DIN 2391 hydraulic cylinder mechanical properties st45 steel pipe

Products name:

Size:

OD

30mm-250mm

Wall Thickness

2mm-30mm

Steel material

10#-45#,st35-st52,q345,16Mn

Standard

ASTM ,EN,DIN , JIS ,GB, AISI

Payment: 

 T/T : 30% T/T advance, 70% balance copy of B/L ;L/C : at sight ;T/T and

 L/C:40% T/T  advance, 60% L/C at sigh ; 

Delivery time

10days more or according to the customer’s acquirement

Packing

1.  Bundle packing.

 2.  Beveled end or plain end or vanished as buyer's required.

 3.  Marking: as per customer's requests.

 4.  Painting varnish coating on the pipe.

 5.  Plastic caps at ends.

Sample

 we accept your sample requirement

Order 

 Small order is acceptable(5tons)

Factory

welcome to our factory at anytime

Certification

ISO 9001-2008  

Test

we accept  third party testing

OD

GB/T3639(GB8713)

DIN2391(EN10305)

Our Tolerence

Best Quality

4-30mm

±0.10mm

±0.08mm

±0.05mm

±0.02mm

31-40mm

±0.15mm

±0.15mm

±0.05mm

±0.03mm

41-50mm

±0.20mm

±0.20mm

±0.05mm

±0.03mm

51-60mm

±0.25mm

±0.25mm

±0.08mm

±0.03mm

61-70mm

±0.30mm

±0.30mm

±0.10mm

±0.05mm

71-160mm

±0.30mm

±0.30mm

±0.10mm

±0.05mm

Tolerance in WT

±0.12mm

±0.10mm

±0.05mm

±0.03mm

Process

Diameter

Length

Precision

Inner Hole Roughness

Cold Rolled

30-100mm

≤12 m

H8-H10

0.4-1.6

Cold Draw

30-250mm

≤12 m

H8-H10

0.8-1.6

Honing

40-500mm

≤12 m

H8-H9

0.4-0.8

Rolling

40-400mm

≤7 m

H8

0.4

Inner Diameter

H8

H9

H10

30mm

±0.033

±0.052

±0.084

5-30mm

30-50mm

±0.039

±0.062

±0.100

±0.080

50-80mm

±0.046

±0.074

±0.120

80-120mm

±0.054

±0.087

±0.140

120-180mm

±0.063

±0.100

±0.160

180-250mm

±0.072

±0.115

±0.185

250-315mm

±0.081

±0.130

±0.210

315-400mm

±0.089

±0.140

±0.230

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material

2.100% Dimension & Visual Examination 

3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test

4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test  (ET or UT) 

5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)

6.Straightness Test  (optional)

7.Roughness Test (optional)

8.Intergranular Corrosion Test(optional)

9.Impact Test (optional)

10.Grain Size Determinations (optional)

NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.