JIS G3456 STPT 480 Carbon Steel Pipes for High Temperature Service Standard:JIS G3456 Carbon Steel Pipes for High Temperature Service JIS G3456 STPT 480 Carbon Steel Pipes mainly used for piping at a temperature over 350℃.   JIS G3456 STPT 480 Carbon Steel Pipes Quick Details Manufacture:Seamless process Out Dimensions: 14mm-508mm Wall Thickness: 2mm-60mm Length: Fixed(6m,9m,12,24m) or normal length(5-12m) Ends: Plain End, Beveled End, Treaded   Heat treatment ofJIS G3456 STPT 480 Carbon Steel Pipes for High Temperature Service

Grade	Hot finished seamless steel pipe	Cold finished seamless steel pipe
STPT480	As  manufactured.  However,  low temperature annealing or normalizing may be applied, as necessary.	Low  temperature  annealed  or normalized.

  Chemical Composition of JIS G3456 STPT 480 Carbon Steel Pipes for High Temperature Service

Grade	Chemical Composition %
	C	Si	Mn	p	S
STPT 480	0.33 max.	0.10~0.35	0.30~1.00	0.035 max.	0.035 max.

  Mechanical Properties of JIS G3456 STPT 480 Carbon Steel Pipes for High Temperature Service

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
STPT 480	49{481} min.	28{275} min.	25 min.	20 min.	17 min.	22 min.

  Appearance (1)The pipe are practically straight, and its both ends shall be at a right angle to its axis. (2) The inside and outside surfaces of the pipe shall be well-finished and free form defects that are detrimental to practical use.   Dimensions Tolerance of JIS G3456

Division	Tolerances on outside diameter	Tolerances on wall thickness	Tolerance on deviation in wall thickness
Hot finished seamless steel pipe	Up to 50 mm 【0.5mm	≤Up to 4 mm 【0.5mm	Up to and incl. 20 % of wall thickness
	50mm and over, up to 160mm 【1%
	160mm and over, up to 200mm 【1.6mm	≤4mm and over 【12.5%
	200mm and over 【0.8%
	However, for pipes 350mm and over in diameter, the length of circumference may substitute as a basis for tolerances, In this case, the tolerances shall be 【0.5%.
Cold finished seamless steel pipe	Up to 40mm 【0.3mm	≤Up to 2 mm 【0.2mm	–
	40mm and over 【0.8%	≤2mm and over 【10%
	However, for pipes 350mm and over in diameter, the length of circumference may substitute as a basis for tolerances. In this case, the tolerances shall be 【0.5%

  Testings (1)Chemical analysis (2)Tensile Test (3)Flattening Test (4) Bending Test (5) Hydrostatic Test or Nondestructive Examination Report We will submit to the purchaser the report on the test results, method of manufacture, ordered dimensions, quantity and work lot number traceable to the manufacturing conditions, etc.