Menu
304 Ground Finished Machined Bars refer to bars made from stainless steel grade 304 that have undergone a machining process to achieve precise dimensions and a smooth surface finish. The term “ground finished” indicates that the bars have been mechanically ground to remove imperfections and achieve tight tolerances.
These bars are commonly used in industries requiring high precision and a polished surface, such as machinery, automotive components, and construction. The machining process ensures that the bars meet specific dimensional requirements and exhibit excellent surface quality, making them suitable for various applications.
Ratna Export’s ground bars are known for their exceptional straightness, minimal out-of-roundness, and smooth surface finish. These qualities are crucial for seamless and efficient production processes, especially in high-speed machining operations and precise feeds in automated lathes. Straightness is vital, particularly when working with long bars, ensuring consistent and accurate components
Rough ground bar | Fine ground bar, standard execution | Fine ground bar, special execution | |
Size range | Ø 12 to 100 mm | Ø 12 to 100 mm | Ø 12 to 100 mm |
Tolerances | ≥ IT9 | IT8 | Down to IT6 |
Lengths | 4 to 7 m | 4 to 7 m | 4 to 7 m |
Surface smoothness | Max. Ra 5 µm | Ra 1.0 µm | Down to Ra 0.6 µm |
Out OF roundness | Max. 50 % of the diameter tolerance, measured as the difference in diameter | Max. 50 % of the diameter tolerance, measured as the difference in diameter | Max. 50 % of the diameter tolerance, measured as the difference in diameter |
Straightness | 0.5 mm/m | Down to 0.2 mm/m | Down to 0.1 mm/m |
Dia – mm | ISO h6 | ISO h7 | ISO h8 | ISO h9 | ISO h10 | ISO h11 |
1 < 3 | 0.006 | 0.010 | 0.014 | 0.025 | 0.040 | 0.060 |
3 < 6 | 0.008 | 0.012 | 0.018 | 0.030 | 0.048 | 0.075 |
6 < 10 | 0.009 | 0.015 | 0.022 | 0.036 | 0.058 | 0.090 |
10 < 18 | 0.011 | 0.018 | 0.027 | 0.043 | 0.070 | 0.110 |
18 < 30 | 0.013 | 0.021 | 0.033 | 0.052 | 0.084 | 0.130 |
30 < 50 | 0.016 | 0.025 | 0.039 | 0.062 | 0.100 | 0.160 |
50 < 80 | 0.019 | 0.030 | 0.046 | 0.074 | 0.120 | 0.190 |
80 < 120 | 0.022 | 0.035 | 0.054 | 0.087 | 0.140 | 0.220 |
120 < 180 | – | – | 0.063 | 0.100 | 0.160 | 0.250 |
180 < 250 | – | – | 0.072 | 0.115 | 0.185 | 0.290 |
250 < 275 | – | – | 0.081 | 0.130 | 0.210 | 0.320 |
Dia – inches | ISO h6 | ISO h7 | ISO h8 | ISO h9 | ISO h10 | ISO h11 |
0.039 < 0.118 | 0.00025 | 0.0004 | 0.0006 | 0.0010 | 0.0016 | 0.0024 |
0.118 < 0.236 | 0.0003 | 0.0005 | 0.0007 | 0.0012 | 0.0019 | 0.0030 |
0.236 < 0.393 | 0.0004 | 0.0006 | 0.0009 | 0.0014 | 0.0023 | 0.0035 |
0.393 < 0.707 | 0.0004 | 0.0007 | 0.0010 | 0.0016 | 0.0028 | 0.0043 |
0.707 < 1.181 | 0.0005 | 0.0008 | 0.0012 | 0.0020 | 0.0035 | 0.0051 |
1.181 < 1.969 | 0.0006 | 0.0010 | 0.0016 | 0.0025 | 0.0040 | 0.0063 |
1.969 < 3.150 | 0.0007 | 0.0012 | 0.0018 | 0.0030 | 0.0046 | 0.0075 |
3.150 < 4.724 | 0.0009 | 0.0014 | 0.0022 | 0.0035 | 0.0055 | 0.0087 |
4.724 < 7.087 | – | – | 0.0025 | 0.0039 | 0.0063 | 0.0098 |
7.087 < 9.843 | – | – | 0.0028 | 0.0045 | 0.0073 | 0.0114 |
9.843 <10.827 | – | – | 0.0031 | 0.0051 | 0.0083 | 0.0126 |
Please note this is an approx Stainless Steel 304 Ground Finished Machined Bars price in India. For final 304 SS Ground Finished Machined Bars price list please mail us.
We understand the importance of packaging, especially in the case of international shipments, as the consignment has to go through some channels to reach the final destination; thus, we take proper care of packing.
Depending on the product, we pack our goods in different ways. We pack our products in the following ways:
The test certificates we supply will align with all the product marking details.
When ordering cut pieces of Pipes, Sheets, or Round Bars, our mark is transferred from the product from which it is cut. In such cases, we provide a letter confirming the marking transfer and a photo of the product from which it is cut.
Quick Contact
Our Products