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JIS G3429 Seamless Steel Tubing For Gas Cylinder

JIS G3429 Seamless Steel Tubing For Gas Cylinder

Grade: STH11, STH12, STH21, STH22
Outer Dimensions: 19.05mm ~ 114.3mm
Wall Thickness:2.0mm ~ 14 mm
Length: max 16000mm

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JIS G3429 seamless steel tubing for gas cylinder

 

JIS G3429, specification for seamless steel tube for High pressure gas vessel or container. It covers 5 grades of seamless gas pipe for high pressure purpose.

 

Grade: STH11, STH12, STH21, STH22

Outer Dimensions: 19.05mm ~ 114.3mm

Wall Thickness:2.0mm ~ 14 mm

Length: max 16000mm

Application:High pressure gas cylinder with excellent crush resistance, original tube for liquefied gas container.

 

Classification  

Symbol of

Mn steel pipe

STH 11, STH12

Cr-Mo steel tube

STH21, STH22

Ni-Cr-Mo steel tubing

STH 31


JIS G3429 tubing Chemical composition:( %)

Grade

C

Si

Mn

P

S

Ni

Cr

Mo

STH11

≤0.50

0.10-0.35

≤1.80

≤0.035

≤0.035

/

/

/

STH12

0.30-0.41

0.10-0.35

1.35-1.70

≤0.030

≤0.030

/

/

/

STH21

0.25-0.35

0.15-0.35

0.40-0.90

≤0.030

≤0.030

≤0.25

0.8-1.2

0.15-0.30

STH22

0.33-0.38

0.15-0.35

0.40-0.90

≤0.030

≤0.030

≤0.25

0.8-1.2

0.15-0.30

STH31

0.35-0.40

0.10-0.50

1.20-1.50

≤0.030

≤0.030

0.5-1.0

0.3-0.6

0.15-0.25


JIS G3429 pipe tolerances:

Outside diameter

Wall thickness

Length

Wall thickness disparity

1%

+30%

>+30mm

Within 20% of the nominal wall thickness



As a leading seamless steel pipe supplier and stockholder, SHEW-E STEEL provides JIS cylinder tubing. Our steel gas cylinder tubing is manufactured and available for a variety of cylinder manufacturing where close tolerances and smooth surface finishes are critical. Contact us today for your tubing needs>>


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