JIS G3456 Carbon Steel Seamless & ERW Pipe for High Temperature Service

JIS G3456 Carbon Steel Seamless & ERW Pipe

JIS G3456 Carbon Steel Pipes are specially designed for situations where high working pressures and temperatures above 350℃ are required. They are used in a wide range of fields such as boilers, power, machinery, gas tanks, chemical engineering, offshore and petroleum engineering.

We offer both Electric Resistance Welded (ERW) and Seamless pipes, produced by hot-working or cold-working manufacturing processes. ERW pipes and seamless pipes have the same outer diameter range from 15.0 to 660mm. The wall thickness of ERW pipes is 2 to 20mm and the wall thickness of seamless pipes is 2 to 50mm.

The steel grades we offer are STPT370, STPT410 and STPT480. The pipes are available with plain or beveled ends and we can provide custom lengths as required.

We ensure that our pipes meet the strict standards of JIS G3456, providing reliable and long-lasting solutions for your pipe needs.

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Specification

Standard	JIS G 3456
Procedure	ERW, SMLS
Dimensions	10.5-660.4mm
Thickness	1.7mm – 52mm
Unit Length	3 – 18 mtrs
Steel Grade	STPT 370, STPT 410, STPT 480
Surface Coating	Black lacquer coating,Varnishing, Oiling, Hot Dip Galvanizing
Surface Coating	FBE, 2PP, 3PP, 2PE, 3PE
End Type	Plain, Bevelled, Threaded, Grooved，Shouldered
Joint Method	Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe Machining	Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

Dimension

Outside Diameter mm	Nominal Wall Thickness mm
	Nominal Wall Thickness mm
	SCH10	SCH20	SCH30	SCH40	SCH60	SCH80	SCH100	SCH120	SCH140	SCH160
10.5	–	–	–	1.7	–	2.4	–	–	–	–
13.8	–	–	–	2.2	–	3	–	–	–	–
17.3	–	–	–	2.3	–	3.2	–	–	–	–
21.7	–	–	–	2.8	–	3.7	–	–	–	4.7
27.2	–	–	–	2.9	–	3.9	–	–	–	5.5
34	–	–	–	3.4	–	4.5	–	–	–	6.4
42.7	–	–	–	3.6	–	4.9	–	–	–	6.4
48.6	–	–	–	3.7	–	5.1	–	–	–	7.1
60.5	–	–	–	3.9	–	5.5	–	–	–	8.7
76.3	–	–	–	5.2	–	7	–	–	–	9.5
89.1	–	–	–	5.5	–	7.6	–	–	–	11.1
101.6	–	–	–	5.7	–	8.1	–	–	–	12.7
114.3	–	–	–	6	–	8.6	–	11.1	–	13.5
139.8	–	–	–	6.6	–	9.5	–	12.7	–	15.9
165.2	–	–	–	7.1	–	11	–	14.3	–	18.2
216.3	–	6.4	7	8.2	10.3	12.7	15.1	18.2	20.6	23
267.4	–	6.4	7.8	9.3	12.7	15.1	18.2	21.4	25.4	28.6
318.5	–	6.4	8.4	10.3	14.3	17.4	21.4	25.4	28.6	33.3
355.6	6.4	7.9	9.5	11.1	15.1	19	23.8	27.8	31.8	35.7
406.4	6.4	7.9	9.5	12.7	16.7	21.4	26.2	30.9	36.5	40.5
457.2	6.4	7.9	11.1	14.3	19	23.8	29.4	34.9	39.7	45.2
508	6.4	9.5	12.7	15.1	20.6	26.2	32.5	38.1	44.4	50
558.8	–	–	–	15.9	22.2	28.6	34.9	41.3	47.6	54
609.6	–	–	–	17.5	24.6	31	38.9	46	52.4	59.5
660.4	–	–	–	18.9	26.4	34	41.6	49.1	56.6	64.2

Chemical Requirement

Designation of Grade	C	Si	Mn	P	S
STPT 370	0.25 max.	0.10 to 0.35	0.30 to 0.90	0.035 max.	0.035 max.
STPT 410	0.30 max.	0.10 to 0.35	0.30 to 1.00	0.035 max.	0.035 max.
STPT 480	0.33 max.	0.10 to 0.35	0.30 to 1.00	0.035 max.	0.035 max.