Inside honed / skived and roller burnished tubes H8

NIMAX H8

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Dimensions:

  • Inside diameter: between 25-300 mm
  • Outside diameter: according EN 10305-1(DIN 2391)

Steel grades:

  • E355 +SR (St 52 BK+S)
  • E410 +SR (St E460 BK+S)

Roundness: max IT

Processed surface roughness:

  • max Ra=0,6 µm (normally in the range 0,30-0,40 µm) for honed surface
  • max Ra=0,3 µm (normally in the range 0.15-0.22 µm) for skived and roller burnished surface

Length: max. 12000 mm

Straightness:

  • Local deviation: max. 1 mm per each meter of length
  • Total deviation:
    • for tubes with length less than 6 m - max. 3.5 mm
    • for tubes with length bigger than 6 m, the deviation shall be increased by 0.5 mm for each meter over 6 m
CHEMICAL COMPOSITION, % BY WEIGHT
STEEL GRADE C max Si max Mn max P max S Ni max V max
St52 (E 355) 0.2 0.5 1.5 0.025 0.02-0.04 - -
StE 460 (E 410) 0.2 0.5 1.7 0.025 max 0.015 0.8 0.2
MECHANICAL PROPERTIES (According to EN 10305-1)
STEEL GRADE
Delivery condition		 Tensile strenght Rm Yield point Rp0.2 Elongation A5
- N/mm2 - - N/mm2 - - % min -
  Wall thickness ≤ 16mm Wall thickness ≥ 16mm  
E 355 +SR 600 520 490 14
E 410 +SR 700 620 620 15
E 355 +N 490-630 355 355 22
E 410 +N 560-730 460 450 22
Table with sizes of tubes - H8
OUTSIDE DIAMETER INSIDE DIAMETER
mm mm
35 20 25          
40 25 30 32 - - - -
42 30 32   - - - -
45 25 30 32 35 - - -
50 30 35 40 - - - -
52 40 - - - - - -
55 40 45 - - - - -
60 40 45 50 - - - -
62 50 - - - - - -
65 45 50 55 - - - -
70 50 55 60 - - - -
72 - - 60 - - - -
73 - - 63 - - - -
75 55 60 63 65 - - -
78 - - 63 - - - -
80 55 60 63 65 70 - -
82 70 - - - - - -
83 - - 63 - - - -
85 60 65 70 75 - - -
90 60 65 70 75 80 - -
92 - - - - 80 - -
95 70 75 80 85 - - -
100 70 75 80 85 90 - -
102 - - - - 90 - -
105 75 80 85 90 95 - -
110 80 85 90 95 100 - -
112 - - - - 100 - -
115 85 90 95 100 105 - -
120 90 95 100 105 110 - -
125 100 105 110 115 - - -
130 100 110 115 120 - - -
135 110 115 120 125 - - -
140 100 110 115 120 125 130 -
145 120 125 130 135 - - -
150 120 125 130 135 140 - -
155 125 130 135 140 - - -
160 120 125 130 135 140 145 150
165 140 145 150 - - - -
170 140 150 155 160 - - -
175 150 160 - - - - -
180 140 150 160 - - - -
185 160 - - - - - -
190 160 170 180 - - - -
195 160 170 - - - - -
200 160 170 180 190 - - -
205 180 - - - - - -
210 180 200 - - - - -
215 180 200 - - - - -
220 180 190 200 - - - -
225 200 - - - - - -
230 200 - - - - - -
235 200 - - - - - -
240 200 - - - - - -
245 200 - - - - - -
EN
10305-1
10305-2		 DIN
2391
2393
17179		 AFNOR
NF-A49310
NF-A49643		 B.S.
6323		 UNI
7945
7946
663
6403		 JIS
G3445 		ASTM
A 513
E355 St52
St52-3		 Tu 52b
Ts 47a		 CEW5-ERW5 Fe 490
Fe 510 D
Fe 52-2
Fe 510 		STKM 19 1024
E410 StE 460 20MV6 - - - -

Packaging

Packaging Packaging

NIMAX H8 tubes can be supplied with two packaging options:

  • In bundles for standard lengths
  • In wooden europalets from smallest cut lenghts

The tubes are packing in bundles with max. 1500 kg.

Each bundle they will being equipped with two special thongs.

Marking

The tubes are continuously marked with the following text: "PRODUCER / Steel grade / EN 10305-1 / ODxID / HEAT number"

The tubes are inside and outside protected with oil in order to assure the temporary protection against corrosion.

Ends of tubes are protected with plastic plugs.

On each bundle (or wooden palet) they will be applied minim one label for identification.