跳至主要内容

ASTM A178 welded boiler tube

 ASTM a178/A 178M Standard Specification for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes


  • Standards: ASTM a178 (ASME Sa178)
  • Grade: Grade A Grade C Grade D
  • Size: OD 1/2in-5in(12.7-127mm)
  • Wall thickness:0.035in-0.360in(0.9-9.1mm)



Different name

Condenser steel tube,heat-exchanger tube,low carbon steel pipe,Resistance welded steel tube ,Bolier flues,Spoerheater flues and safe ends,ERW carbon steel pipes.

Chemical Composition:

Element %Grade AGrade CGrade D
Low carbon steelMedium Carbon SteelManganess Steel
C0.06-0.180.35 Max0.27 Max
Mn0.27-0.630.80 Max1.00-1.50
P0.0350.0350.030
S0.0350.0350.015
Si......0.10 Min.

Mechanical Property:

Grade C & Grade D tubes shall conform to the requirements -tensile properties prescribed below:

TensileRequirements

 Data

GradeC

GradeD

Tensilestrength,min,ksi[MPa]

Yieldstrength,min,ksi[MPa]

Elongationin2in.or50mm,min,%

For longitudinal strip tests a deduction for

Each1⁄32-in[0.8mm]decreaseinwallthicknessbelow5⁄16in.[8mm]

60[415]

37[255]

30

1.50A

70[485]

40[275]

30

1.50A

From the basic minimum elongation of the following percentage points shall be made

Grade A

Tensilestrength,min,ksi[MPa]

Yieldstrength,min,ksi[MPa]

Elongationin2in.or50mm,min,%

47[325]

26[180]

35

Outside diameter and Wall ThicknessTolerance:

Outside Diameter tolWall thickness tol

OD < 50

±0.05mm

S < 4mm

±12.5%

OD > 50

±1%

4--20mm

+15/-12.5%

S≧20mm

±12.5%

Referenced Documents:

ASTM standards:

  • A450/A450M Specification for General Requirements for Carbon,Ferritic Alloy,and Austenitic Alloy steel tubes.
  • E213 Practice for Ultrasonic Examination of Metal pipe and tubing.
  • E273 Practice for Ultrasonic Examination of Longitudinal Welded Pipe and Tubing.


Paint on the pipe as per customer request


Marking as per customer's request

Manufacturing Process: ERW

Heat treatment:
After welding,all tubes shall be heat treated at a temperature of 1650°F(900℃) or higher and followed by cooling in air or in the cooling chamber of a controlled-atmosphere furnace,Cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F(650℃)or higher.

Surface Condition:

Finished tubes shall be free of scale,A slight amount of oxidation will not be considered as scale.

Mechanical Tests Required:

Flattenting Test/Flaring test/Flange test/Crush test/Tension test/Reverse Flattening test/Hydrostatic or Nondestructive Electric Test

Loading


Bundle package/In budle with plastic bag outside/ In wooden case



Marking as per customer's request 


Paint on the pipe as per customer request 

Usage

Used in boiler, superheater, heat-exchanger and pressure equipment in Petrochemical factory, Refinery factory, sugar mill, power plant, power plant, shipbuilding.

评论

发表评论

此博客中的热门博文

ASTM A192 / A192M Standard Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service

The ASTM A192 belongs to the carbon seamless tubes, which is specially designed for high, middle, low pressure purpose in seamless carbon steel boilers and as super heater tubes. ASTM A192 Boiler Tube   Description: This specification has been approved for use by agencies of the Department of Defense. Consult the DoD Index of Specifications and Standards for specific year of issue which has been adopted by the Department of Defense. Size (mm): O.D.:6.0-114.0 W.T.:1-15 L:max 12000 Delivery Condition : As different requirements,It including pickling,etc. Test: Hydrostatic or Nondestructive Electric Test Heat Treatment:Min temperature 650. Surface Condition:Free of scale,A slight amount of oxidation will not be considered as scale. Flattening Test,Flaring Test.Flange Test,Hardness Test,Hydrostatic Test Features Specifications OD(mm) 　 Wall Thickness Unit(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...
发表评论
阅读全文

SA 209 T1

 Seamless carbon molybdenum alloy steel boiler and superheater tubes. ASTM A209 Grade T1a Alloy Steel Seamless Tubes are Carbon Steel Tubes with subsequent addition of chromium, molybdenum and sometimes vanadium are known as chrome Moly Tubes. ASTM Specification alloy steel Tubes are used for high temperature service applications. Seamless Alloy Steel Tubes according to ASTM A209 Grade T1a are reheated and furnished in full annlealed,isothermal annealed or normalised quenched and tempered condition. ASTM A209 Grade T1a Alloy Steel Seamless Tubes have a typical chemistry with additions of 0.44-0.65 Molybdenum. Bearing minimum tensile strength of 365 Mpa ASTM A209 Grade T1a Tubes have a minimum yield strength of 195 Mpa. ASTM A209 ASTM A209 cover several grades of minimum wall thickness seamless carbon molybdenum alloy steel, boiler and superheater tubes. This specification covers tubes 1/2 to 5 in. [12.7 to 127 mm] inclusive, in outside diameter and 0.035 to 0.500 in. [0.9 to 12.7 m...
发表评论
阅读全文

GB3087 steel pipe

 GB3087-2008 is applied to the seamless steel tubes that are made of quality carbon structural steels and used for manufacturing various low and medium pressure boilers. 1 Scope This standard specifies the dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality specifications of seamless steel tubes for low and medium pressure boilers. This standard is applicable to the manufacture of high-quality carbon structural steel hot-rolled (extruded, expanded) and cold drawn (rolled) seamless steel tubes for various structural low-pressure and medium-pressure boilers and locomotive boilers. 2 Reference standard The provisions contained in the following standards constitute provisions of this standard by reference in this standard. At the time of publication, the editions indicated were valid. All standards will be revised and parties using this standard should explore the possibility of using the latest version of the following stan...
发表评论
阅读全文