High Pressure Seamless Boiler Carbon Steel Tube
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Product Details
| Customization: | Available |
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| Warranty: | 1 Year |
| Type: | Seamless |
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Basic Info.
- Model NO.
- MDS-BP002
- Technique
- Hot Rolled
- Material
- Carbon Steel
- Surface Treatment
- Black
- Usage
- Boiler Pipe
- Section Shape
- Round
- Transport Package
- 1) in Bundle with Steel Strip 2) in Bulk
- Specification
- 1/2 inch ~ 28 inch
- Trademark
- MIDAS
- Origin
- China
- HS Code
- 7304199000
- Production Capacity
- 50000 Ton/Month
Product Description
High Pressure Seamless Boiler Carbon Steel Tube
Boiler Steel Pipe
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 A179; ASTM A192; ASTM A210;ASTM A213, Grade T2/T5/T9/T11/T12/T22/T23/T24/T36/T9;EN10216/BS3059;JIS G3454/G3456/G3461
End: Square Ends/Plain Ends (straight cut, saw cut, torch cut),Beveled/Threaded Ends
Surface:Black Painting/Oil Painting/Anti-Rust oil/Anti-Corrosive Coating
Packing: Bundled,Plastic Caps Plugged,Waterproof Paper/Bag Wrapped
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
Production process of boiler tube
Boiler Pipe Manufacturing methods
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.
Heat treatment methods applied in the boiler pipes
Heat treatment is a method of changing the physical properties of high pressure boiler pipe by heating and cooling. Heat treatment can improve the microstructure of high pressure boiler pipe, so as to meet the required physical requirements. Toughness, hardness and wear resistance are obtained by heat treatment. In order to obtain these characteristics, it is necessary to adopt quenching, annealing, tempering and surface hardening.
1. Quenching
Hardening, also called quenching, is that high pressure boiler pipe is heated evenly to the appropriate temperature, then quickly immerse in water or oil for rapid cooling, and cooling in the air or in the freezing zone. So that the high pressure boiler pipe can obtain the required hardness.
2. Tempering
High pressure boiler pipe will become brittle after hardening. And the stress caused by quenching can make the high pressure boiler pipe tapped and broken. The tempering method can be used to eliminate brittleness. Although the hardness of high pressure boiler pipe is lighter reduced, its the toughness can be increased to reduce the brittleness.
3.Annealing
Annealing is the method to eliminate the internal stress of high pressure boiler pipe. The annealing method is that the steel parts need to be heated to the critical temperature, then put in dry ash, lime, asbestos or closed in the furnace, then let it cooling slowly.
We can produce all sizes of boilers tubes,according to European,Chinese,American,Japanese standard.With fast delivery time,supportive payment term.All tubes production processes are controlled strictly.with high level of quality requirement,all tubes are inspection before delivery,and also accept third party inspection before delivery.
Test
The Steel Pipe Should Be Tested Hydraulically One By One. The Maximum Test Pressure Is 20 MPa. Under The Test Pressure, The Stabilization Time Should Be Not Less Than 10 S, And The Steel Pipe Should Not Leak.
After The User Agrees, The Hydraulic Test Can Be Replaced By Eddy Current Testing Or Magnetic Flux Leakage Testing.
Nondestructive Test:
Pipes That Require More Inspection Should Be Ultrasonically Inspected One By One. After The Negotiation Requires The Consent Of The Party And Is Specified In The Contract, Other Non-Destructive Testing Can Be Added.
Flattening Test:
Tubes With An Outer Diameter Greater Than 22 Mm Shall Be Subjected To A Flattening Test. No Visible Delamination, White Spots, Or Impurities Should Occur During The Entire Experiment.
Hardness Test:
For Pipe Of Grades P91, P92, P122, And P911, Brinell, Vickers, Or Rockwell Hardness Tests Shall Be Made On A Specimen From Each Lot.
Bend Test:
For Pipe Whose Diameter Exceeds NPS 25 And Whose Diameter To Wall Thickness Ratio Is 7.0 Or Less Shall Be Subjected To The Bend Test Instead Of The Flattening Test. Other Pipe Whose Diameter Equals Or Exceeds NPS 10 May Be Given The Bend Test In Place Of The Flattening Test Subject To The Approval Of The Purchaser.
The Steel Pipe Should Be Tested Hydraulically One By One. The Maximum Test Pressure Is 20 MPa. Under The Test Pressure, The Stabilization Time Should Be Not Less Than 10 S, And The Steel Pipe Should Not Leak.
After The User Agrees, The Hydraulic Test Can Be Replaced By Eddy Current Testing Or Magnetic Flux Leakage Testing.
Nondestructive Test:
Pipes That Require More Inspection Should Be Ultrasonically Inspected One By One. After The Negotiation Requires The Consent Of The Party And Is Specified In The Contract, Other Non-Destructive Testing Can Be Added.
Flattening Test:
Tubes With An Outer Diameter Greater Than 22 Mm Shall Be Subjected To A Flattening Test. No Visible Delamination, White Spots, Or Impurities Should Occur During The Entire Experiment.
Hardness Test:
For Pipe Of Grades P91, P92, P122, And P911, Brinell, Vickers, Or Rockwell Hardness Tests Shall Be Made On A Specimen From Each Lot.
Bend Test:
For Pipe Whose Diameter Exceeds NPS 25 And Whose Diameter To Wall Thickness Ratio Is 7.0 Or Less Shall Be Subjected To The Bend Test Instead Of The Flattening Test. Other Pipe Whose Diameter Equals Or Exceeds NPS 10 May Be Given The Bend Test In Place Of The Flattening Test Subject To The Approval Of The Purchaser.
Packing
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.
1)Plastic caps plugged at the two sides of pipe ends
2)Should be avoided by the steel strapping and transport damage
3)Bundled signs should be uniform and consistent
4)The same bundle(batch) of steel pipe should be came from the same furnace.
5)The steel pipe has the same furnace number, the same steel grade, the same specifications.
1)Plastic caps plugged at the two sides of pipe ends
2)Should be avoided by the steel strapping and transport damage
3)Bundled signs should be uniform and consistent
4)The same bundle(batch) of steel pipe should be came from the same furnace.
5)The steel pipe has the same furnace number, the same steel grade, the same specifications.
Our packing can meet any needs of the customers.
MIDAS participates in international and domestic exhibitions every year.
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