Yuhong Group Co.,Ltd
| Payment Terms | T/T, L/C at sight |
| Supply Ability | 5000 PCS PER MONTH |
| Delivery Time | Depends on quantity |
| Packaging Details | PLY-WOODEN CASE OR PALLET |
| Product Name | Super duplex cap |
| Specification | ASTM A815/ASME SA815 |
| Material | S32750 / 1.4410 / SAF 2507 |
| Size | 1/2" – 48" (DN15 – DN1200) |
| Schedule | SCH 10 - XXS |
| Dimension Standard | ASME B16.9 |
| Surface | Pickled & Passivated |
| Applications | Oil & Gas / Offshore / Marine / Desalination |
| Brand Name | YUHONG |
| Model Number | ASTM A815 S32750 / SAF 2507 |
| Certification | API, PED, AD 2000, ISO 9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T, L/C at sight | Supply Ability | 5000 PCS PER MONTH |
| Delivery Time | Depends on quantity | Packaging Details | PLY-WOODEN CASE OR PALLET |
| Product Name | Super duplex cap | Specification | ASTM A815/ASME SA815 |
| Material | S32750 / 1.4410 / SAF 2507 | Size | 1/2" – 48" (DN15 – DN1200) |
| Schedule | SCH 10 - XXS | Dimension Standard | ASME B16.9 |
| Surface | Pickled & Passivated | Applications | Oil & Gas / Offshore / Marine / Desalination |
| Brand Name | YUHONG | Model Number | ASTM A815 S32750 / SAF 2507 |
| Certification | API, PED, AD 2000, ISO 9001 | Place of Origin | CHINA |
| High Light | Heat Exchangers Butt Weld Cap ，Super Duplex Steel Butt Weld Cap ，WP-S Steel Pipe Fittings | ||
ASTM A815 S32750 / SAF 2507 Cap, Super Duplex Butt Weld Pipe Fitting For Offshore Oil And Gas Platforms
Overwiew of ASTM A815 S32750 / SAF 2507 Cap
The ASTM A815 S32750 cap is a butt-weld fitting manufactured from super duplex stainless steel, designated as UNS S32750 or SAF 2507 (1.4410). Designed to seal pipe ends in high-pressure and highly corrosive environments, it offers exceptional mechanical strength and outstanding corrosion resistance.
With a PRE (pitting resistance equivalent) value exceeding 40, it provides superior resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in chloride-rich environments such as seawater and chemical processing applications. Manufactured in accordance with ASME B16.9 dimensional standards, the cap undergoes solution annealing treatment at 1025–1125°C followed by rapid cooling to maintain its optimal dual-phase microstructure (50% ferrite / 50% austenite).
This fitting is widely used in offshore platforms, seawater desalination plants, chemical processing, and oil & gas industries where reliability under extreme conditions is critical.
Chemical Composition of ASTM A815 S32750
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32750 |
0.030 max |
1.20max |
0.80 max |
0.035 max |
0.020 max | 24.0-26.0 | 3.00 - 5.00 | 6.00-8.00 | 0.24-0.32 | 58.095 min |
Mechanical Properties of ASTM A815 S32750 Cap
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
ASTM A815 S32750 Equivalent Grades
|
Standard/Region |
Equivalent Grade |
Remarks |
|---|---|---|
|
ASTM/UNS (USA) |
UNS S32750, ASTM A182 F53 |
Core equivalent, interchangeable |
|
EN/DIN (Europe) |
1.4410, X2CrNiMoN25-7-4 |
Most commonly used in Europe |
|
GB (China) |
S25073, 022Cr25Ni7Mo4N |
Chinese national standard |
|
Commercial Grade
|
SAF 2507 |
Universal commercial name |
Applications of ASTM A815 S32750 / SAF 2507 Cap
|
Industry
|
Specific Application Scenarios |
|
Oil & Gas
|
Offshore platforms, oil/gas gathering pipelines, acidic oilfields (with H2S), wellhead equipment
|
|
Marine/Offshore
|
Marine engineering, ship pipelines, offshore wind power, seawater pipelines
|
|
Desalination
|
Seawater desalination plants, high-chloride water treatment pipelines
|
|
Chemical Industry
|
Chemical processing, corrosive medium pipelines, acid-base storage and transportation systems
|
|
Other
|
Nuclear power, papermaking, high-pressure corrosive pipelines
|
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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