Yuhong Group Co.,Ltd
| Thickness | SCH.5S- SCH.XXS |
| Application | chemical processing, petrochemical, oil and gas, food processing, |
| Standard | ASTM A358/ ASME SA358 |
| Packaging Details | Ply-wooden Case / Bundle with plastic Cap |
| Class | Class 1, 2, 3, 4, 5 |
| Payment Terms | L/C,T/T |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End |
| Product Name | Stainless Steel Welded Pipe |
| Material Grade | TP304H |
| OD | 1/4" to 32" or custom |
| High Light | ASTM A358 TP304H Stainless Steel EFW Pipe, ASTM A358 Stainless Steel Welded Pipe |
| Model Number | ASTM A358 TP304H Stainless Steel Welded Pipe |
| Brand Name | YUHONG |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Thickness | SCH.5S- SCH.XXS | Application | chemical processing, petrochemical, oil and gas, food processing, |
| Standard | ASTM A358/ ASME SA358 | Packaging Details | Ply-wooden Case / Bundle with plastic Cap |
| Class | Class 1, 2, 3, 4, 5 | Payment Terms | L/C,T/T |
| Length | Single Random, Double Random & Cut Length | End | Plain End, Beveled End |
| Product Name | Stainless Steel Welded Pipe | Material Grade | TP304H |
| OD | 1/4" to 32" or custom | High Light | ASTM A358 TP304H Stainless Steel EFW Pipe, ASTM A358 Stainless Steel Welded Pipe |
| Model Number | ASTM A358 TP304H Stainless Steel Welded Pipe | Brand Name | YUHONG |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | CHINA |
| High Light | ASTM A358 TP304H stainless steel pipe ，1.4948 EFW welded pipe ，stainless steel pipe for corrosive environment | ||
ASTM A358 TP304H / 1.4948 Stainless Steel EFW Pipe Double Welded Pipe
ASTM A358 TP304H EFW pipe is an electric-fusion-welded, high-carbon (0.04–0.10%) stainless steel pipe. Manufactured from plate, it is solution-annealed for enhanced creep-rupture strength above 550°C. Specified under Class 1 for 100% radiography, it is designed for high-temperature, pressure-retaining services like boiler headers and refinery transfer lines. Choose ASTM A358 over ASTM A312 for welded pipe because A358 is exclusively designed for large-diameter, heavy-wall fabrication from formed plates using double-sided submerged arc welding (SAW). It enforces strict radiographic examination classes (e.g., Class 1 = mandatory 100% RT) critical for verifying weld integrity under high-temperature creep conditions.
Equivalent Grade of ASTM A358 Grade 304H Stainless Steel Welded Pipe EFW Pipe
| Grade | UNS No | Old British | Euronorm | ||
| BS | En | No | Name | ||
| 304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 |
| These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted. | |||||
Chemical Composition % of ASTM A358 Grade 304H Stainless Steel Welded Pipe EFW Pipe
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304H | min. | 0.04 | - | - | -0.04 | - | 18.0 | - | 8.0 | - |
| max. | 0.10 | 2.0 | 0.75 | 0.030 | 20.0 | 10.5 | ||||
Mechanical Properties of ASTM A358 Grade 304H Stainless Steel Welded Pipe EFW Pipe
| 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 | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
| Note: 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
ASTM A358 offers different classes based on non-destructive testing requirements. For high-temperature, critical service, Class 1 is usually mandatory:
Class 1: Fully radiographed (100% RT) along the entire weld length.
Class 2: Spot radiographically examined.
Class 3: Not radiographically examined (hydrostatic test only).
For high-temperature/pressure boilers, Class 1 is strictly recommended.
Applications
Because of the robust welding method and high corrosion resistance, this pipe is used in demanding environments:
Chemical Processing: Handling acids, sulfates, and chlorides.
Petrochemical Refineries: High-temperature hydrocarbon service.
Food Processing: Where cleanliness and corrosion resistance are vital.
Water Treatment: Desalination plants and wastewater treatment (resists chloride corrosion).
Power Generation: Flue gas desulfurization (FGD) systems.
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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