Cold Drawn Army Green Seamless Steel Pipe

Product Description

Standard: EN10305-4(DIN2445/2) , EN10305-1( DIN2391/C) , 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 requirement

Surface treatment: Chrome VI-free passivated (army green)

Delivery condition: +N (NBK) normalized under controlled atmosphere

Delivery time: 15-45 days according to the quantity you need and if the goods in stock

Product Advantages

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    No oxide layer

    No oxide layer on both sides of tube

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    Surface

    High precision, smooth surface

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    No crack

    No crack during flaring and flattening

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    Anti-rust

    Anti-rust on inside and outside

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    Cold bending

    Cold bending without deformation

Product Video

Work flow chart

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(m m)
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
10*1 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 C

max.

Si

max.

Mn

max.

P

max.

S

max.

Altot

min.

Name Number
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 Allowable tolerance special tolerance
GB/T3639 DIN2391 OD WT
4mm-20mm ±0.10mm ±0.08mm ±0.05mm ±0.05mm
20mm-30mm ±0.10mm ±0.08mm ±0.08mm ±0.08mm
31mm-40mm ±0.15mm ±0.15mm ±0.10mm ±0.08mm
41mm-60mm ±0.20mm ±0.20mm ±0.15mm ±0.15mm
61mm-80mm ±0.30mm ±0.30mm ±0.20mm ±0.20mm
81mm-120mm ±0.45mm ±0.45mm ±0.30mm ±0.30mm
Mechanical Properties
Steel grade Yield strengtha Tensile strength Elongation
Name Number ReH Rm A
min. min. min.
MPa MPa %
E215 1.0212 215 290 to 430 30
E235 1.0308 235 340 to 480 25
E355 1.0580 355 490 to 630 22

Application

For Heavy Truck

SAE J524 precision seamless steel tubes are widely used in various heavy trucks and special vehicles. Army green passivated precision steel pipes are specially used for heavy trucks, and the passivation treatment on the inner and outer walls greatly enhances their ability to prevent rust and corrosion.

For Construction Machinery

DIN 2391 precision hydraulic steel pipes are widely used in the chassis hydraulic and air piping systems of various construction machinery. Its advantages include no oxide layer on the inner and outer walls, no leakage under high pressure, high precision, no deformation during cold bending, no cracks when expanding or flattening.

For Agricultural Machinery

EN-10305 precision seamless steel tubes are widely used in various agricultural machinery. Its excellent physical characteristics and anti-rust ability meet the conditions of agricultural field work.