)

SNCM815TK

0.12 to

0.15 to

0.30 to

0.030 max.

0.030 max.

4.00 to

0.70 to

0.15 to

0.30 max.

0.18

0.35

0.6

4.5

1

0.3

SACM645TK

0.40 to

0.15 to

0.60 max.

0.030 inax.

0.030 max.

0.25 max.

1.30 to

0.15 to

0.30 max.

0.5

0.5

1.7

0.3

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