boiler pipe-boiler seamless steel pipe

Boiler Pipe

Product:	Seamless Boiler Pipe, Seamless Boiler Tube
Application:	Used for superheated pipelines, steam pipeline, boiling water tube
Size:	OD: 25-127mm
	WT: 2-12mm
	LENGTH: 5.8/6/11.8/12m
Pipe Standard:	ASTM A192 ASTM A179 ASTM A209 ASTM A210
	JIS G3461 JIS G3462 JIS3463 DIN17175 EN 10216-2
	A213 T5，T9，T11，T22，T91

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Specification

Boiler Pipe Specifications

Type	Boiler Pipe, Boiler Steel Pipe, Seamless Boiler Tubes, Carbon Steel Boiler Tube, Boiler Heat Pipe, Stainless Steel Boiler Pipe, Boiler Seamless Steel Pipe, High Pressure Boiler Tube
Standard	ASTM A 210 – A&C；ASTM A 213 - T-5, T-9, T-11, T-22, T-91
Material	20#, 10#, 20G, 25MnG, 15MoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG
Process	Hot rolled and hot expanded
Application	Our boiler steel pipe are widely used to manufacture containers, heating pipelines and steaming pipelines of medium or low pressure boilers (P < 5.88Mpa, T < 450°C) and coal-saving devices, superheaters and reheaters of high pressure boilers (P > 9.8Mpa, 450°C < T < 650°C).
Dimensions
Specification	114-630MM*4 - 50MM
Diameter	114MM - 630MM
Thickness	4MM - 50MM
Length	According to Clients Requirements

Standard Boiler Tube Sizes Table

Size	Schedule	Wall	ID
1/8" .405" OD	10S	.49	.307
	40ST, 40S	.68	.269
	80SX, 80S	.095	.215
1/4" .540" OD	10S	.065	.410
	40ST, 40S	.088	.364
	80SX, 80S	.119	.302
3/8" .675"	10S	.065	.545
	40ST, 40S	.091	.493
	80SX, 80S	.126	.423
1/2" .840"	5S	.065	.710
	10S	.0835	.674
	40ST, 40S	.109	.622
	80SX, 80S	.147	.546
	160	.188	.464
	XX	.294	.252
3/4" 1.050 OD"	5S	.065"	920"
	10S	.083"	.884"
	40ST, 40S	.113"	.824"
	80SX, 80S	.154"	.742"
	160	.219"	.612"
	XX	.308"	.434"

Length Of Cold Drawn Boiler Steel Tube

Boiler Tube	Length [m]	for sizes [mm]
Boiler Tube	5 - 6	OD < 60.3
Boiler Tube	5 - 6 or 10 - 14	OD => 60.3 and WT < 7.1
Boiler Tube	5 - 6	OD => 60.3 and WT => 7.1

For more knowledge about boiler tubes, learn more.

Process

The manufacturing method of medium and high pressure boiler steel pipe is same with the seamless steel pipe, but there are some key manufacturing processes shall be noted:

Fine drawing

Surface bright

Hot rolling

Cold drawn

Heat expansion

Tests

Test Requirements of Cold Drawn Boiler Tube

Eddy Current Test
Ultrasonic Testing
Hydrostatic Tests
Metalography Test
MP / DP / RF ECT Testing
BHN Hardness & Rockwell Testers
Visual Inspection, TPP and CVN Impact Testing

Packing & Delivery

Boiler Pipe Packing

Tolerance table

Boiler Pipe Specifications Tolerance

Standard	Out Diameter	Tolerance
GB3087	≤180	±1.0%(min: ±0.5mm)
GB5310	≤50	±0.5mm
GB5310	>50	±1.0%

Standard	Wall Thickness(mm)	Tolerance
GB3087	3-20	+15%,12.5%
GB3087	>20	±12.5%
GB5310	<3.5	+15%,-10%
	3.5-20	+15%,-10%
	>20	±10%

Chemical composition

Boiler Pipe Chemical composition and olerance

Standard	Grade	Chemical composition(%)					Mechanical properties
Standard	Grade	C	Si	Mn	P	S	Tensile Strength(Mpa)	Yield Strength(Mpa)	Elongation(%)
DIN17175	St35.8	≤0.17	0.10-0.35	0.40-0.80	≤0.030	≤0.030	360-480	≥235	≥25
DIN17175	St45.8	≤0.21	0.10-0.35	0.40-1.20	≤0.030	≤0.030	410-530	≥255	≥21