Seamless Boiler Tubes Boiler tubes are used in heat exchange appliances in which the energy is transferred from one medium to the other.   How to choose good quality boiler tubes? While choosing boiler tubes, look for the following to pick out the right and good quality tubes:

1. Look at the cross-section of the tube. A good quality seamless tube will have a smooth cross-section and will be devoid of bumps and irregularities.
2. Check the density of the pipe to understand the percentage of impurities in the pipe. If the pipe shows low density, steer clear!
3. Check the surface of the boiler tube. A good quality boiler tube will have a smooth surface. If you find the surface to be rough and uneven, you can be sure that the quality is not up to the mark.

  Quality Assurance We have capability and capacity to ensure boiler tube in superior condition, with advanced inspection and testing procedures, standard tests include dimensional examination, visual checking, chemical composition, mechanical properties as well as non destructive test 100% eddy current test.   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   North Steel has an extensive range of boiler and stay tubes available to meet your boiler tube requirements no matter how demanding. Seamless Boiler Tubes Standard Specifications

GB Chinese National Standards	GB 3087: Seamless steel tubes for low and medium pressure boiler GB 5310: Seamless steel tube for high pressure boiler GB 13296: Seamless steel tubes for boilers and heat exchangers GB 6479: Seamless steel tubes for high-pressure chemical fertilizer equipment GB 9948: Seamless steel tubes for petroleum cracking
ASME American Society of Mechanical Engineers	ASME SA-106: Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service ASME SA-192M: Seamless Carbon Steel Boiler Tubes for High Pressure ASME SA-209M: Seamless carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes ASME SA-210M: Seamless Medium-carbon Steel Boiler and Superheater Tubes ASME SA-213M: Seamless ferritic and austenitic alloy steel boiler, superheater and heat exchanger tubes
ASTM American Society for Testing and Materials	ASTM A213: Seamless ferritic and austenitic alloy steel boiler, superheater and heat exchanger tubes ASTM A 106M: Seamless Carbon Steel Pipe for High-Temperature Service ASTM A192M: Seamless Carbon Steel Boiler Tubes for High Pressure ASTM A210M: Seamless Medium-carbon Steel Boiler and Superheater Tubes ASTM A 335M: Seamless ferritic alloy-steel pipe for high-temperature service
EN Deutsche Industrie Normen	EN 10216-2 : Seamless steel tubes for pressure purposes
DIN Deutsche Industrie Normen	DIN 17175:Seamless Tubes of Heat-resistant Steels – Technical Conditions of Delivery
JIS Japanese Industrial Standards	JIS G3461: Carbon steel boiler and heat exchanger tubes JIS G3462: Alloy steel boiler and heat exchanger tubes JIS G3463: Stainless Steel for Boiler and Heat Exchanger Tubes

 

Steel Grade	Standard			Application
	GB(China)	ASME（USA）	DIN/EN(Euro)
Carbon steel	10 20 20G 20MnG 25MnG	SA-106B SA-192 SA-210A1 SA106C SA-210C	PH265GH P195GH P235GH St35.8 St45.8	Economizer tube Water wall tube
Mo steel	15MoG 20MoG	SA-209 T1 SA-209 T1a SA-209 T1b	15Mo3 16Mo3	Water wall tube Superheater tube Reheater tube
Cr-Mo Steel	12CrMoG 12Cr2MoG 12Cr1MoVG 15CrMoG 10Cr9MoVNb	SA-213 T11 SA-213 T22 SA-213 T24 SA-213 T91 A335 P1  A335 P2 A335 P5  A335P9 A335 P11	12Cr1MoV 14MoV63 10CrMo910 X10CrMoVNb91 10CrMo5-5, 13CrMo4-5	Superheater tube Reheater tube
Cr-Mo-W steel	12Cr2MoWVTiB	SA-213 T23 SA-214 T911 SA-213 T92 SA-213 T122 A335 P23 A335 P911 A335 P92 A335 P122	—	Superheater tube Reheater tube
Austentic Stainless steel	—	AP304  TP304H TP321 TP321H TP347 TP347H TP316 TP316H S30432 TP310HCbN	—	Superheater tube Reheater tube

  Seamless Boiler tubes are installed inside boiler to heat water in order to generate steam, boiler is a closed pressure vessel designed in varieties of types, water tube boiler and fire tube boiler are main types.

• Welded boiler tubes can be supplied from stock to suit your needs
• Hot finished boiler tubes can be supplied from new production
• We can arrange cutting, deburring and testing
• Boiler tubes can be swaged/bulged to suit your requirements
• Shipping can be arranged worldwide
• Stock lengths ranging from 10200-12250mm

Process flowchart

• Steam Boilers
• Power Generation
• Fossil Fuel Plants
• Electric Power Plants
• Industrial Processing Plants
• Cogeneration Facilities
• Boiler tubes need to withstand high pressure and temperature.

If you are interested in and want to get more information, pls send us your inquiry to info@north-steel.com