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| Categories | Seamless Steel Pipe |
|---|---|
| Brand Name: | GNEE |
| Model Number: | Seamless Steel Pipe |
| Certification: | ISO 9001 |
| Place of Origin: | Henan |
| MOQ: | 3 ton |
| Price: | Negotiable |
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability: | 2500 ton/tons per month |
| Delivery Time: | 5-8 work days |
| Packaging Details: | Standard Sea-worthy Packing |
| Special Pipe: | API Pipe |
| Thickness: | 5 - 16 mm |
| Tolerance: | ±1% |
| Certificate: | ISO9001 |
| Surface Treatment: | Hot Rolled |
| Outer Diameter: | 4.5 - 18 inch |
| Company Info. |
| Gnee Steel (tianjin) Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Astm A312 Tp304 Stainless Steel Seamless Pipe Iso 9001 Certificate
Seamless steel pipes might naturally be more durable and reliable because there is no seam, but that level of strength might not be needed for the project. One of the finer points of engineering is using the correct amount of materials without wasting more money than is necessary. Seamless steel pipes might then be necessary for machinery, as the stronger steel lasts longer and is less susceptible to failure.
Composition ranges for 304 grade stainless steel
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||
| 304L | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||
| 304H | min. | 0.04 | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.10 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | |||
Mechanical properties of 304 grade stainless steel
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
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