JIS G3455 High Pressure Carbon Steel Pipe
JIS G3455 Carbon Steel Pipe used for high pressure service at an approximate maximum temperature of 350℃.

Description

JIS G3455 High Pressure Carbon Steel Pipes
Standard:JIS G3455
JIS G3455 Carbon Steel Pipe used for high pressure service at an approximate maximum temperature of 350℃.
Steel Grade: STS 370 ,STS 410  ,STS 480
JIS G3455 High Pressure Carbon Steel Pipes Quick Details
Type：Seamless Steel Pipe.
Material：STS 370 ,STS 410  ,STS 480
Outside Diameter：5mm-219mm
Wall thickness：0.5mm——21mm
Length：6M or specified length as required.
Ends：Plain End、Beveled End、Treaded
Additional Info
Surface：Tubes will be varnished (Outside only) to prevent rust.
Marking：Standard + Steel Grade + Size + Heat No + Lot No
Package：According To Per Customers’ Require
Delivery time：Tubes will be completed within 30 days, and urgent delivery time can be discussed.
Method of Manufacture

JIS G3455  High Pressure Carbon Steel Pipes shall be manufactured from killed steel by the seamless process

Steel pipe production process:
Hot-finished seamless steel pipe, Cold-finished seamless steel pipe

Heat treatment
Letter symbol of grade Hot-finished seamless steel pipe Cold-finished seamless steel pipe
STS 370
As manufactured. However, low temperature annealing of normalizing
may be applied, as necessary.
 Low temperature annealed of normalized
STS 410
STS 480 Low temperature annealed of normalized
Chemical Composition
Grade Chemical Composition %
C Si Mn P S
STS 370 0.25 max. 0.10~0.35 0.30~1.10 0.035 max. 0.035 max.
STS 410 0.30 max. 0.10~0.35 0.30~1.40 0.035 max. 0.035 max.
STS 480 0.33 max. 0.10~0.35 0.30~1.50 0.035 max. 0.035 max.
Mechanical Properties
Letter symbol of grade Mechanical Properties
Tensile strength Yield strength Elongation %
kgf/m㎡  {N/ m㎡} kgf/m㎡  {N/ m㎡} No.11 and No.12 test pieces No. 5 test pieces No. 4 test piece
Longitudinal Transverse Longitudinal Transverse
STS370 38 {373}min 22{216} min 30 min 25 min 23 min 28 min
STS 410 42{412}min 25{245} min 25 min 20 min 19 min 24 min
STS 480 49{481} min. 28{275} min. 25 min. 20 min. 17 min. 22 min.

Tolerances on Outside Diameter, Wall Thickness and Wall Thickness Deviation

Division Tolerances on outside diameter Tolerances on wall thickness
Tolerances on wall thickness deviation
Hot-finished seamless steel pipe
 50mm Under 【0.5mm
≤4mm Under
+0.6mm
-0.5mm
≤4mm or over
+15%
-12.5%
Within 20% of wall thickness
50mm or over 200mm to and excl.
【1.6mm
200mm of over 【0.8%
For the pipe 350mm of over, the tolerances on outside diameter may be determined by the
measurement of the length of circumference. shall be 【0.5%.
Cold-finished seamless steel pipe
 40mm Under【0.3mm
≤2mm Under
【0.2mm
 –
Test
Chemical analysis
Tensile Test
Flattening Test
Bending Test
Hydrostatic Test of Nondestructive Examination
Report
We, as a rule, submit to the purchaser the report carrying the test results, method of manufacture, ordered dimensions, quantity and work lot number traceable to the manufacturing conditions, etc.