Boiler Steel Pipe
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Introduction
- Product Type:Seamless boiler pipe, Boiler Seamless Tube, Seamless Boiler Tube, Boiler Pipe
Application: Used for superheated pipelines, steam pipeline, boiling water tube
SPECIFICATION:
Outer Diameter (OD): 13.72-914.4mm
Wall Thickness(WT): 1.65-22mm
LENGTH: 0.5mtr-20mtr
Pipe Standard:ASTM A192 ASTM A179 ASTM A556 ASTM A210 ;EN10216/BS3059;JIS G3454/G3456/G3461 ;A213 T5，T9，T11，T22，T91
Boiler steel pipes refers to steel that is open at both ends and has a hollow section. Boiler and heat exchange tubes must be temperature and pressure resistant. For specific applications, they even need to increase or reduce heat transmission.
Boiler steel pipes includes medium pressure boiler pipe and high pressure boiler pipe, it is often manufactured in seamless procedures, welded steel pipe is not applicable.
It has been widely used at heat exchanger pipe and tubing services, tube exchanger bundle, high pressure boiler, economizer, super heater, petrochemical industry pipes, etc.
Types of boiler tubes
Fire Tube Boiler
Fire-tube boiler is a type of boiler in which hot gas passes from the fire through one or more pipes that pass through a sealed water container. The heat of the gas is transferred through the wall of the tube through heat conduction, heating the water and eventually generating steam. Fire tube boilers are the third of the four historical types of boilers: low-pressure tank or “haystack” boilers, flue boilers with one or two large flues, fire tube boilers and high-pressure boilers with many small tubes
Water Tube Boiler
Water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. The fuel is burned in the furnace to produce hot gas, which heats the water in the steam generation tube. In smaller boilers, the additional power generation tubes are separated in the furnace, while larger utility boilers rely on water injection tubes that make up the furnace wall to generate steam. High-pressure water tube boiler: The hot water then rises into the steam drum. Here, saturated steam is drawn away from the top of the drum.
Specification
Specification
Size Wall Thickness(mm) O.D.(mm) 2 2.5 3 3.5 4 4.5 5 6 6.5-7 7.5-8 8.5-9 9.5-10 11 12 Φ25-Φ28 ● ● ● ● ● ● Φ32 ● ● ● ● ● ● Φ34-Φ36 ● ● ● ● ● ● Φ38 ● ● ● ● ● ● Φ40 ● ● ● ● ● Φ42 ● ● ● ● ● Φ45 ● ● ● ● ● ● Φ48-Φ60 ● ● ● ● ● ● ● Φ63.5 ● ● ● ● ● ● ● Φ68-Φ73 ● ● ● ● ● ● Φ76 ● ● ● ● ● ● ● ● ● ● Φ80 ● ● ● ● ● ● ● ● ● ● Φ83 ● ● ● ● ● ● ● ● ● ● Φ89 ● ● ● ● ● ● ● ● ● ● Φ95 ● ● ● ● ● ● ● ● ● ● Φ102 ● ● ● ● ● ● ● ● ● ● Φ108 ● ● ● ● ● ● ● ● ● ● Φ114 ● ● ● ● ● ● ● ● ● Φ121 ● ● ● ● ● ● ● ● ● Φ127 ● ● ● ● ● ● ● ● ● Standard of boiler tube
Outer Diameter Tolerances Standard Outer Diameter Tolerance GB3087 ≤180 ±1.0%
(min: ±0.5mm)GB5310 ≤50 ±0.5mm >50 ±1.0% Wall Thickness Tolerances Standard Wall Thickness(mm) Tolerance GB3087 3-20 +15%,12.5% >20 ±12.5% GB5310 <3.5 +15%,-10% 3.5-20 +15%,-10% >20 ±10% Chemical composition and mechanical properties Standard Grade Chemical composition(%) Mechanical properties 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 St45.8 ≤0.21 0.10-0.35 0.40-1.20 ≤0.030 ≤0.030 410-530 ≥255 ≥21 DIN 17175 EN 10216-2 ASTM A335 St 35.8, I + III P 235 GH, 1 + 2 P5 15 Mo 3 16 Mo 3 P 11 13 CrMo 44 13 CrMo 4-5 P22 10 CrMo 910 10 CrMo 9-10 P9 X 10 CrMo VNb 9-1 X 10 CrMo VNb 9-1 P91 X 20 CrMo V 12-1 X 20 CrMo V 11-1
