Жесткий шланг из стали DIN 2391

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Product Description
Product name: DIN 2391 phosphating precision seamless steel pipe
Standard: EN10305-4 (DIN2445/2), EN10305-1 (DIN2391), ASTM A179
Steel grade: E235 (ST35 ST37.4), E355 (ST52 ST52.4)
Size: OD: 4-120mm, WT: 0.5-10mm
Length: fixed 6m or as your request
Surface Treatment: Phosphating – External phosphating coating
Delivery condition: +N (NBK) normalized under a controlled atmosphere
Delivery time: 15-45 days, according to the quantity and stock availability

Product Advantages

• Anti-rust — High anti-corrosion & anti-rust
• Total phosphating — Phosphating inside and outside of steel pipe
• Delicate — The phosphated coating is delicate, high lubricity, uniform color
• Exterior — Good looking in appearance
• Painting — Suitable for painting, and have strong coloring ability

Product Video - Key Points
Cold drawn / cold rolled: High dimensional accuracy, excellent internal and external wall finish
Eddy current testing: Each steel pipe is tested by eddy current flaw detection to ensure product quality
Anaerobic bright heat treatment (NBK): Annealing in vacuum with protective gases to maintain rolling accuracy, smoothness, mechanical properties and metallographic structure
Surface treatment (phosphated): High-quality phosphating on inner and outer walls to form a uniform dense crystal structure with strong corrosion resistance, porosity control and good paint/plastic-spraying affinity

Dimension (selected rows)
OD | Thickness (mm)
4 | 6*1, 6*1.5, 6*2
6 | 6*1, 6*1.5, 6*2
8 | 8*1, 8*1.5, 8*2
10 | 10*1, 10*1.5, 10*2
12 | 12*1, 12*1.5, 12*2, 12*2.5
14 | 14*1, 14*1.5, 14*2, 14*2.5, 14*3
15 | 15*1, 15*1.5, 15*2, 15*2.5, 15*3
16 | 16*1, 16*1.5, 16*2, 16*2.5, 16*3
18 | 18*1.5, 18*2, 18*2.5, 18*3, 18*3.5, 18*4
20 | 20*1.5, 20*2, 20*2.5, 20*3, 20*3.5, 20*4
22 | 22*1.5, 22*2, 22*2.5, 22*3, 22*3.5, 22*4
25 | 25*2, 25*2.5, 25*3, 25*3.5, 25*4
28 | 28*2, 28*2.5, 28*3, 28*3.5, 28*4
30 | 30*2, 30*2.5, 30*3, 30*3.5, 30*4, 30*4.5, 30*5
32 | 32*2, 32*2.5, 32*3, 32*3.5, 32*4, 32*4.5, 32*5
34 | 34*2, 34*2.5, 34*3, 34*3.5, 34*4, 34*4.5, 34*5, 34*6
35 | 35*2, 35*2.5, 35*3, 35*3.5, 35*4, 35*4.5, 35*5, 35*6
38 | 38*2, 38*2.5, 38*3, 38*3.5, 38*4, 38*4.5, 38*5, 38*6
40 | 40*2.5, 40*3, 40*3.5, 40*4, 40*4.5, 40*5, 40*6
42 | 42*2.5, 42*3, 42*3.5, 42*4, 42*4.5, 42*5, 42*6
45 | 45*2.5, 45*3, 45*3.5, 45*4, 45*4.5, 45*5, 45*6
46 | 46*2.5, 46*3, 46*3.5, 46*4, 46*4.5, 46*5, 46*6
48 | 48*2.5, 48*3, 48*3.5, 48*4, 48*4.5, 48*5, 48*6
50 | 50*2.5, 50*3, 50*3.5, 50*4, 50*4.5, 50*5, 50*6
54 | 54*3, 54*3.5, 54*4, 54*4.5, 54*5, 54*6
60 | 60*3, 60*3.5, 60*4, 60*4.5, 60*5, 60*6, 60*8

Chemical Composition (selected grades)
Steel grade | Number | C max. | Si max. | Mn max. | P max. | S max. | Total min./other
E215 | 1.0212 | 0.10 | 0.05 | 0.7 | 0.025 | 0.015 | Total 0.025
E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.015 | —
E355 | 1.0580 | 0.22 | 0.55 | 1.6 | 0.025 | 0.015 | —

Tolerance (selected ranges)
Outer Diameter range | Allowable tolerance (GB/T3639) | Allowable tolerance (DIN2391) | Special tolerance OD | Special tolerance WT
4mm-20mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.05mm
20mm-30mm | ±0.10mm | ±0.08mm | ±0.08mm | ±0.08mm
31mm-40mm | ±0.15mm | ±0.15mm | ±0.10mm | ±0.08mm
41mm-60mm | ±0.20mm | ±0.20mm | ±0.15mm | ±0.15mm
61mm-80mm | ±0.30mm | ±0.30mm | ±0.20mm | ±0.20mm
81mm-120mm | ±0.45mm | ±0.45mm | ±0.30mm | ±0.30mm

Mechanical Properties
Steel grade | Number | Yield strength (MPa) min. | Tensile strength (MPa) | Elongation (%) min.
E215 | 1.0212 | 215 | 290 to 430 | 30
E235 | 1.0308 | 235 | 340 to 480 | 25
E355 | 1.0580 | 355 | 490 to 630 | 22

FAQ (selected)
1. Can I get some samples? Yes. Samples can be provided; sample fee and shipping cost are required in advance and the sample fee is refundable after order placement.
2. Can sample be produced? Yes, samples or technical drawings can be made.
3. What are your payment terms? Payment ≤ $1000: 100% prepayment. Payment ≥ $1000: 30% T/T in advance, balance before shipment.
4. What are your delivery terms? EXW, FOB, CFR, CIF, DDU.

Caractéristiques / spécifications techniques

• Nom produit: DIN 2391 phosphating precision seamless steel pipe
• Normes: EN10305-4 (DIN2445/2), EN10305-1 (DIN2391), ASTM A179
• Aciers disponibles: E215 (1.0212), E235 (1.0308), E355 (1.0580)
• Plage de dimensions: OD 4-120 mm; épaisseur parois 0.5-10 mm; longueurs: 6 m fixes ou sur demande
• Traitement de surface: phosphatation interne et externe
• Condition de livraison: +N (NBK) normalisé sous atmosphère contrôlée
• Contrôles qualité: essais par courant de Foucault (eddy current) pour chaque tube
• Propriétés mécaniques (exemples): E235 yield 235 MPa, tensile 340–480 MPa, elongation 25%
• Tolérances dimensionnelles détaillées selon plage d'OD (voir tableau ci-dessus)