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Carbon Steel Round Pipe In China
Brand Name:ZNGL
Place of Origin:China
Section Shape:Round
Special Pipe:API Pipe, Other, EMT Pipe, Thick Wall Pipe
Outer Diameter:20 - 620 mm
Thickness:1.0-58mm, 2 - 60mm
Standard:ASTM AISI GB JIS EN DIN
Length:12M, 6m, 6.4M, Customers' Requestments
Carbon steel round pipe is made of steel ingot or solid round steel through perforation to make capillary pipe, and then made by hot rolling, cold rolling or cold drawing. The main implementation standards of carbon steel round pipes include national standard, American standard, Japanese standard and so on. Carbon steel round pipes are mainly divided into: seamless steel pipes for structure, seamless steel pipes for conveying fluids, seamless steel pipes for low and medium pressure boilers, seamless steel pipes for high pressure boilers, and seamless steel pipes for petroleumcracking.
| 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 |
Uses of carbon steel round pipes: 1. Pipes for mechanical industry. Such as aerospace structural pipes (round pipes, oval pipes, flat oval pipes), automotive half-axis pipes, axle pipes, and automotive tractor structural pipes.
