JIS G3454/3455/3456 Carbon steel tubes for pressure/High pressure/Temperature applications

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JIS G3454/3455/3456 Carbon steel tubes for pressure/High pressure/Temperature applications

Pipes according to JIS G 3454/3455/3456 are seamless carbon steel pipes suitable for welding and threading, and can be formed by bending, crimping and similar processes, and are also suitable for welding. Pipe material grades (chemical composition) are STPG370, STPG410 of JIS G 3454; STS370, STS410, STS480 of JIS G 3455 and STPT370, STPT410, STPT480 of JIS G 3456 and are manufactured by either hot forming or cold drawing process.

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JIS G3454/3455/3456 Carbon steel tubes for pressure/High pressure/Temperature applications

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Description

Product Description

Product Size

Outer diameter: 10.5～660.4mm
Wall thickness: 2.40～64.2mm
End: Flat end, beveled or threaded for selection
Length: 3 to 12 meters or SRL, DRL, double-footed and fixed-footed

Product Packaging

External surfaces varnished clear/black, hot-dipped galvanized or anticorrosive treatment (FBE, 3LP, 3LPP) optional, steel strapping.

Chemical composition

		C	Mn	P	S	Si	Cr	Cu	Mo	Ni	Nb
Standard code	Steel code	≤，%
JIS G 3454	STPG370	0.25	0.30～0.90	0.040	0.040	0.35
JIS G 3454	STPG410	0.30	0.30～1.00	0.040	0.040	0.35
JIS G 3455	STS370	0.25	0.30～1.10	0.035	0.035	0.10～0.35
	STS410	0.30	0.30～1.40	0.035	0.035	0.10～0.35
	STS480	0.33	0.30～1.50	0.035	0.035	0.10～0.35
JIS G 3456	STPT370	0.25	0.30～0.90	0.035	0.035	0.10～0.35
	STPT410	0.30	0.30～1.00	0.035	0.035	0.10～0.35
	STPT480	0.33	0.30～1.00	0.035	0.035	0.10～0.35

Product Mechanical Properties

		Tensile strength ≥, MPa	Yield strength ≥, MPa	Elongation after break ≥, %
JIS G 3454	STPG370	370	215	See product standards for details
JIS G 3454	STPG410	410	245
JIS G 3455	STS370	370	215
	STS410	410	245
	STS480	480	275
JIS G 3456	STPT370	370	215
	STPT410	410	245
	STPT480	480	275

Application
Typically used in the construction of petroleum and petrochemical refineries, power plants, boilers and ships that transport fluids and gases with high temperatures and pressures.

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