スチール製パイプ DIN 2391

ASTM規格に準拠DINヨーロッパ規格

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 and anti-rust performance
• Total phosphating: Phosphating applied to both inner and outer surfaces of the steel pipe
• Delicate: Phosphated coating is delicate, high lubricity, uniform color
• Exterior: Good appearance
• Painting: Suitable for painting; strong coloring ability for painting and plastic spraying

Manufacturing, Tests & Surface Treatment

• 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): During annealing, vacuum protection with injected gases preserves rolling accuracy and smoothness and yields excellent 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 painting/plastic-spraying coloration

Dimension
OD (mm) : Available wall thickness (examples list)
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)
E215 | 1.0212 | 0.10 | 0.05 | 0.7 | 0.025 | 0.015 | 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 allowable tolerance (GB/T3639 / DIN2391):
4mm-20mm : GB/T3639 ±0.10mm ; DIN2391 ±0.08mm ; Special tolerance OD ±0.05mm ; WT ±0.05mm
20mm-30mm : GB/T3639 ±0.10mm ; DIN2391 ±0.08mm ; Special tolerance OD ±0.08mm ; WT ±0.08mm
31mm-40mm : GB/T3639 ±0.15mm ; DIN2391 ±0.15mm ; Special tolerance OD ±0.10mm ; WT ±0.08mm
41mm-60mm : GB/T3639 ±0.20mm ; DIN2391 ±0.20mm ; Special tolerance OD ±0.15mm ; WT ±0.15mm
61mm-80mm : GB/T3639 ±0.30mm ; DIN2391 ±0.30mm ; Special tolerance OD ±0.20mm ; WT ±0.20mm
81mm-120mm : GB/T3639 ±0.45mm ; DIN2391 ±0.45mm ; Special tolerance OD ±0.30mm ; WT ±0.30mm

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

FAQ (selected neutral points)

• Samples: Samples can be provided; sample fee and shipping cost are required in advance and sample fee is refundable after order.
• Custom samples: Samples or technical drawings can be produced on request.
• Payment terms: For payments ≤ $1000, 100% prepayment. For payments ≥ $1000, 30% T/T in advance, balance before shipment.
• Delivery terms: EXW, FOB, CFR, CIF, DDU.

Caractéristiques / spécifications techniques

• Nom commercial / série : DIN 2391
• Normes : EN10305-4 (DIN2445/2), EN10305-1 (DIN2391), ASTM A179
• Aciers disponibles : E215, E235, E355 (ST35 / ST37.4 / ST52)
• Diamètres extérieurs (OD) : 4 – 120 mm
• Epaisseurs paroi (WT) : 0.5 – 10 mm (selon tableau de dimension)
• Longueur standard : 6 m fixes ou à la demande
• Traitement de surface : Phosphating (intérieur et extérieur)
• Etat de livraison : +N (NBK) normalisé sous atmosphère contrôlée
• Contrôles qualité : Eddy current testing (détection des défauts)