Yuhong Group Co.,Ltd
| Payment Terms | L/C, T/T |
| Delivery Time | 7 DAYS |
| Packaging Details | Ply Wooden Case , Bundle |
| Product Name | Stainless Steel Seamless Pipe |
| Standard | ASTM A312 , ASME SA312 |
| Material Grade | TP304 , 1.4301 , 08Х18Н10, SUS304 |
| NPS | 1/8" TO 24" or custom |
| Wall Thickness | Schedule 5S to Schedule XXS |
| Pipe End | Plain End, Beveled End |
| Surface | Solution, Pickled and annealed |
| High Light | ASTM A312 Stainless Steel Seamless Pipe, TP304 TP304N TP304LN Steel Pipe |
| Brand Name | YUHONG |
| Model Number | ASTM A312 TP304 Stainless Steel Seamless Pipe |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001, ISO 14001, ISO 18001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Delivery Time | 7 DAYS |
| Packaging Details | Ply Wooden Case , Bundle | Product Name | Stainless Steel Seamless Pipe |
| Standard | ASTM A312 , ASME SA312 | Material Grade | TP304 , 1.4301 , 08Х18Н10, SUS304 |
| NPS | 1/8" TO 24" or custom | Wall Thickness | Schedule 5S to Schedule XXS |
| Pipe End | Plain End, Beveled End | Surface | Solution, Pickled and annealed |
| High Light | ASTM A312 Stainless Steel Seamless Pipe, TP304 TP304N TP304LN Steel Pipe | Brand Name | YUHONG |
| Model Number | ASTM A312 TP304 Stainless Steel Seamless Pipe | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001, ISO 14001, ISO 18001 |
| Place of Origin | CHINA | ||
| High Light | ASTM A312 stainless steel seamless pipe ，ASME SA312 TP304 seamless pipe ，TP304LN stainless steel pipe with warranty | ||
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
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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