TOBO STEEL GROUP CHINA
| Technology | Forged, |
| Corrosion Resistance | High |
| Supply Ability | 10Ton/Month |
| Chemical Composition | Ni MIn63%,Cu 28%-34%,Fe Max2.5% |
| Delivery Time | 15-30 Workdays |
| Stander | ANSI B16.9 |
| Cusomized Support | OEM, ODM, OBM |
| Wallthickness | Schedule 10 to Schedule 160 |
| Payment Terms | T/T,Western Union |
| Service | OEM Service |
| Packing | ply-wooden Case |
| Technical | cold rolled, cold drawn |
| Customized Support | OEM, ODM, OBM |
| Pipe Class | Not Rated |
| End Connections | Butt Weld |
| Pressure Rating | 150/300/600/900/1500/2500 PSI |
| Packaging Details | Standard Shipping Package |
| Product Type | Butt weld stub olet |
| Productname | Butt Weld Fittings |
| Model Number | Butt Welding Fitting |
| Brand Name | TOBO |
| Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China |
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Product Specification
| Technology | Forged, | Corrosion Resistance | High |
| Supply Ability | 10Ton/Month | Chemical Composition | Ni MIn63%,Cu 28%-34%,Fe Max2.5% |
| Delivery Time | 15-30 Workdays | Stander | ANSI B16.9 |
| Cusomized Support | OEM, ODM, OBM | Wallthickness | Schedule 10 to Schedule 160 |
| Payment Terms | T/T,Western Union | Service | OEM Service |
| Packing | ply-wooden Case | Technical | cold rolled, cold drawn |
| Customized Support | OEM, ODM, OBM | Pipe Class | Not Rated |
| End Connections | Butt Weld | Pressure Rating | 150/300/600/900/1500/2500 PSI |
| Packaging Details | Standard Shipping Package | Product Type | Butt weld stub olet |
| Productname | Butt Weld Fittings | Model Number | Butt Welding Fitting |
| Brand Name | TOBO | Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China | ||
| High Light | Butt-welding pipe fittings eccentric reducer ，Duplex stainless steel pipe fittings ，ASME B16.9 stainless steel reducer | ||
This product is a butt-welding eccentric reducer manufactured in accordance with ASTM A815 and ASME B16.9 standards. The material is UNS S32101 (LDX 2101 / EN 1.4162), a lean duplex stainless steel with a dual-phase microstructure of approximately 50% ferrite and 50% austenite. This 1" Schedule 10 fitting is designed for butt-weld connection in piping systems.
| Parameter | Details / Range |
|---|---|
| Design Standard | ASTM A815, ASME B16.9, MSS SP-43 |
| Material Grade | UNS S32101 (LDX 2101 / EN 1.4162) |
| Type | Eccentric Reducer |
| Nominal Size | 1" (DN25) |
| Wall Thickness | Schedule 10 |
| End Connection | Butt-weld ends (beveled for welding) |
| Tensile Strength (min) | 650–740 MPa |
| Yield Strength (min) | 450–500 MPa |
| Elongation (min) | 30–34% |
| Hardness (max) | 260–290 BHN / 27 HRC |
| Density | 7.7 g/cm³ |
| PREN Value | ~26–27 (Pitting Resistance Equivalent Number) |
| Chemical Comp. (Cr/Ni/Mo/N) | 21.0-22.0% / 1.35-1.70% / 0.10-0.80% / 0.20-0.25% |
| Length (H) – per B16.9 | ~50.8 mm (2.00 in) for 1" size |
This eccentric reducer is ideal for demanding environments:
Chemical Industry: Heat exchangers, tanks, and containers
Infrastructure: Bridges, sluice gates, structural components
Storage Tanks: Palm oil, wine, potable and sewage water, biodiesel, fruit juice
General Applications: Seawater systems, flue-gas cleaning, water heaters
Horizontal Piping: Eccentric design eliminates vapor pockets when installed with flat side up
Superior Strength: Yield strength (~500 MPa) is approximately double that of standard 304/316L, enabling thinner wall designs.
Excellent Corrosion Resistance: PREN value of ~26–27 provides resistance to pitting on par with standard austenitic grades.
Cost-Effective: Lower nickel content (1.35-1.70%) compared to 300-series austenitic steels offers significant material cost savings.
Vapor Pocket Elimination: Eccentric design with flat side up prevents air/gas accumulation in horizontal lines.
Good Weldability: High nitrogen content ensures fast austenite reformation during thermal cycling.
The eccentric reducer connects pipes of different diameters with an offset centerline (one flat side). This design is specifically used in horizontal piping to prevent vapor or gas pockets that could affect flow efficiency or damage pumps. It facilitates smooth transition from a larger bore to a smaller bore with one side remaining level.
Preparation: Clean pipe ends and reducer weld areas of contaminants (oil, dirt, rust).
Alignment: Accurately align the reducer with pipes. For horizontal lines, install with flat side up to eliminate vapor pockets.
Welding: Perform butt-welding following approved Welding Procedure Specification (WPS) with certified welders. Due to duplex material, strict heat input control is essential.
Post-Weld Treatment: Solution annealing at 1020-1100°C followed by rapid cooling is recommended to restore the duplex structure and corrosion resistance. Pickling/passivation advised.
Orientation: Eccentric reducers in horizontal piping must be installed with flat side up to prevent gas accumulation.
Ferrite Balance: Ensure proper welding procedure to maintain the 50/50 austenite-ferrite microstructure.
Temperature Limitation: Not recommended for use above 300°C or below -50°C. Maximum corrosion temperature: 430°C.
Annealing: Intermetallic phase formation is sluggish, but precipitation of nitrides/carbides at 600-800°C can affect material properties.
Standard delivery time is typically 15–30 days, subject to order quantity, specific sizes, and specification availability.
Common international payment methods include T/T (Telegraphic Transfer) and L/C at sight (Letter of Credit) .
Products are securely packed in non-fumigation plywood cases or wooden crates with internal cushioning to ensure safe transportation and prevent damage during transit.
All products undergo 100% strict quality inspection before shipment.
In case of quality issues, retain original packaging and provide relevant photos or third-party inspection reports.
Specific return, exchange, and warranty terms are subject to the final sales contract agreement.
FAQ
1. Are you trading company or manufacturer ?
We are manufacturer ,You can see the certification.
2. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
Company Details
Business Type:
Manufacturer,Agent,Importer,Exporter,Trading Company,Seller
Year Established:
1998
Total Annual:
100000-100000000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
TOBO GROUP sales head offce in Shanghai. We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ... TOBO GROUP sales head offce in Shanghai. We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ...
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