JIS G3444 STK400 steel pipe size:
Out diameter 6-1000mm
Wall thickness 1-70mm
Length we can also according to customer's requirement.
JIS G3444 is the standard of carbon steel tubes for general structural purposes. JIS G3444 STK400 steel tube minimum tensile strength of 400MPa, yield strength of 235MPa.
G3444 STK400 seamless pipe Certification:
ABS,BV,DNV,GL,KR,CCS,LR,NK,RS,RINA,SGS
JIS G3444 STK400 Steel Chemical Composition:
|
Symbol of class |
C |
P |
S |
|
STK400 |
0.25 max |
0.040 max |
0.040 max |
JIS G3444 STK400 Steel Mechanical Property:
|
Mechanical properties |
Tensile strength N/mm2 |
Yield point or proof stress N/mm2 |
Elongation % |
Bendability |
Flattening |
Tensile strength in welded zone N/mm2 |
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|
No.11 and No.12 test pieces |
No.5 test piece |
Bend angle |
Inside radius (D: outside diameter of tube) |
Distance between flattening plates (H) (D: outside diameter of tube) |
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|
Longitudinal direction |
Transverse direction |
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|
Method of manufacture |
Seamless, butt-welding, electric resistance welding and arc welding process |
Seamless, butt-welding, electric resistance welding process |
Seamless, butt-welding, electric resistance welding process |
Arc welding process |
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|
Outside diameter |
Full range |
Full range |
Over 40 mm |
50 mm or under |
Full range |
Over 350 mm |
||
|
STK400 |
400 min |
235 min |
23 min |
18 min |
90° 6D |
2/3D |
400 min |
|
JIS G3444 STK400seamless steel pipe Application:
STK400 seamless steel pipe tube can be used in gas and oil transportation, mechanical and manufacture, steel structure, ship building, bridging, automobile chassis.
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