50mm Wall thickness Carbon Steel Tubes for General Structural Purposes JIS G 3444 manufacturer from China TORICH INTERNATIONAL CO.,LTD

50mm Wall thickness Carbon Steel Tubes for General Structural Purposes

Place of Origin:

Zhejiang, China (Mainland)


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Product Detail

Model No.: JIS G 3444

JIS G 3444 STK290,STK400 STK500 STK490 STK540 Carbon Steel Tubes for General Structural Purposes JIS G 3

JIS G 3444 STK290,STK400 STK500 STK490 STK540 Carbon Steel Tubes for General Structural Purposes

JIS G 3444 Carbon Steel Tures for general structural purposes
Standard :JIS G 3444
Size range:OD 5-420mm * WT 0.5-50mm *12000mm max

Application:for general structural purposes

Steel Grade:STK290,STK400 STK500 STK490 STK540 or per customer's request.
Relevant standard :KS D 3566 ASTM A500,A252, A501, BS 6323

Tube manufacture method:
1. Seamless
2. butt-welded
3. Automatic arc welded
4. electric resistance welded

Finishing method:Hot finished,cold finished,As electric resistance welded

NOTE:Heat treatment: If necessary,appropriate heat treatment may be applied to the tube.

CHEMICAL COMPOSITION % max
Steel grade	C	Si	Mn	P	S
STK290	-	-	-	0.05	0.05
STK400	0.25	-	-	0.04	0.04
STK490	0.18	0.55	1.65	0.035	0.035
STK500	0.24	0.35	0.30-1.30	0.04	0.04
STK540	0.23	0.55	1.50	0.04	0.04
Notes:1. if necessary,alloying elements other than specified in the above table may be added 2.For the tube of grade STK 540 exceeding 12.5mm in wall thickness,the chemical composition may be agreed upon by the purchaser and manufacturer.

MECHANICAL PROPERTIES min
Steel grade	Tensile strength Mpa	Yield point or proof stress Mpa	Tensile strength in weld zone Mpa	Flattening	Bendability
	Tensile strength Mpa	Yield point or proof stress Mpa	Tensile strength in weld zone Mpa	Distance between plates(H)	Bend angle	Inside radius
	Applied outside diameter
	All outside diameter	All outside diameter	All outside diameter	All outside diameter	50mm max
STK290	290	-	290	2/3D	90°	6D
STK400	400	235	400	2/3D	90°	6D
STK490	490	315	490	7/8D	90°	6D
STK500	500	355	500	7/8D	90°	6D
STK540	540	390	540	7/8D	90°	6D