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Carbon Steel Round Pipe Wholesale
Brand Name:ZNGL
Place of Origin:China
Tolerance:±5%, ±1%
Processing Service:Welding, Punching, Cutting, Bending, Decoiling
Oiled or Non-oiled:Non-oiled
Invoicing:by theoretical weight
Delivery Time: 7-30 days
Hot-rolled carbon steel pipes can be divided into seamless steel pipes, straight seam steel pipes, spiral steel pipes, and high-frequency welded steel pipes. The hot-rolled carbon steel pipe is made of round pipe as raw material, and the pipe embryo is cut into about 1 meter long wool by cutting machine, and sent to the heating furnace for heating on the conveyor belt. The hot-rolled carbon steel pipes are also fed into the furnace and heated at about 1200 degrees Celsius.
| Grade Comparison | |
| GB | NM300,NM360,NM400,NM450,NM500 |
| SS | HARDNESS400, HARDNESS450, HARDNESS500, HARDNESS600 |
| DIN | XAR400, XAR450, XAR500, XAR600, Dillidur400, Dillidur500 |
| NBN | QUARD400, QUARD450, QUARD500 |
| NF | FORA400, FORA500, Creusabro4800, Creusabro8000 |
| JIS | JFE-EH360 , JFE - EH400 , JFE - EH500 , WEL-HARD400 , WELHARD500 |
| SFS | RAEX400, RAEX450, RAEX500 |
| Grade | |||||
| Chemical Composition ( ≤ ) | NM300 | NM360 | NM400 | NM450 | NM500 |
| C | 0.23 | 0.25 | 0.3 | 0.35 | 0.38 |
| Si | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| Mn | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 |
| P | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 |
| S | 0.015 | 0.015 | 0.01 | 0.01 | 0.01 |
| Cr | 0.8 | 1.1 | |||
| Ni | 0.5 | 0.5 | 0.7 | 0.8 | 1 |
| Mo | 0.4 | 0.5 | 0.5 | 0.55 | 0.65 |
| Thickness (mm) | ≤80 | ≤80 | ≤80 | ≤80 | ≤70 |
| Tensile strength (MPa) | ≥1000 | ≥1100 | ≥1200 | ≥1250 | -- |
| Elongation A (%) | ≥14 | ≥12 | ≥10 | ≥7 | -- |
| Surface Brinell hardness (HBW) | 270-330 | 330-390 | 370-430 | 420-480 | ≥470 |
Hot-rolled carbon steel pipe can be used to describe various metal tubular items. The main alloying element of hot-rolled carbon steel pipe is 0.12%-2% carbon. Carbon elements other than chromium, cobalt, molybdenum, nickel, niobium, titanium, tungsten, vanadium and zirconium can be added to obtain respective alloying effects.
