STAINLESS STEEL TUBE & PIPE   

1. Field of application

This Standard applies to seamless precision steel tubes; and, in compliance with ISO/DIS 3304, those tube dimensions have een selectied from the range of manufacture dimensions which are mainly used as design elements.

If tubes having the tolerances and are produced according to the technical conditions of deivery as specified in this Standard are to e used as pipelines, then the dimensions specified in DIN 2448 may from time to time be used. These tubes must be ordered according to quality grade C.

Welded Steel Tubing and pipe-Corresponding to DIN 2391-1

Wall thickness s	Nominal dimension	0.5	0.8	1	1.2	1.5	1.8	2	2.2	2.5	2.8	3	4.5	5	5.5	6	7	8	9	10	12	14	16	18	20	22	25
	Permissible deviation
Outside diameter da
Nominal dimension	Permissible deviation
4	+/-0.1
5
6
7
8
9
10
12	【0.08
14
15
16
18
20
22
25
26
28
30
32	【0.15
35
38
40
42	【0.20
45
48
50
55	【0.25
60
65	【0.30
70
75	【0.35
80
85	【0.40
90
95	【0.45
100
110	【0.50
120
130	【0.70
140
150	【0.80
160
170	【0.90
180
190	【1.0
200
220	【1.20
240
260	【1.30
1) For outside diameters of nominal dimensions 4 and 5 mm, the permissible deviation from the nominal dimension s of the wall thickness is 20 % For outside diameters of nominal dimensions 6 to 8 mm, the permissible deviation from the nominal dimension s of the wall thickness is 15%.													s/D =1/60			s/D =1/40					s/D =1/20