JIS G3454,G3455,G3456 Carbon steel pipes

JIS G3454,G3455,G3456 Carbon steel pipes for pressure, high pressure and high temperature service


JIS G3454

JIS G3454 DN80 SCH60
Carbon steel pipes for pressure service, high pressure service and high temperature service.

Standard:

JIS G3455 STS370
Size (mm):

Application: Carbon steel pipes for pressure service, high pressure service and high temperature service.


JIS G3456 carbon steel pipes
The main products of steel / steel grade:

Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers' requirements .
Painting: as requested.

Chemical Compositions(%):
Standard Grade C Si Mn P S
JIS G3454 STPG370 ≤0.25 ≤0.35 0.30-0.90 ≤0.040 ≤0.040
STPG410 ≤0.30 ≤0.35 0.30-1.00 ≤0.040 ≤0.040
JIS G3455 STS370 ≤0.25 0.10-0.35 0.30-1.10 ≤0.035 ≤0.035
STS410 ≤0.30 0.10-0.35 0.30-1.40 ≤0.035 ≤0.035
STS480 ≤0.33 0.10-0.35 0.30-1.50 ≤0.035 ≤0.035
JIS G3456 STPT370 ≤0.25 0.10-0.35 0.30-0.90 ≤0.035 ≤0.035
STPT410 ≤0.30 0.10-0.35 0.30-1.00 ≤0.035 ≤0.035
STPT480 ≤0.33 0.10-0.35 0.30-1.00 ≤0.035 ≤0.035
Mechanical Properties:
Standard Grade Yield Strength (Mpa) Tensile Strength (Mpa) Elongation (%)
JIS G3454 STPG370 ≥216 ≥370 ≥30
STPG410 ≥245 ≥410 ≥25
JIS G3455 STS370 ≥216 ≥370 ≥30
STS410 ≥245 ≥410 ≥25
STS480 ≥275 ≥480 ≥25
JIS G3456 STPT370 ≥216 ≥370 ≥30
STPT410 ≥245 ≥410 ≥25
STPT480 ≥275 ≥480 ≥25

The tubes shall be manufactured by seamless process, electric resistance welding process, or butt welding process, and those of other grades shall be manufactured by seamless process or electric resistance welding process. The tube shall be as manufactured or as cold-finished condition, or they shall be subjected to appropriate heat treatment.

The tubes shall be practically straight. and the two ends shall be at right angles to the axis of the tube. The tubes shall be free from defects detrimental to practical use.



Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.


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