JIS G 3441 Class 2 Alloy Seamless Steel Tubes

Short Description:

Size: O.D.: 15.0～114mm W.T.: 2～20mm

Grade: SCM420TK,SCM 415TK, SCM430TK,

Length: 6M or specified length as required.

Ends: Plain End, Beveled End.

Payment: 30% Deposit, 70% L/C Or B/L Copy Or 100% L/C At Sight

Min.Order Quantity: 1 Tons

Lead Time: 7-14 Days If In Stock, 30-45 Days To Produce

Technology: Hot Rolled, Cold Drawn,Extruded,Cold Finished, Heat Treated

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Chemical Composition and mechanical properties JIS G3441 Alloy Seamless Steel tubes

Grade and Chemical Composition (％)

Grade

C≤

P≤

S≤

SCM 420TK

0.18~

0.23

0.15~

0.35

0.60~

0.85

0.030

0.90~

1.20

SCM 415TK

0.13~

0.18

0.15~

0.35

0.60~

0.85

0.030

0.90~

1.20

0.15~

0.30

SCM 418TK

0.16~

0.21

0.15~

0.35

0.60~

0.85

0.030

0.90~

1.20

0.15~

0.30

SCM 420TK

0.18~

0.23

0.15~

0.35

0.60~

0.85

0.030

0.90~

1.20

0.15~

0.30

SCM 430TK

0.28~

0.33

0.15~

0.35

0.60~

0.85

0.030

0.90~

1.20

0.15~

0.30

SCM 435TK

0.33~

0.38

0.15~

0.35

0.60~

0.85

0.030

0.90~

1.20

0.15~

0.30

SCM 440TK

0.38~

0.43

0.15~

0.35

0.60~

0.85

0.030

0.90~

1.20

0.15~

0.30

Note: 1. Ni as an impurity in various steel pipes does not exceed 0.25%, and Cu does not exceed 0.30%; 2. When the purchaser requests the analysis of the finished product, the allowable deviation is as specified in Table 3 of JIS G0321.

Manufacturing Process of JIS G 3441 Alloy Seamless Steel Tubes

Details of JIS G 3441 Alloy Seamless Steel Tubes We can supply

Manufacture:seamless pipe (hot finished and cold finished)

Size: O.D.: 15.0～114mm W.T.: 2～20mm

Grade: SCM 415TK,SCM 420 TK.

Length: 6M or specified length as required.

Ends: Plain End, Beveled End.

Grade
Manufacture method code(hot finished seamless steel pipe: S-H; Cold finished seamless steel pipe: S-C)
Dimensions(nominal diameter X nominal wall thickness or outside diameter X wall thickness)
Manufacturer's name or its identifying brand

Tolerance of outside diameter and wall thickness

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	±0.12 mm	S＜2mm	±0.15mm
	40mm＞D≥25mm	±0.15 mm
	50mm＞D≥40mm	±0.18 mm	S≥2mm	±8%
	60mm＞D≥50mm	±0.20 mm	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	±0.25 mm
	90mm＞D≥80mm	±0.30mm
	100mm＞D≥90mm	±0.40 mm
	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.