A312 304/304L/304H Stainless Steel Pipes
Designed as per international and national standards, these stainless steel pipes are available in customized lengths, sizes and shapes to our esteemed clients. GNEE also offers the same services at the best prices in the market.
304/304L/304H stainless steel is T 300 series stainless steel austenitic. It is defined as chromium-nickel austenitic alloy and is the most adaptable and widely used stainless steel.
304/304L/304H stainless steel round pipes all have the following common features: high content of elements such as chromium and nickel, good corrosion resistance, stable performance in general environments, and can be used for electric welding, seamless pipes and various machinery In the processing technology, its mechanical properties and structural properties can be enhanced after heat treatment. The difference between them is that A312 TP304L low-temperature stainless steel pipe has lower carbon content and sulfur content and can adapt to lower temperature environments, while A312 TP304H high-strength stainless steel pipe has higher carbon content and sulfur content, which has higher hardness and strength.
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A312 TP 304 Stainless Steel Seamless Pipe SS Boiler Tube
| Outside Diameter | 12.7mm ~ 127mm |
| Wall Thickness | 0.5mm ~ 12.7mm |
| Length | Up to 25m |
| Standard | ASTM A106, A179, A192, A210, A213,A269, A333, A335, DIN17175, EN10216-2, JIS3461, etc. |
| Grade | TP304,TP304L,TP304H, TP316L,T5, T9, T11, T22, etc. |
| Delivery Condition | Pickled, Polished, Bright Annealed |
| Technique | Seamless/Welded |
| Application | Heat-exchanger, Heater, Boiler, Condenser Equipment |
| Marking | LOGO, Standard, Grade, Size, Heat Number. |
| Package | Woven bag, wooden case or as per customer's requirement. |
| Quality Requirement | Mill Test Certificate (EN 10204/3.1); Third Part Inspection is acceptable. |
A312 304/304L/304H pipes Chemical composition
| Grade | Ni | Mn | P | C | S | Si | Cr | Mo | N | |
| 304 | min. | 8.0 | – | – | – | – | – | 18.0 | – | – |
| max. | 10.5 | 2.0 | 0.045 | 0.08 | 0.030 | 0.75 | 20.0 | |||
| 304L | min. | 8.0 | – | – | – | – | – | 18.0 | – | – |
| max. | 12.0 | 2.0 | 0.045 | 0.030 | 0.030 | 0.75 | 20.0 | 0.10 | ||
| 304H | min. | 8.0 | – | – | 0.04 | – | – | 18.0 | – | – |
| max. | 10.5 | 2.0 | 0.045 | 0.10 | 0.030 | 0.75 | 20.0 | |||
A312 304/304L/304H Stainless Steel Pipes Mechanical Properties
| Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 40 | 205 | 92 | 201 |
| 304L | 485 | 40 | 170 | 92 | 201 |
| 304H | 515 | 40 | 205 | 92 | 201 |
A312 304/304L/304H Stainless steel Physical Properties
| Grade | Density (kg/m3) | Specific Heat 0-1000C (J/kg.K) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Electrical Resistivity (n.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 304 | 8000 | 500 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 720 |
| 304L | 8000 | 500 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 720 |
| 304H | 8000 | 500 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 720 |
A312 304/304L/304H stainless steel tubes
Why choose us
gnee has 14 steel production lines, 10 processing equipment for processing, bending, painting, heat treatment, cutting, drilling, beveling, tempering, surface treatment, complete testing equipment and strong technical force. The annual production capacity is more than 60,000 tons.
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FAQ
1. Steel pipes come in a wide range of shapes and sizes, with more choices.
2. Professional and experienced production staff provide excellent quality.
3. Strong production capacity to ensure fast delivery.
4. Mass production and raw material resources create good prices.
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