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DIN 2391 ST30Al Precision Steel Tube

SUZHOU FRANK STEEL CO.,LTD.

DIN 2391 ST30Al Precision Steel Tube

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Brand Name : FRANK STEEL

Model Number : DIN2391 ST30Al

Certification : DNV / LR / BV/ SGS

Place of Origin : P.R.CHINA

MOQ : 1 Tons or negotiation

Price : Negotiation

Payment Terms : T/T, L/C

Supply Ability : 1000 Ton per 30 days

Delivery Time : about 30 work days

Packaging Details : Simple packing in hexagon shape per bunch or plywooden boxes

Application : Heavy Industrial Machinery Pipe

Standard : DIN2391 ST30Al

Thickness : 0.8-12mm

Technique : Cold Drawn

Length : As customer's require

Type : Seamless,spin over

Outer diameter : 6-168mm

Features : No deformation in Cold bending

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DIN2391 ST30Al Precision Seamless Steel Pipe, Flaring Without Crack

1. Description

DIN2391 ST30 AI precision cold-rolled seamless steel pipe, after cold drawing, pickling, cold rolling and high temperature heat treatment, the steel pipe surface is bright and smooth, with high precision and high finish. This kind of steel pipe has low carbon content and very low silicon content, and its hardness, tensile strength and yield strength are slightly lower than those of other steel grades. However, due to this feature, it is easier to be reprocessed, and its process performance is excellent, such as bending steel pipe. Steel pipe can bear high pressure and impact, especially suitable for hydraulic machinery and auto parts industry. This steel pipe is widely used in hydraulic equipment, die casting machinery, engineering machinery, automobile industry, and chemical fiber.

Size: 6mm-168mm.
W.T.: 0.8mm-12mm.
Shape: Round.

Production type: Cold drawn or cold rolled.

Length: Single random length/ Double random length or as customer’s actual request max length is 10m.

Grade: St30 Si, St30 Al, St35, St45, St52.

2. Surface Quality

There are generally three delivery states.

A. NBK state (no oxidation bright heat treatment) Features--- high precision, good finish, no oxide layer.

B. Black phosphating state Features--- bright in black, good color, strong rust resistance.

C. Galvanizing State Features--- meet special requirements

3. Chemical Composition

Steel name C max Si max Mn P max S max
St 30 Si 0.1 0.3 ≤0.55 0.025 0.025
St 30 Al 0.1 0.05 ≤0.55 0.025 0.025
St 35 0.17 0.35 ≥0.40 0.025 0.025
St 45 0.21 0.35 ≥0.40 0.025 0.025
St 52 0.22 0.55 ≤1.60 0.025 0.025

4. Mechanical Properties

Steel Grade   Minimum values for the delivery condition                      
Steel Name Steel Number BK   BKW   BKS     GBK   NBK    
    Rm A % Rm A % Rm ReH A % Rm A % Rm ReH A %
    Mpa   Mpa   Mpa Mpa   Mpa   Mpa Mpa  
St 30 Si 1.0211 430 8 380 12 380 280 16 280 30 290 to 420 215 30
St 30 Al 1.0212 430 8 380 12 380 280 16 280 30 290 to 420 215 30
St 35 1.0308 480 6 420 10 420 315 14 315 25 340 to 470 235 25
St 45 1.0408 580 5 520 8 520 375 12 390 21 440 to 570 255 21
St 52 1.058 640 4 580 7 580 420 10 490 22 490 to 630 355 22

5. Details picture

DIN 2391 ST30Al Precision Steel Tube


Product Tags:

2391 precision steel pipe

      

ST30Al seamless steel tube

      
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