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High Precision Cold Drawn Steel Pipe / Cold Rolled Seamless Tube 6-520mm OD

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Description

High Precision Cold Drawn Steel Pipe / Cold Rolled Seamless Tube 6-520mm OD

Dimensions:

  • Outer Diameter (O.D): 6 mm – 426 mm
  • Wall Thickness: 0.5 mm – 40 mm
  • I.D and Tolerance (mm): H8 – H12
  • Straightness: 0 – 0.80 mm/meter
  • Minimum Order Quantity (MOQ): 1.0 – 3.0 tons

Inspection and Quality Control:

  • Inspection Types: Chemical analysis, Mechanical analysis, Straightness, Flattening test, Flaring test, Nondestructive electric test, Surface quality, and Dimension report
  • Packaging: Customized according to customer specifications
  • Third-party Inspection: Acceptable

Origin:

  • Place of Origin: Jiangsu/Hubei, China

Applications of High Precision Cold Drawn Steel Pipe

The High Precision Cold Drawn Steel Pipe / Cold Rolled Seamless Tube is widely utilized in various industries, including:

  • Automotive Industry: Ideal for applications requiring high accuracy, brightness, and cleanliness.
  • Oil and Gas Industry Equipment: Used in offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, and injection/ballast water systems.
  • Chemical Process Industries: Essential for heat exchangers, vessels, and piping in desalination plants and high-pressure RO plants.
  • Mechanical and Structural Components: Suitable for high-strength, corrosion-resistant parts.
  • Power Industry: Applications in FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping.

Quality Standards

Our seamless tubes meet the following quality standards:

  • DIN 2391: Seamless Precision Steel Tubes
  • EN 10305: Steel Tubes for Precision Applications (Seamless Cold Drawn Tubes)

Steel Grades Comparison

ASTM EN DIN JIS GB/T
1010 C10E CK30 S10C 10#
1020 C35E CK35 S20C 20#
1026 C45E CK45 S30C 30#
1030 E355 41Cr4 S35C 35#
1035 30CrMo4 34CrMo4 S45C 45#
1045 42CrMo4 1.7225 SCr420 25Mn
4130 SCM430 40Cr
4140 SCM440 27SiMn
4145 SACM645 30CrMo
52100 35CrMo
6150
8620

Chemical Composition (%)

Steel Grade C Si Mn P S Cr Mo Ni
1020 0.18-0.23 / 0.30-0.60 0.040 max 0.050 max / / /
1035 0.32-0.38 / 0.60-0.90 0.040 max 0.050 max / / /
1045 0.43-0.50 / 0.60-0.90 0.040 max 0.050 max / / /
ST52 0.22 max 0.55 max 1.60 max 0.035 max 0.040 max / / /
4130 0.28-0.33 0.15-0.35 0.40-0.60 0.035 max 0.040 max 0.80-1.10 0.15-0.25 /
4140 0.38-0.43 0.15-0.35 0.75-1.00 0.035 max 0.040 max 0.80-1.10 0.15-0.25 /
4340 0.38-0.43 0.15-0.35 0.15-0.35 0.035 max 0.040 max 0.70-0.90 0.20-0.30 1.65-2.00

Tolerances for O.D/I.D (mm)

O.D/I.D Range (mm) H8 H9 H10 H11 H12
3 < D ≤ 6 -0, +0.018 -0, +0.030 -0, +0.048 -0, +0.075 -0, +0.120
6 < D ≤ 10 -0, +0.022 -0, +0.036 -0, +0.058 -0, +0.090 -0, +0.150
10 < D ≤ 18 -0, +0.027 -0, +0.043 -0, +0.070 -0, +0.110 -0, +0.180
18 < D ≤ 30 -0, +0.033 -0, +0.052 -0, +0.084 -0, +0.130 -0, +0.210
30 < D ≤ 50 -0, +0.039 -0, +0.062 -0, +0.100 -0, +0.160 -0, +0.250
50 < D ≤ 80 -0, +0.046 -0, +0.074 -0, +0.120 -0, +0.190 -0, +0.300
80 < D ≤ 120 -0, +0.054 -0, +0.087 -0, +0.140 -0, +0.220 -0, +0.350
120 < D ≤ 180 -0, +0.063 -0, +0.100 -0, +0.160 -0, +0.250 -0, +0.400
180 < D ≤ 250 -0, +0.072 -0, +0.115 -0, +0.185 -0, +0.290 -0, +0.460
250 < D ≤ 315 -0, +0.081 -0, +0.130 -0, +0.210 -0, +0.320 -0, +0.520
315 < D ≤ 400 -0, +0.089 -0, +0.140 -0, +0.240 -0, +0.360 -0, +0.580
400 < D ≤ 500 -0, +0.097 -0, +0.155 -0, +0.280 -0, +0.400 -0, +0.640

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