ASTM A179 Heat Exchanger Tubes

ASTM A179/A179M, ASME SA179/SA179M is the standard applicable to Seamless cold drawn low carbon steel heat exchanger and condenser tubes.
Seamless cold drawn low carbon steel heat exchanger and condenser tubes.

Application: Our ASTM A179 seamless tubes are used in sugar mills & distilleries, pumps and petrochemicals, cement and construction industries and steel plants.
Production Standard, Grade, Steel No: ASTM A179/ASME SA179 GB6479 10, 20, 16Mn, 15MnV, 12CrMo, 15 CrMo, 12Cr2Mo, 12SiMoVNb
Delivery conditions: Annealed, Normalized, Normalized and Tempered
Mill test certificates will be issued according to EN10204 3

Size (mm):
Outer Dimensions.: 6.0mm – 114.0mm
Wall Thickness:1mm – 15 mm
Length: max 12000mm

Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles.

Description:

1. _ASTM A179 (ASME SA179)
2. products mainly used: apply to the heat exchangers, condensers and heat transfer equipment an.d similar pipe.
3. the main products of steel / steel grade: A 179
4. _diameter_ 10.3 to 76.2 mm thickness_ 1.2 to 12 mm Length_ 6 m above, and, according to customer requirements, The supply of steel and other specifications of the pipe_
5. chemical composition and mechanical properties

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

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Φ32

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Φ34-Φ36

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Φ38

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Φ40

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Φ42

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Φ45

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Φ48-Φ60

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Φ63.5

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Φ68-Φ73

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Φ76

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Φ80

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Φ83

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Φ89

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Φ95

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Φ102

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Φ108

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Φ114

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Φ121

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Φ127

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Φ133

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Φ140

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Φ146

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Φ152

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Φ159

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Φ168

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Grade and Chemical Composition (%)

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

SA-450/SA-450M

OD In (mm)	+	–	WT In(mm)	+	–
<1(25.4)	0.10	0.10	≤1.1/2(38.1)	20%	0
11.1/2(25.438.1)	0.15	0.15	>1.1/2(38.1)	22%	0
>1.1/2<2(38.150.8)	0.20	0.20
2<2.1/2(50.863.5)	0.25	0.25
2.1/2<3(63.576.2)	0.30	0.30
34(76.2101.6)	0.38	0.38
>47.1/2(101.6190.5)	0.38	0.64
>7.1/29(190.5228.6)	0.38	1.14

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)

Wall thickness & Tolerance

Outside Diamter, mm	Tolerance, %
3.2≤OD＜38.1	+20/-0
38.1≤OD≤76.2	+22/-0

Cold drawn seamless carbon steel tube for heat exchanger and condenser