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Boiler tubes, heat exchanger tubes

Welded pipes

L, LL, KLM finned tubes (finned tubes)

G embedded fin tubes (finned tubes)

(serrated) extruded finned tubes

high frequency welded (serrated) fin tubes (finned tubes)

Laser welded fin tubes (finned tubes)

hot dipped galvanized oval (elliptical) finned tubes, rectangular fin tubes

condenser fin flat tubes

inner finned tubes (finned tubes)

Studded Pipes

H / double H fin tubes (finned tubes)

longitudinal fin tubes (finned tubes)

Tube finning machine

Aluminum plates, strips,foils

Aluminum welding wire rod

Aluminum tubes, profile

Economizer for Boiler

air-cooled heat exchanger (air cooler)

seamless fin tubes with two longitudinal opposite fins

material

standard & specification

 
 
Steel tube's tolerances in dimensions
Specification

Outside Diameter / Tolerance

Tolerance of Wall thickness

ASTM A 450

< 25,4mm

< 38,1mm

< 50,8mm

> 50,8 mm

-0/+20
(min. wall)

+/- 0,10mm

+/-0,15mm

+/-0,20mm

+/-0,25mm

ASTM A 530

< 48,3mm

> 48,3mm

   

+/-12,5%

+0,4/-0,8mm

+/-0,8mm

   

ASTM A 269

< 38,1mm

< 63,5mm

   

+/-10%

+/- 0,13mm

+/-0,25mm

   

EN-ISO 1127

TC D2

+/-1,00%min.+/-0,5mm

T 2 +/-12,5% min.+/-0,40mm

TC D3

+/-0,75%min.+/-0,3mm

T3+/-10%min.+/-0,20mm

TC D4

+/-0,50%min.+/-0,1mm

T4+/-7,5%min.+/-0,15mm

DIN 28180

 

16-20mm

25mm

30mm

38mm

<2mm/>2mm

TC 1

+/-0,10mm

0,12mm

0,15mm

0,20mm

+/-0,2mm/+/-10%

TC 2

0,30mm

0,30mm

0,30mm

0,40mm

+/-0,2mm/+/-10%

TC 3

       

+/-0,2mm+15/-10%


standard

OD(mm)

wt(mm)

L(mm)

SIZE

tolerance

size

tolerance

SIZE

tolerance

ASTM
A312

[10.29,48.26]

+0.40/-0.80

10.3-73

88.9-457 T/D<5%

88.9-457 T/D>5%

>508 T/D<5%

>508 T/D>5%

+20%- 12.5%
+22.5% 12.5%
+15%- 12.5%
+22.5%-12.5%
+15%,- 12.5%

+6/-0
(48.26,114.30]

+0.80/-0.80

(114.30,219.08]

+1.60/-0.80

(219.08,457.20]

+2.40/-0.80

ASTM A213

D<25.4

+0.10/-0.10

D≤38.1

+20%/-0

D<50.80

+3/-0

[25.4,38.1]

+0.15/-0.15

(38.1,50.8)

+0.20/-0.20

D>38.1

+22%/-0

D≥50.8

+5/-0

[50.8,63.5)

+0.25/-0.25

[63.5,76.2)

+0.30/-0.30

[76.2,101.6]

+0.38/-0.38

(101.6,190.5]

+0.38/-0.64

(190.5,228.6]

+0.38/-1.14

ASTM
269

D<12.7

+0.13/-0.13

±15%

+3.2/-0

(12.7,38.1]

±10%

[38.1,88.9)

+0.25/-0.25

+4.8/-0

[88.9,139.7)

+0.38/-0.38

[139.7,203.2)

+0.76/-0.76

JIS
G3459

D<30

+0.30/-0.30

S<2 ±20

 

D≥30

±1%

S≥2 ±10%

JIS
G3463

D<40 +0.25/-0.25

D<40;S<2

+0.40/-0

D≤50;L≤7

+7/-0

[40,50)

D<50;L>7

every 3 meters in addition, deviation increase 3 mm, max. deviation is 15mm

[50,60)

[60,80)

+0.30/-0.30

D<40;S≥2

+20%/-0

[80,100)

+0.40/-0.40

[100,120)

+0.40/-0.60

D>50;L≤7

+10/-0

[120,160)

+0.40/-0.60

D≥40

+22%/-0

D>50;L>7

sam with D<50;L≥7m

[160,200)

+0.40/-0.60

D≥200

+0.40/-1.60

DIN17456
DIN17458

D2

±10%±0.5min

    

 

T4


  ±10% 0.2min
  ±7.5% 0.15 min
D≤40; L≤1m D≤40; L;(1-2)mD≤40; L; (2-3)m

D≤40; L; (3-4)m

D≤40; L; (4-8)m

+1/-0
+2/-0
+3/-0
+4/-0
+5/-0

D3

±0.75%±0.3min

±0.5%±0.1min

40<D<168

L≤6m +5/-0
L>6m +10/-0

ASTM A511 TABALE3

D<12.7 +0.13/-0.13   ±15%

+3.2/-0
[12.7,38.1) ±10% +4.8/-0
[38.1,88.9) +0.25/-0.25
[88.9,139.7) +0.38/-0.38
[139.7,203.2) +0.76/-0.76

[203.2,219.8)

+1.14/-1.14

[219.8,323.85)

+1.57/-1.57

ASTM A511 TABALE4

D≤76.2

+0.56/-0.58

S≤2.77 ±16.5%

+4.76/-0

D≤76.2

0.56/-0.58

S≤2.77

±16.5%

2.77<S≤4.37

±15%

4.37<S5.16

±14%

S>5.16

±12.5%

(76.2,139.7]

+0.79/-0.79

S≤2.77

±16.5%

2.77 S 4.37

±15%

4.37<S5.16

±14%

S>5.16

±12.5%

(139.7,203.2]

+1.19/-1.19

4.37<S 5.16

±14%

S>5.16

±12.5%

 
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