Basic Info.
Standard
AISI, ASTM, DIN, JIS, GB
Composition
Alloy Steel or Carbon Steel
Surface Treatment
Slightly Oiled or Polishing
Special Use
High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel, Hydraulic Cylinder
Transport Package
Packing According to Customer′s Requirement
Specification
Customization of various specifications
Product Description
Product Description
Tube/Pipe Type: Cold drawn tube, Honed tube, Skived and Rolled Burnished tube, SRB tube, Precision tube and Cylinder barrel, Seamless Steel Pipe.
Standard:DIN2391, EN 10305, JIS G3445, ASTM A519, GB/T 8713…
Material:ST45, ST52, E355, E355SR, STKM13C, SAE 1026, 20#, Q235B, CK45…
Heat treatment:BK+S
Specification: Out diameter:20-800mm, Inner diameter: 40-250mm
I.D Tolerance: H7, H8, H9, H10, H11
Length:3-9m(Customers usually choose the 4-5.8m)
Straightness: 0.2-0.5mm/m
ID roughness: RA0.2-RA0.4(max)
Product Parameters
Steel Grade | Tensile strength σb N/mm2 | Strength of yield σsN/mm2 | Elongation δ% | Hardness HB |
20# | ≥520 | ≥470 | ≥12 | 175 |
CK45 | ≥600 | ≥520 | ≥12 | 207 |
ST52 | ≥600 | ≥520 | ≥15 | 190 |
25Mn | ≥600 | ≥510 | ≥15 | 195 |
27SiMn | ≥800 | ≥720 | 10 | 230 |