we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
JIS G3461 used for exchanger heat on inside and outside of the tube, such as water tubes, smoke tubes, superheater tubes, air preheater tubes, etc. of the boiler, and heat exchanger tubes, condenser tubes, catalyser tubes, etc. used in chemical and petroleum industries. However, it is no applicable to the steel tubes for heating furnace and steel heat exchanger tubes for low temperature service
Specification：
OD: 15.9mm ~ 139.8mm
WT: 1.24mm-59.54mm, SCH5~SCH160,XXS
Length: 5-12m or as customer required
Application: Hydraulic system pipeline pipe,Gas and Fluid Transportation, Mechanical Pipeline, power plant, etc.
Supplementary Technology: Plain or threaded with socket, beveled with plastic caps, hydraulic testing, eddy current, Infrared test.
Surface: Bare,black painted,varnished,oiled, 2PE, 3PE
Delivery state: Hot Rolled, Cold Drawn
Steel Grade: STB 340, STB 410, STB 510
Chemical Composition
|
JIS G3461 |
Traditional symbol |
C |
Si |
Mn |
P |
S |
|
STB 340 |
STB 35 |
0.18 max |
0.35 max |
0.30 to 0.60 |
0.035 max |
0.035 max |
|
STB 410 |
STB 42 |
0.32 max |
0.35 max |
0.30 to 0.80 |
0.035 max |
0.035 max |
|
STB 510 |
STB 52 |
0.25 max |
0.35 max |
1.00 to 1.50 |
0.035 max |
0.035 max |
Mechanical Property
|
JIS G3461 |
Tensile strength N/mm2 |
Yield point or proof stress N/mm2 |
Elongation % |
Hardness |
||
|
Outside diameter under 10 mm |
Outer diameter 10 mm or over to and excl. 20 mm |
Outer diameter 20mm or over |
||||
|
No. 11 test piece |
No. 11 test piece |
No. 11 test piece No. 12 test piece |
||||
|
STB 340 |
340 min |
175 min |
27 min |
30 min |
35 min |
77max |
|
STB 410 |
410 min |
255 min |
17 min |
20 min |
25 min |
79max |
|
STB 510 |
510 min |
295 min |
17 min |
20 min |
25 min |
92max |
Equivalent steel grade
|
JIS G3461 |
ASTM |
ASME |
BS |
DIN |
ISO |
ABS |
NK |
LRS |
DNV |
|
STB 340 |
A178 |
SA178 A |
3059-P1 320 |
17175 st 35.8 |
|
ABS D |
KSTB 33 |
Sec 6 320 |
Sec 4-E-TS360 |
|
STB 410 |
A178 C |
SA178 C |
3059-P2 440 |
17175 st 45.8 |
|
ABS F |
KSTB 42 |
Sec 6 410 |
Sec 4-E-TS410-1 |
|
STB 510 |
|
|
|
17175 19Mn 5 |
|
|
|
|
Sec 4-E-TS510 |
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