1
Seamless
Cold Drawn
Carbon Steel
Oiled
Hydraulic/Automobile Pipe, Machinery Industry, Mining, Construction & Decoration
Round
St52; Ck20; Ck45; E355
GB/T 3639-2009, DIN 2391, En 10305, GB/T8713-88
25-500
-5%/+5%
Gano
in Bundles, Both Ends Plastic Caps
ID from 25-500mm
Jiangyin, China
Product Description
Product Description
Product description
Delivery Condition:
Bore Treatment: Honed, Skived & Rolled burnished
End Finish: Plain ends with square cuts, free of burrs for honed tubes.
Standard Export Packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags.
Product Processing
Quality Control
Outer diameter: 25mm -500mm
Wall thickness: 2-50mm
Material: ST52, Q345B, CK20, CK45, SAE1026
Standard: GB/T8713-88, GB/T3639-2009, DIN2391, EN10305
Honed tubes can be produced according to the demands of costumers that the degree of precision can reach H8/H9. Burnishing and honing service can be provided depending on the roughness requirement of inner diameter.
Material & Chemical Composition
DIN2391 standard ST52, EN10305 standard E355, 16Mn, ASTM A106B, C20/20#, CK45
| Material | C | Si | Mn | S(≤) | P(≤) | Cr | Ni | Mo | other |
| A106B / C20# | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | ≤0.25 | ≤0.30 | Cu≤0.25 | |
| CK45# | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | ≤0.25 | ≤0.30 | Cu≤0.25 | |
| Q345B | ≤0.20 | ≤0.55 | 1.00-1.60 | 0.040 | 0.040 | V:0.02-0.15 | Nb:0.015-0.06 | Ti:0.02-0.20 | Alt≥0.015 |
| ST52 E355 16Mn | ≤0.20 | ≤0.55 | 1.00-1.60 | 0.045 | 0.045 | V:0.02-0.15 | Nb:0.015-0.06 | Ti:0.02-0.20 | 16Mn |
| 25Mn | 0.22-0.30 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | ≤0.25 | ≤0.25 | ||
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.030 | 0.030 | ||||
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.025 | 0.025 | 0.90-1.20 | 0.15-0.25 |
Product description
| Processing Form | I. D | Length | Straightness | I. D Tolerance | I. D Rounghness |
| Cold-rolled | 30-100 | ≤ 12M | 0.3-1.0 | H8-H10 | 0.4-1.6 |
| Cold-drawn | 30-250 | ≤ 12M | 0.3-1.0 | 0.8-1.6 | |
| Hone | 40-500 | ≤ 12M | 1000 | H8-H9 | 0.4-0.8 |
| SRB | 40-400 | ≤ 7M | 1000 | H8-H9 | 0.1-0.4 |
Delivery Condition:
| BK | BKW | BKS | GBK | NBK | Q+T |
| +C | +LC | +SR | +A | +N | |
| Cold rolled | Cold drawn | Stress relieved | Annealed | Normalized | Quenched+Tempered |
Bore Treatment: Honed, Skived & Rolled burnished
End Finish: Plain ends with square cuts, free of burrs for honed tubes.
Standard Export Packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags.
Product Processing
Quality Control
