 |
| उत्पत्ति के प्लेस: | चीन |
| ब्रांड नाम: | YUHONG |
| प्रमाणन: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001, ISO 14001, ISO 18001 |
| मॉडल संख्या: | ASTM A312 TP304 स्टेनलेस स्टील सीमलेस पाइप |
| न्यूनतम आदेश मात्रा: | 500 किलोग्राम |
|---|---|
| पैकेजिंग विवरण: | प्लाई वुडन केस, बंडल |
| प्रसव के समय: | 7 दिन |
| भुगतान शर्तें: | एल/सी, टी/टी |
| प्रोडक्ट का नाम: | स्टेनलेस स्टील सीमलेस पाइप | मानक: | एएसटीएम ए312, एएसएमई एसए312 |
|---|---|---|---|
| सामग्री ग्रेड: | TP304 , 1.4301 , 08Х18Н10, SUS304 | एनपीएस: | 1/8" से 24" या कस्टम |
| दीवार की मोटाई: | XXS शेड्यूल करने के लिए अनुसूची 5S | पाइप एंड: | सादा अंत, बेवेल्ड अंत |
| सतह: | घोल, अचार बनाया हुआ और एनील्ड किया हुआ | ||
| प्रमुखता देना: | ASTM A312 stainless steel seamless pipe,ASME SA312 TP304 seamless pipe,TP304LN stainless steel pipe with warranty |
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ASTM A312 TP304 / 1.4301 / 06Cr19Ni10 Stainless Steel Seamless Pipe Cold Drawn Pipe
Corrosion & Heat Resistance of ASTM A312 TP304, TP304N, TP304LN Stainless Steel Seamless Pipe
General corrosion: All three are equivalent in most non-chloride environments (food, organics, oxidizing acids).
Sensitization risk (weld heat affected zone):
TP304 – susceptible (carbide precipitation 425–870°C)
TP304N – same as 304
TP304LN – resistant (low carbon)
Chloride pitting/crevice: All have same PREN ≈ 18-19 – not recommended for seawater or high-chloride hot water.
Oxidation resistance: Good up to 870°C intermittent, 925°C continuous (same for all).
| ASTM Grade | UNS | EN | GB/T | JIS |
|---|---|---|---|---|
| TP304 | S30400 | 1.4301 (X5CrNi18-10) | 06Cr19Ni10 | SUS304 |
| TP304N | S30451 | 1.4315 (X5CrNiN19-9) | 06Cr19Ni10N | SUS304N1 |
| TP304LN | S30453 | 1.4311 (X2CrNiN18-10) | 022Cr19Ni10N | SUS304LN |
| SS | Ni | Fe | Cr | C | Si | Mn | P | S | N |
| 304 | 8 – 11 | Balance | 18 – 20 | 0.08 max | 0.75 max | 2 max | 0.040 max | 0.030 max | |
| 304N | 8 – 11 | Balance | 18 – 20 | 0.08 max | 0.75 max | 2 max | 0.040 max | 0.030 max | 0.10 – 0.16 |
| 304LN | 8 – 11 | Balance | 18 – 20 | 0.035 max | 0.75 max | 2 max | 0.040 max | 0.030 max | 0.10 – 0.16 |
Comparative Advantages & Limitations of ASTM A312 TP304, TP304N, TP304LN Stainless Steel Seamless Pipe
| Grade | Strengths | Weaknesses / Best Use |
|---|---|---|
| TP304 | Good general corrosion resistance, excellent formability, widely available | Lower strength; sensitization possible if welded heavy sections without post-weld anneal |
| TP304N | Higher yield and tensile strength (≈15–20% increase) than 304; useful for pressure rating or lighter walls | Not for severe corrosive service after welding (same C as 304) – still sensitizes |
| TP304LN | Combines low carbon (no sensitization, weldable in thick sections) + N for added strength; best of both worlds | Slightly higher cost than 304/304L; less common stock |
TP304 (standard)
General chemical piping (low chloride)
Food, dairy, brewery
Heat exchangers (moderate temp)
Sanitary tubing
TP304N
High-pressure gas/liquid lines where higher strength allows thinner wall (cost saving)
Pressure vessels (ASME Section VIII)
Piping systems requiring reduced weight (offshore topside, platform piping)
Where 304 strength is insufficient but 316 not needed
TP304LN
Welded structures / heavy-wall pipe where post-weld heat treatment is impractical
Nuclear secondary systems (low carbon + N gives good properties and weldability)
Cryogenic service (austenite stable, good toughness)
High-temperature service requiring long-term aging resistance
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