DIN/EN steel pipe

DIN/EN seamless pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers’ trust and consistently favorable comments.

Dimension tolerance

Standard Tolerance
Out side Diameter Wall Thickness Length
mm
DIN 1630 SeeTable 1 SeeTable 2 SeeTable 3
DIN 2391 SeeTable 4 10% SeeTable 5
DIN 2440 SeeTable 6 -12.5%, + A 1m
DIN 2441 SeeTable 2 -12.5%, + A 1m
DIN 17172 SeeTable 7 130 10% Fixed
Length
500
>130 12.5%
DIN 17173 SeeTable 1 SeeTable 2 SeeTable 3
DIN 17175 SeeTable 1 SeeTable 2 SeeTable 3
DIN 17176 SeeTable 8 SeeTable 2 SeeTable 3
DIN 17179 SeeTable 1 SeeTable 2 SeeTable 3
DIN 28180 Outside
Diameter
Class 1 Class 2 Class 3 SeeTable 9 5000 -0,+5
16-30 0.08 Not
Applicable
0.50 >5000
-10000
-0,+10
38 0.15 >10000 By
agreement
A: The upper Limit is fixed by the permissible weight deviation.

 

Table 1: Permissible Deviation in Outside Diameter in DIN 1630, 17173, 17175, 17179

Outside Diameter – da
mm
Pertilisable Deviation in Diameter
Tube Barrel and Tube Ends At Tube ends, Subject to
Particular agreement
<100 1% da; (values up to 0.5mm
are permitted)
0.4mm
100a<200 1% da 0.5% da.
200 1% da 0.6% da

 

Table 2: Permissible Deviation in Wall Thickness in DIN 1630, 17173, 17175, 17176, 17179

Permissible Deviation in Wall Thickness for Outside Diameter, da. and Wall Thicknesses, s
dia 130mm 130mm<da320mm 320mm<da660mm
s 2 2<s4 s>4 s0.05da 0.05da<s
.11da
s>0.11da. s0.05da 0.05da<s
0.09da
s>0.09da
+5%
-10%
+12.5
%10
9% +17.5%
-12.5%
12.5% 10 +20%
-15%
+15%
-12.5%
+12.5%
-10%

 

Table 3: Types of Length and Permissible Deviation in Length in DIN 1630, 17173, 17175, 17176, 17179

Type of Length Premissuble Deviations in Length,mm
Manfacturing Length By agreement
Specified Length 500
Exact
Length
6m -0,+10
>6-12mm -0,+15
>12m By agreement

 

Table 4: Permissible Deviation in Outside Diameter in DIN 2391

Outside
Diameter
Permissible
Deviation
Outside
Diameter
Permissible
Deviation
Outside
Diameter
Permissible
Deviation
4-10mm 0.08mm 75-81mm 0.35mm 170-180mm 0.90mm
12-30mm 0.1mm 85-90mm 0.40mm 190-200mm 1.0mm
32-40mm 0.15mm 95-100mm 0.45mm 220-240mm 1.20mm
42-50mm 0.20mm 110-12mm 0.50mm 260mm 1.30mm
55-60mm 0.25mm 130-146m 0.70mm
65-70mm 0.30mm 150-160m 0.80mm

 

Table 5: Types of Length and Permissible Deviation in Length in 2391

Type of Length Premissuble Deviations in Length,mm
Manfacturing Length By agreement
Fixed Length <2000 500
2000 10%
Exact
Length
<500mm -0,+2
>500-2000mm -0,+3
>2000-5000 -0,+5
>5000-7000 -0,+10
>7000 By agreement

Table 6: Permissible Deviation in Outside Diameter in DIN 2440, 2441

Outside Diameter
(mm)
Max
(mm)
Min
(mm)
Outside Diameter
(mm)
Max
(mm)
Min
(mm)
10.2 10.6 9.8 48.3 48.8 47.9
13.5 14.0 13.2 60.3 60.8 59.7
17.2 17.5 16.2 76.1 70.6 75.3
21.3 21.8 21.0 88.9 89.6 88.0
26.9 27.3 26.5 114.3 115.0 113.1
33.7 34.2 33.3 139.7 140.0 138.5
42.4 42.9 42.0 165.1 166.5 163.9

 

Table 7: Permissible Deviation in Outside Diameter in DIN 17172

Nominal Outside
Diameter-”D”
(mm)
Max.Permissible Diameter Variation
Pipe Body Pipe End
D<200 1%(Values up to 0.5mm
are permissible in all case)
1%(Values up to 0.5mml.
are permissible in A case)
200 D<500 1% 0.7%
500鈮 1% 1.6mm

 

Table 8: Permissible Deviation in Outside Diameter in DIN 17176

Manufacturing Process Limit Deviation of Outside Diameter
Cold Forming 0.75%
Hot Forming 100mm 0.75%
>100-320mm 0.9%
>320mm 1.0%

 

Table 9: Permissible Deviation in Wall Thickness in DIN 28180

Tube Outside Diameter Permisible Deviations In Wall Thickness for Thicknesses
Up to 2 Exceeding 2
Tolerance of Classes I and 2 0.20 10% of Wall Thickness
Tolerance Class 3 0.20 -10%, +15% of Wall Thickness

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>