Seamless Boiler Tube

General boiler tubes are mainly used to manufacture water wall tubes, boiling water tubes, superheated steam tubes, superheated steam tubes for locomotive boilers, large and small smoke tubes and arch brick tubes, etc. High-pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, gas guide tubes, main steam tubes, etc. of high-pressure and ultra-high pressure boilers.

Classification ：

Carbon steel pipe

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PRODUCT DETAILS

Boiler seamless steel pipe is a kind of seamless pipe. The manufacturing method is the same as that of the seamless pipe, but there are strict requirements on the steel type used in the manufacture of the steel pipe. Boiler seamless steel tubes are divided into general boiler tubes and high-pressure boiler tubes according to their high temperature performance. General boiler tubes or high-pressure boiler tubes can be divided into various steel tubes according to their different requirements.

SPECIFICATION OF BOILER TUBE

SPECIFICATION OF BOILER TUBES
OD*WT	OD*WT	OD*WT	OD*WT	OD*WT	OD*WT	OD*WT	OD*WT
14*3	38*5,5	89*5	133*18	34*5	76*6	133*7	219*7
14*3,5	42*3	89*5,5	159*6	34*6,5	76*7	133*8	219*8
14*4	42*3,5	89*6	159*6,5	38*3	76*8	133*10	219*9
16*3	42*4	89*7	159*7	38*3,5	76*9	133*12	219*10
18*2	42*5	89*7,5	159*8	38*4	76*10	133*13	219*12
18*3	42*6	89*8	159*9,5	38*4,5	89*4	133*14	219*13
18*4	42*8	89*9	159*10	38*5	89*4,5	133*16	219*14
18*5	45*3	89*10	159*12	219*16	273*36	356*28	426*12
19*2	45*4	89*11	159*14	219*18	273*40	356*36	426*13
21*4	45*5	89*12	159*16	219*20	273*42	377*9	426*14
22*2,5	45*6	108*4,5	159*18	219*22	273*45	377*10	426*17
22*3	45*7	108*5	159*20	219*24	298,5*36	377*12	426*20
22*4	48*4	108*6	159*28	219*25	325*8	377*14	426*22
22*5	48*4,5	108*7	168*6	219*26	325*9	377*15	426*30
25*2,5	48*5	108*8	168*7	219*28	325*10	377*16	426*36
25*3	48*6	108*9	168*8	219*30	325*11	377*18	426*40
25*4	48*7	108*10	168*9,5	219*32	325*12	377*20	426*50
25*5	48,3*12,5	108*12	168*10	219*35	325*13	377*22	457*9,5
25*5,5	51*3	108*14	168*11	219*38	325*14	377*25	457*14
27*3,5	51*3,5	108*15	168*12	273*7	325*15	377*32	457*16
27*4	51*4	108*16	168*14	273*8	325*16	377*36	457*19
27*5	51*5	108*20	168*15	273*9	325*17	377*40	457*24
27*5,5	51*6	114*5	168*16	273*9,5	325*18	377*45	457*65
28*2,5	57*4	114*6	168*18	273*10	325*20	377*50	508*13
28*3	57*5	114*7	168*20	273*11	325*22	406*9,5	508*16
28*3,5	57*5,5	114*8	168*22	273*12	325*23	406*11	508*20
28*4	57*6	114*8,5	168*25	273*13	325*25	406*13	508*22
30*2,5	60*4	114*9	168*28	273*15	325*28	406*17	558,8*14
32*2,5	60*4	114*10	180*10	273*16	325*30	406*22	530*13
32*3	60*5	114*11	194*10	273*18	325*32	406*32	530*20
32*3,5	60*6	114*12	194*12	273*20	325*36	406*36	570*12,5
32*4	60*7	114*13	194*14	273*22	325*40	406*40	610*13
32*4,5	60*8	114*14	194*16	273*25	325*45	406*55	610*18
32*5	60*9	114*16	194*18	273*28	356*9,5	406,4*50	610*78
34*3	60*10	114*18	194*20	273*30	356*12	406,4*55	624*14,2
34*4	76*4,5	133*5	194*26	273*32	356*15	406*60	824*16,5
34*4,5	76*5	133*6	219*6,5	273*35	356*19

Technical data

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 & Mechanical Properties

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

Factory Appearance

Since its establishment, our company has been adhering to the purpose of "quality and progress, honesty and trust", relying on increasingly sophisticated technology and strong production capacity, has developed into a modern steel plate manufacturing and production enterprises.

Packing and shipping

Our products include steel plate (stainless steel plate, galvanized plate, carbon plate, etc.), steel strip (stainless steel strip, galvanized steel strip, etc.), steel coil (stainless steel coil, galvanized steel coil, etc.), steel pipe (stainless steel pipe, seamless pipe, oil casing, etc.), color coated coil, corrugated plate and various pipe fittings and profiles.