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JIS G3441

Date:2022-03-31View:709Tags: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
Class 1	50mm≤D	±1%	S≥4mm	+1% -12.5%
Class 2	D＜50m	±0.25mm	S＜3mm	±0.3mm
Class 2	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.
SNC631TK	0.35	0.35	0.65	0.030 max.	0.030 max.	3	1	/	0.30 max.
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.
SNC815TK	0.18	0.35	0.65	0.030 max.	0.030 max.	3.5	1	/	0.30 max.
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.
SNC836TK	0.4	0.35	0.65	0.030 max.	0.030 max.	3.5	1	/	0.30 max.
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.
SNCM220TK	0.23	0.35	0.9	0.030 max.	0.030 max.	0.7	0.6	0.25	0.30 max.
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.
SNCM240TK	0.43	0.35	1	0.030 max.	0.030 max.	0.7	0.6	0.3	0.30 max.
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.
SNCM415TK	0.18	0.35	0.7	0.030 max.	0.030 max.	2	0.6	0.3	0.30 max.
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.
SNCM420TK	0.23	0.35	0.7	0.030 max.	0.030 max.	2	0.6	0.3	0.30 max.
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.
SNCM431TK	0.35	0.35	0.9	0.030 max.	0.030 max.	2	1	0.3	0.30 max.
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.
SNCM439TK	0.43	0.35	0.9	0.030 max.	0.030 max.	2	1	0.3	0.30 max.
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.
SNCM447TK	0.5	0.35	0.9	0.030 max.	0.030 max.	2	1	0.3	0.30 max.
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.
SNCM616TK	0.2	0.35	1.2	0.030 max.	0.030 max.	3.2	1.8	0.6	0.30 max.
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.
SNCM625TK	0.3	0.35	0.6	0.030 max.	0.030 max.	3.5	1.5	0.3	0.30 max.
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.
SNCM630TK	0.35	0.35	0.6	0.030 max.	0.030 max.	3.5	3.5	0.70 b)	0.30 max.
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.
SNCM815TK	0.18	0.35	0.6	0.030 max.	0.030 max.	4.5	1	0.3	0.30 max.
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.
SACM645TK	0.5	0.5	0.60 max.	0.030 inax.	0.030 max.	0.25 max.	1.7	0.3	0.30 max.

【Prev】 : JIS G3444
【Next】 : NACE MR 0175

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JIS G3441