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ASTM A179 Boiler Tube

Type:ASTM A179 Boiler tube

Size:

OD: 6mm-168mm
WT:  1mm-12mm
Length: 0.5mtr-20mtr

Standard & Grade:ASTM A179

Ends:Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends

Packing:Bundle or bulk , wooden case or other seaworthy packing or for the client's requirement

Usage:Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes

  • Description
  • Specification
  • Standard
  • Process
  • Packing

Boiler tubing is used in these industries:

steam Boilers
Power Generation

Fossil Fuel Plants

Electric Power Plants
Industrial Processing Plants

Cogeneration Facilities

Boiler tubes need to withstand high pressure and temperature.




ASTM A179 covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular, heat exchanger, condensers, and other heat transfer services.

ASTM A 179 steel tube is supplied and produced by cold drawning method.

Chemical composition contains carbon, manganese, phosphorus, and sulfur.

Test required: hardness test, flattening test, flaring test, flange test, and hydrostatic test.

STANDARD OF ASTM A179  Boiler tube

Standard


Chemical Composition(%)

Mechanical Properties

Grade

c

Si

Mn

P

S

Mo

Cr

V

Tensile STrength (Mpa)

Yield STrength(Mpa)

Elongation(%)

ASTM

A179

0.06-0.18

/

0.27-0.63

≤0.035

≤0.035

/

/

/

≥325

≥180

≥35

A179


DIENSION TOLERANCES OF ASTM A179 Boiler tube

ODIn (mm)

+

-

WTIn (mm)

+

-

<1(25.4)

0.1

0.1

≤1.1/2(38.1)

20%

0

1∼1.1/2(25.4∼38.1)

0.15

0.15

>1.1/2(38.1)

22%

0

>1.1/2∼<2(38.1∼50.8)

0.2

0.2




2∼<2.1/2(50.8∼63.5)

0.25

0.25




2.1/2∼<3(63.5∼76.2)

0.3

0.3




3∼4(76.2∼101.6)

0.38

0.38




>4∼7.1/2(101.6∼190.5)

0.38

0.64




>7.1/2∼9(190.5∼228.6)

0.38

1.14






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









Φ38









Φ40










Φ42










Φ45









Φ48-Φ60








Φ63.5








Φ68-Φ73









Φ76





Φ80





Φ83





Φ89





Φ95





Φ102





Φ108





Φ114






Φ121






Φ127






Φ133






Φ140







Φ146







Φ152







Φ159







Φ168










ASTM A179 / A179M - 90a Standard Specification forSeamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes

This specification covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test.

Note:

(1)Mill test certificates will be issued according to EN10204.3

(2)All tubes shall be supplied as per applicable ASTM Specification.



U-Bend Fabrication Tolerances

Item

Condition (when)

Tolercance


Nominal bend radius ≤ 2 x nominal OD

less than or equal to 12%

Ovality

2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD

less than or equal to 10%


Nominal bend radius > 4 x nominal OD

less than or equal to 5%


Nominal bend radius ≤ 2 x nominal OD

0.75 x nominal wall

Mimimum wall thickness

2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD

0.8 x nominal wall


Nominal bend radius > 4 x nominal OD

0.9 x nominal wall


Nominal bend radius ≤ 8" (200mm)

+/-3/64"(1mm)

Bending Radius

8" (200mm) < Nominal bend radius ≤ 16" (400mm)

+/-1/16"(1mm)


Nominal bend radius >16" (400mm)

+/-5/64"(1mm)

Disrance between legs


Max 1/16"(1.5mm)

Wall thinning of bending area


Max 17%

Difference between leg lengths at the ends

Leg length ≤ 16' (4.88m)

+1/8"(3mm)

Leg length > 16' (4.88m)

+3/16"(5mm)

Deviation from plane of bend


≤ 3/16"(1.5mm)

Flattening on bend


≤ 10% nominal diameter

Straight leg length

≤5m

+1/8"(3mm)

>5m

+3/16(5mm)

Total tube length including radius

≤6m

+3/16(5mm)

>6m

+5/16"(8mm)


Chemical Composition

C

Mn

P≤

S≤

Si≤

0.06-0.18

0.27-0.63

0.035

0.035

0.25


Mechanical properties

Yield Strength (Mpa)

Tensile Strength (Mpa)

Elongation (%)

≥180

≥325

≥35


Material Comparison Tables

ASTM

UNS NO.

KOREA/JAPANES

GERMAN

BRITISH

BELGIAN

FRENCH

ITALIAN

KS/JIS Symbol

KS/JIS Numbe

Re

DIN Type

DIN

Materiral
Number

Re

B.S

B.S Grade

Re

NBN Type

NBN Grade

Re

AF

NF

Re

UNI Type

UNI

Re

ASTM A179

K01200

STBH 340 / STB 35

D3563 / G3461


St 35.4

1629

1.0309


3606

CFS 320


D 37-2

629

(3b)

TU 37 C

A49-215

(3a)

C 14

5462






St 35.8

17175

1.0305

Plus
DIN 2391 Gutegard C.NBK











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