JISG3444 STK290 steel pipe/tube

JISG3444 STK290 carbon steel tubes used for structure of civil engineering and architecture,such as steel towers, footing piles,foundation piles,piles for landslide suppression and so on. In application for foundation piles,however,this standard is only applicable to welded steel tubes of outside diameter under 318.5mm,and in application for piles for landslide suppression,to seamless steel tubes and welded steel tubes of outside diameter under 318.5mm,the dimensional range covered by this standard is generally outside diameter 21.7mm to 1016.0mm.

STK290 material chemical composition:

Grade	C	Si	Mn	P	S
STK290	...	...	...	0.050 max	0.050 max

JISG3444 STK290 steel pipe mechanical properties

Grade	Tensile strength N/mm2	Yield strength of proof stress N/mm2	Tensile strength in weld zone N/mm2
STK290	290 min	...	290 min

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