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I nternational Standard (f@ 6758 0 * 4 4! l ! ig! lb I NTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEIQlYHAPOAHAR OPrAHH3AUMR I lO CTAHAAPT~3AlW4 ORGANlSATlON tNTERNATlONALE DE NORMALISATION Welded[.]

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Desc riptors : hea t exc ha ngers, stel tubs, smoth tubs, welded tubs, a lloy stels, u a lloyed stels, dimenion , ma ss, dimen iona l

$j

tolera nces

s

Pric e ba sed on 3 pges

IS0 (h Internatio al Orga niza tio fo r Standardizatio ) is a worldwid fe eratio of

Au talia

In ia

Au tia

Israel

De mark

New Z ea land

Fra nc

Pola nd

Romania

So th Afica, R ep of

Spa in

Switz rland

I

Ja pa n

@ Interna tiona l Orga niza tion for Sta nda rdiza tion, 190 0

Printe in Switz rla nd

Welded steel tubes for hea t exchangers

inte d d for e po ure to fla me

sta inle s ste l tub es

IS0 2 0413 a nd to te t ca te ory I or IV for IS0 2 0415, e c pt

lea k tig tn s

c a ser

Outside

m

15

Ma sses pr uit len th, k g/m

T a ble 2 - Au te itic sta inle s

ste ls

Outside

m

Ma sses per u it len th, k g/m

-

1

4.2 T olera nces

4 2.3 L en th

4.2.1.1

Diameter

Toleran e

f 0.15 m

4.2.1.2 Au te itic sta inle s ste l tub es

Diameter

T olera nc

f 0,15 m

Clas 2 :

Diameter

T olera nc

4 2.2 T hickne s

toleranc s a ll a pply :

+ 2

0

%

T he ex ternal weld up set s all be remo e c mpletely, ie flu h

NOT - T he thickne s s a nd mas e per u it le gth in ta b le 1 a nd 2

are e pre s d in mean v a lu s Wh n minimum thicn se a re spe i-

fie , th mas e a re re uire to be in reas d by 10 %

a nc o le gth s a ll be :

L en th

Up to a nd in lu in 6 O fX l m

Tolera nc s

+ 3,O m

0

O ver 6 0 0 m up to a nd in lu in

+ 4,5

0 m

0

O ver 12 0 0 m up to a nd in lu in

0

O ver 15 0 6 m up to a nd in lu in

0

thic kn s);

d) ste l ty p e

natives T he purc a ser s a ll state in th ord r th re uireme ts

referin th reto; if n in ic a tio is giv en, d lv ery wi be ac or

Annex

tube to tube-s e t c learanc es, pric ularly wh n th la tter were originaly pro uc ed in inc h siz s

1) Only f or stainle s ste l tube

NOT - The mas e a re to be c alc ulate in ac c ordanc e with IS0 42 0

3