Seamless Steel Tubes

Product Name

Seamless Steel Tubes for Machinery Parts with Customizable Specifications (1018 & 1026 Mechanical Tubing)

Model Series

GH-MT-1018/1026 Series

Product Overview

Gilan Hardware Private supplies high-quality cold drawn and cold rolled seamless steel tubes engineered for precision machinery parts and mechanical structures. Manufactured with strict dimensional control and superior surface finish, our GH-MT series tubes (including AISI 1018 and 1026 equivalents) are designed to reduce secondary machining time, conserve raw materials, and enhance the reliability of finished components. These tubes are ideal for applications requiring tight tolerances, high straightness, and excellent roundness in automotive, hydraulic, and industrial equipment sectors.

Key Technical Parameters

Materials

• Carbon Steel: 10#, 20#, 45#, AISI 1018, AISI 1026, SAE 1010–1045, ST35, ST45, ST52, Q195–Q345

  
  

• Alloy Options: 16Mn, 30CrMo, 40Cr, 42CrMo (upon request)

  
  

Dimensional Range

• Outer Diameter (OD): 15 mm – 75 mm (up to 120 mm customizable)

  
  

• Wall Thickness (WT): 1 mm – 20 mm

  
  

• Length: Up to 12 meters (cut-to-length available)

  
  

Dimensional Tolerance (Typical)

• OD ≤ 20 mm: ±0.08 mm (Special ±0.05 mm)

  
  

• OD 21–40 mm: ±0.15 mm (Special ±0.10 mm)

  
  

• ID Tolerance: H8 – H9 (achievable via honing/skiving)

  
  

• Straightness: ≤ 0.3 mm / 1000 mm

  
  

Surface Condition

• Bright (cold rolled/drawn, oiled), Black annealed

  
  

• Surface Roughness: Ra ≤ 0.4 – 1.6 μm (precision finishes available)

  
  

Delivery Condition

• BK (+C), BKW (+LC), BKS (+SR), GBK (+A), NBK (+N)

  
  

Standards

• ASTM A519, DIN 2391, EN 10305-1, GB/T 3639, JIS G3445

  
  

Product Advantages

• High Precision: Tight OD/ID/wall thickness tolerances minimize machining allowance and material waste.

  
  

• Enhanced Strength: Cold working induces plastic deformation, improving yield point and fatigue resistance.

  
  

• Superior Surface: Bright, smooth bore and exterior reduce friction, improve sealing performance, and extend component life.

  
  

• Full Customization: Custom sizes, lengths, heat treatment (annealing, normalizing, stress relieving), and surface protection (oiled, phosphated) per drawing or sample.

  
  

Typical Applications

• Automotive & Motorcycle: transmission shafts, steering columns, shock absorber bushings, hollow axles

  
  

• Hydraulic & Pneumatic: cylinder barrels, piston sleeves, valve bodies

  
  

• Industrial Machinery: bearing housings, guide sleeves, printing/textile machine components

  
  

• General Engineering: structural tubular parts, precision annular components

  
  

Commercial & Quality

• Certifications: IATF 16949, ISO 9001:2015, ISO 14001, ISO 45001

  
  

• MOQ: 10 Tons (negotiable for trial orders)

  
  

• Lead Time: 20–30 working days

  
  

• Packaging: Woven bundling, wooden crates, VCI anti-rust paper, customized export packing

  
  

• Capacity: 50,000 Ton/Year