スチール製パイプ Cold Drawn Army Green Seamless Steel Pipe

炭素鋼製DINヨーロッパ規格

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 (summary)
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 vs 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 (max / min where shown)
E215 (1.0212): C 0.10; Si 0.05; Mn 0.7; P 0.025; S 0.015; Total 0.025
E235 (1.0308): C 0.17; Si 0.35; Mn 1.2; P 0.025; S 0.015
E355 (1.0580): C 0.22; Si 0.55; Mn 1.6; P 0.025; S 0.015

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

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

Caractéristiques / spécifications techniques

• Product type: Cold drawn seamless steel pipe with military green chromium-free VI passivation
• Applicable standards: EN10305-4, EN10305-1, ASTM A179, GB
• Material grades available: E215 / E235 / E355
• Outer diameter range: 4–120 mm
• Wall thickness range: 0.5–10 mm
• Standard fixed length: 6 m (customizable on request)
• Delivery condition: +N (NBK) normalized under controlled atmosphere
• Typical lead time: 15–45 days depending on quantity and stock
• Available processing services: welding, punching, cutting, bending, uncoiling