Tubo rigido in acciaio Cold Drawn Army Green Seamless Steel Pipe

in acciaio al carbonioDINa norma 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 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

Product Video / 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 6: 6*1, 6*1.5, 6*2
OD 8: 8*1, 8*1.5, 8*2
OD 10: 10*1, 10*1.5, 10*2
OD 12: 12*1, 12*1.5, 12*2, 12*2.5
OD 14: 14*1, 14*1.5, 14*2, 14*2.5, 14*3
OD 15: 15*1, 15*1.5, 15*2, 15*2.5, 15*3
OD 16: 16*1, 16*1.5, 16*2, 16*2.5, 16*3
OD 18: 18*1.5, 18*2, 18*2.5, 18*3, 18*3.5, 18*4
OD 20: 20*1.5, 20*2, 20*2.5, 20*3, 20*3.5, 20*4
OD 22: 22*1.5, 22*2, 22*2.5, 22*3, 22*3.5, 22*4
OD 25: 25*2, 25*2.5, 25*3, 25*3.5, 25*4
OD 28: 28*2, 28*2.5, 28*3, 28*3.5, 28*4
OD 30: 30*2, 30*2.5, 30*3, 30*3.5, 30*4, 30*4.5, 30*5
OD 32: 32*2, 32*2.5, 32*3, 32*3.5, 32*4, 32*4.5, 32*5
OD 34: 34*2, 34*2.5, 34*3, 34*3.5, 34*4, 34*4.5, 34*5, 34*6
OD 35: 35*2, 35*2.5, 35*3, 35*3.5, 35*4, 35*4.5, 35*5, 35*6
OD 38: 38*2, 38*2.5, 38*3, 38*3.5, 38*4, 38*4.5, 38*5, 38*6
OD 40: 40*2.5, 40*3, 40*3.5, 40*4, 40*4.5, 40*5, 40*6
OD 42: 42*2.5, 42*3, 42*3.5, 42*4, 42*4.5, 42*5, 42*6
OD 45: 45*2.5, 45*3, 45*3.5, 45*4, 45*4.5, 45*5, 45*6
OD 46: 46*2.5, 46*3, 46*3.5, 46*4, 46*4.5, 46*5, 46*6
OD 48: 48*2.5, 48*3, 48*3.5, 48*4, 48*4.5, 48*5, 48*6
OD 50: 50*2.5, 50*3, 50*3.5, 50*4, 50*4.5, 50*5, 50*6
OD 54: 54*3, 54*3.5, 54*4, 54*4.5, 54*5, 54*6
OD 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 4mm-20mm: Allowable tolerance GB/T3639 ±0.10mm; DIN2391 ±0.08mm; Special tolerance OD ±0.05mm; WT ±0.05mm
Outer Diameter 20mm-30mm: Allowable tolerance GB/T3639 ±0.10mm; DIN2391 ±0.08mm; Special tolerance OD ±0.08mm; WT ±0.08mm
Outer Diameter 31mm-40mm: Allowable tolerance GB/T3639 ±0.15mm; DIN2391 ±0.15mm; Special tolerance OD ±0.10mm; WT ±0.08mm
Outer Diameter 41mm-60mm: Allowable tolerance GB/T3639 ±0.20mm; DIN2391 ±0.20mm; Special tolerance OD ±0.15mm; WT ±0.15mm
Outer Diameter 61mm-80mm: Allowable tolerance GB/T3639 ±0.30mm; DIN2391 ±0.30mm; Special tolerance OD ±0.20mm; WT ±0.20mm
Outer Diameter 81mm-120mm: Allowable tolerance GB/T3639 ±0.45mm; DIN2391 ±0.45mm; Special tolerance OD ±0.30mm; WT ±0.30mm

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

Caractéristiques / spécifications techniques

• Produit: cold drawn seamless steel pipe with chromium-free VI passivation (military green)
• Normes applicables: EN10305-4, EN10305-1, ASTM A179, GB
• Aciers disponibles: E215, E235, E355 (correspondances ST35/ST37.4/ST52)
• Diamètres extérieurs: 4–120 mm
• Épaisseurs: 0.5–10 mm (selon tableau de dimensions)
• Longueur standard: 6 m fixe ou sur demande
• État de livraison: +N (NBK) normalisé sous atmosphère contrôlée
• Traitement de surface: passivation sans chrome VI (military green), anti-corrosion intérieur et extérieur
• Services d'usinage: soudage, poinçonnage, coupe, cintrage à froid, déroulage
• Contrôles: contrôle des dimensions, essais par courant de Foucault, essais mécaniques, traitement thermique NBK
• Tolérances dimensionnelles selon GB/T3639 et DIN2391 (détaillées ci-dessus)