JIS G3461 STB340 Carbon Steel Seamless Tubes
- JIS G3461
- China
- Stock
- STB340
JIS G3461 STB 340 specifies the carbon steel tubes, used for exchanging heat on the 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, conde
JIS G3461 STB340 Carbon Steel Seamless Tubes
JIS G3461 STB340 Carbon Steel Tubes
JIS G3461 STB340 Carbon Steel Tubes for Boiler and Heat Exchanger
Standard: JIS G3461
Carbon Steel Tubes for Boiler and Heat Exchanger
JIS G3461 STB 340 specifies the carbon steel tubes, used for exchanging heat on the 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, catalyzer tubes, etc. used in chemical and petroleum industries.
JIS G3461 STB340 Carbon Steel Tubes Quick Details
Company Name: Beite steel pipe
Country/Region: China
Product Name：JIS G3461 STB340 Carbon Steel Tubes
FOB Price: US $900-1400 / Ton | 1 Ton/Tons (Min. Order)
Port of Shipment：Tianjin,China
Payment：L/C or T/T
Delivery: 7-15 days after payment
Package：Standard export package,suit for all kinds of transport, or as required
Certificate：ISO 9001-2000,PED 97/23/EC,ASME,DNV
JIS G3461 STB340 Carbon Steel Tubes Dimensional Range & Specification
Outside Diameter：15.9mm——127mm
Wall thickness：3.4mm——12.7mm
Length：6000mm、12000m or specified length as required.
STB340 is a steel grade of JIS G3461 Standard Specification,This Japanese Industrial Standard specifies the carbon steel tubes
JIS G3461 STB340 Carbon Steel Tubes used for exchanging heat on the inside and outside of the tube, such aswater tubes, smoke tubes, superheater tubes, air preheater tubes, etc. of the boiler, and heat exchanger tubes, condenser tubes, catalyzer tubes, etc. used in chemical and petroleum industries.
However,JIS G3461 STB340 Carbon Steel Tubes are not applicable to the steel tubes for heating furnace and steel heat exchanger tubes for low temperature service.
Heat Treatment
Note:The cold finished electric resistance welded steel tube which has been normalized prior to cold finishing may be finished by annealing.
Chemical Composition
Note:Where required by the purchaser, Si may be designated as 0.10 to 0.35%.
Mechanical Properties
Heat Treatment
| Grade | Heat treatment | ||||
| Hot finished seamless steel tube |
Cold finished seamless steel tube
|
Electric resistance welded steel tube other than hot finished or cold finished steel tube
|
Finished electric resistance welded steel tube
|
Fold finished electric resistance welded steel tube
|
|
| STB 340 |
As manufactured, as required, low temperature annealing or normalizing may be performed.
|
Low temperature
annealing,normalizing or full annealing.
|
Normalizing |
As manufactured. However, as required, low temperature annealing or normalizing may be performed
|
Normalizing |
Chemical Composition
| Standard | Grade | Chemical Composition Limits (%) | ||||
| C | Si | Mn | P | S | ||
| JIS G3461 | STB340 | ≤ 0.18 | ≤ 0.3 | 0.30-0.60 | ≤ 0.035 | ≤ 0.035 |
Mechanical Properties
| Grade | Tensile Property (N/mm2) | Yield Point or Yield Strength (N/mm2) | Elongation (%) | ||
| OD ≥20 mm | 10 mm ≤OD ＜20 mm | OD ＜10 mm | |||
| NO. 11 Sample; NO. 12 Sample | NO. 11 Sample | NO. 11 Sample | |||
| Longitudinal | Transverse | Transverse | |||
| STB340 | ≥ 340 | ≥ 175 | ≥ 35 | ≥ 30 | ≥ 27 |
Appearance of JIS G3461 STB340 Carbon Steel Tubes
(1) The tube shall be practically straight and its both ends shall be at right angles to its axis.
(2) The inside and outside surfaces of the tube shall be well-finished and free from defects injurious to use. However, in the case of electric resistance welded tube the swelling of inside surface of the weld shall be 0.25mm or less. In this case, if necessary, the purchaser may specify the inside swelling as 0.5mm or less for the tubes 50.8mm or under in outside diameter and at the same time 3.5mm or under in wall thickness.
Testing:
Chemical Analysis , Tensile Test , Flattening Test , Flaring Test , Reverse flattening Test ,Hydrostatic Test or Nondestructive Examination.
W=0.02466 t (D-t)
Where
W: unit mass of tube (Kg/m)
t: wall thickness of tube (mm)
D: outside diameter of tube (mm)
JIS G3461 STB340 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 |
We can customize and innovate the JIS G3461 STB340 Carbon Steel Tubes with advanced technology. Our all JIS G3461 STB340 Carbon Steel Tubes are tested in accordance to internationally recognized standards or our own more stringent internal test procedures, which is developed considering the harsh field conditions. Tension test, flattening test, flaring test, hardness test, hydrostatic or nondestructive electric test be made on specimens.
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