Tubería rígida de acero Cold Drawn Army Green Seamless Steel Pipe

de acero al carbonoDINnorma Europea

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 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

Product Video / Workflow
Work flow chart:
Raw material → Inspection (chemical analysis, physical performance, sizes) → Cutting → Chamfer grinding (deburring) → Pickling → Saponification → 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 / Available thickness combinations (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
E215 (1.0212): C max 0.10, Si max 0.05, Mn max 0.7, P max 0.025, S max 0.015, Total min 0.025
E235 (1.0308): C max 0.17, Si max 0.35, Mn max 1.2, P max 0.025, S max 0.015
E355 (1.0580): C max 0.22, Si max 0.55, Mn max 1.6, P max 0.025, S max 0.015

Tolerance
Outer Diameter allowable tolerance / special tolerance (selected standards):
4mm-20mm: GB/T3639 ±0.10mm; DIN2391 ±0.08mm; OD ±0.05mm; WT ±0.05mm
20mm-30mm: GB/T3639 ±0.10mm; DIN2391 ±0.08mm; OD ±0.08mm; WT ±0.08mm
31mm-40mm: GB/T3639 ±0.15mm; DIN2391 ±0.15mm; OD ±0.10mm; WT ±0.08mm
41mm-60mm: GB/T3639 ±0.20mm; DIN2391 ±0.20mm; OD ±0.15mm; WT ±0.15mm
61mm-80mm: GB/T3639 ±0.30mm; DIN2391 ±0.30mm; OD ±0.20mm; WT ±0.20mm
81mm-120mm: GB/T3639 ±0.45mm; DIN2391 ±0.45mm; OD ±0.30mm; WT ±0.30mm

Mechanical Properties
E215 (1.0212): Yield strength (ReH) min 215 MPa; Tensile strength 290–430 MPa; Elongation A % = 30%
E235 (1.0308): Yield strength min 235 MPa; Tensile strength 340–480 MPa; Elongation A % = 25%
E355 (1.0580): Yield strength min 355 MPa; Tensile strength 490–630 MPa; Elongation A % = 22%

Caractéristiques / spécifications techniques

• Nom commercial: Cold Drawn Army Green Seamless Steel Pipe
• Normes prises en charge: EN10305-4, EN10305-1, ASTM A179, GB
• Grades d'acier: E215, E235, E355
• Diamètre extérieur (OD): 4–120 mm
• Épaisseur paroi (WT): 0.5–10 mm (exemples listés par OD ci‑dessus)
• Condition de livraison: +N (NBK) normalisé sous atmosphère contrôlée
• Traitement de surface: Passivation sans chrome VI (couleur militaire/olive green)
• Longueur standard: 6 m (ou sur demande)
• Services de transformation disponibles: soudage, poinçonnage, découpe, cintrage, déroulage
• Tests et contrôles: analyse chimique, tests de performance physique, contrôle dimensionnel, essais par courants de Foucault, traitement thermique NBK