Tuyau rigide en acier Cold Drawn Army Green Seamless Steel Pipe

en acier au carboneDINnorme européenne

Product Description
Product Name: Cold Drawn Army Green Seamless Steel Pipe
Standard: EN10305-4 (DIN2445/2), EN10305-1 (DIN2391/C), ASTM A179, GB
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: chromium-free VI passivation (military green)
Delivery condition: +N (NBK) normalized under controlled atmosphere
Delivery time: 15-45 days, according to the quantity and stock status
Processing services: welding, punching, cutting, bending, uncoiling

Product Advantages

• No oxide layer on both sides of tube
• High precision, smooth surface
• No crack during flaring and flattening
• Anti-rust on inside and outside
• Cold bending without deformation

Work Flow / Production Process

• Raw material –> Inspection (chemical analysis, physical performance, sizes)
• Cutting –> Chamfer grinding (deburring) –> Pickling –> Saponifiation
• Cold drawn / cold rolled –> Straightening –> Cleaning (Oil removal)
• Eddy current testing –> Anaerobic bright heat treatment (NBK)
• Straightening –> Dimensional accuracy and surface testing
• Eddy current testing –> Physical performance test –> Surface treatment (Chrome VI-free passivated)
• Cleaning and packaging –> Stock

Dimension
OD | Thickness (mm)
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
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
Outer Diameter ranges and tolerances (Allowable tolerance / Special tolerance):
4mm-20mm | Allowable OD ±0.10mm ; DIN2391 WT ±0.08mm ; Special OD ±0.05mm ; Special WT ±0.05mm
20mm-30mm | Allowable OD ±0.10mm ; DIN2391 WT ±0.08mm ; Special OD ±0.08mm ; Special WT ±0.08mm
31mm-40mm | Allowable OD ±0.15mm ; DIN2391 WT ±0.15mm ; Special OD ±0.10mm ; Special WT ±0.08mm
41mm-60mm | Allowable OD ±0.20mm ; DIN2391 WT ±0.20mm ; Special OD ±0.15mm ; Special WT ±0.15mm
61mm-80mm | Allowable OD ±0.30mm ; DIN2391 WT ±0.30mm ; Special OD ±0.20mm ; Special WT ±0.20mm
81mm-120mm | Allowable OD ±0.45mm ; DIN2391 WT ±0.45mm ; Special OD ±0.30mm ; Special WT ±0.30mm

Mechanical Properties
Steel grade | Number | Yield strength ReH (MPa) min. | Tensile strength Rm (MPa) | Elongation A (%)
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%

Caractéristiques / spécifications techniques

• Nom commercial: Cold Drawn Army Green Seamless Steel Pipe
• Normes applicables: EN10305-4, EN10305-1, ASTM A179, GB
• Aciers disponibles: E215, E235, E355 (équivalents ST35 / ST37.4 / ST52)
• Plage de dimensions: diamètre extérieur 4–120 mm ; épaisseur 0.5–10 mm
• Longueur standard: 6 m (ou sur demande)
• Traitement de surface: passivation sans chrome VI (teinte militaire/vert)
• Condition de livraison: +N (NBK), normalisé en atmosphère contrôlée
• Services disponibles: soudage, poinçonnage, coupe, cintrage, déroulage
• Contrôles qualité en production: analyse chimique, essais physiques, essai courant de Foucault (eddy current), tests dimensionnels et de surface
• Tolérances dimensionnelles détaillées selon GB/T3639 et DIN2391 (voir tableau ci-dessus)
• Propriétés mécaniques minimales et composition chimique par nuance (voir tableaux ci-dessus)