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Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 for Piping Systems

  • Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 for Piping Systems
  • Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 for Piping Systems
  • Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 for Piping Systems
  • Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 for Piping Systems
  • Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 for Piping Systems
Place of Origin Shanghai,China
Brand Name TOBO
Certification ISO/TUV/SGS
Model Number Stainless Steel Reducer
Minimum Order Quantity 1PC
Price Negotiable
Packaging Details Standard Shipping Package
Delivery Time 15-30 Workdays
Payment Terms T/T, Western Union
Supply Ability 10 Ton/Month
Product Details
Product Name Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 Main Standard ASTM, ANSI, DIN, GOST, BS, GB
Product Type Butt Weld Reducer Country Of Origin China
Outside Diameter 1/2 Package Wooden Case
Pressure Class 3000 Length 6 Meters Or Customized
Application Piping Systems For Fluid Flow Types Seamless
Certifications ISO 9001:2015, PED 2014/68/EU Type Reducer Flange For Wholesale
Sizerange 1/2 Inch To 48 Inches Shape ROUND
Ends Plain End, Beveled End, Threaded End Technics Casting
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Stainless Steel 304/316L Butt Welding Concentric Reducer

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ASME B16.9 Class 150 Butt Welding Concentric Reducer

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Concentric Reducer ASME B16.9
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Product Description

Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150
 
1. Product Description

 

Stainless steel reducers are strictly classified into two types based on centerline alignment. Incorrect selection directly impacts system safety:

  • Concentric Reducer (CR): Both ends share the same centerline with symmetrical diameter reduction. Suitable for vertical risers, pump discharge vertical sections, or gas transmission lines, where fluid transitions evenly along the center. Not recommended for horizontal liquid lines due to potential bottom pooling.

  • Eccentric Reducer (ER): Centerlines are parallel but offset, with one straight side (flat-bottom or flat-top installation). For horizontal liquid pipelines, flat-bottom installation (straight side down) is mandatory to prevent liquid accumulation and crevice corrosion. For horizontal gas pipelines, flat-top installation (straight side up) is required to prevent condensate pooling. This is the most critical engineering principle in reducer selection.


2. Product Applications

 

Industry Typical Media Recommended Material
Petrochemical Crude oil, refined products, sour gas 316L / Duplex 2205
Marine/Ocean Seawater, salt spray 904L / Super Duplex 2507
Food & Pharmaceutical Purified water, steam, CIP solutions 304L / 316L (mirror-polished)
Power Generation High-temp steam, feedwater 321H / 347H (stabilized grades)
Semiconductor High-purity gases, UPW 316L EP-grade (electropolished)

​3.Product Advantages

  • Solution Annealing: All forged/stamped products undergo solution annealing (1040～1120℃) followed by rapid water quenching, ensuring intergranular corrosion resistance and eliminating cold-work stresses.

  • Full-Loop Inspection Chain: Raw material verification → dimensional check → forming temperature monitoring → ultrasonic wall-thickness verification → bevel angle inspection → surface roughness sampling → hydrostatic/pneumatic testing.

  • NDT Coverage: 100% dye penetrant (PT) or magnetic particle (MT) inspection on weld ends; radiographic testing (RT) available upon request for pressure-retaining walls.

  • Full Traceability: Each fitting is stamped with heat number, size, and standard. Material test certificates are provided with each shipment, ensuring full lifecycle traceability.

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Stainless Steel 304/316L Butt Welding Concentric Reducer ASME B16.9 Class 150 for Piping Systems 0

4.Key Product Parameters
 

Ordering Item Technical Details
Product Name & Type Must specify "Concentric" or "Eccentric"; for Eccentric, indicate "Flat-Bottom" or "Flat-Top"
Material Grade + Heat No. Example: 316L / Heat No. 2203-XXX (with MTC attached)
Size (Large End × Small End) Example: DN200×DN100 (or 8″×4″)
Wall Thickness Schedule SCH40S / SCH80S, etc. (large and small ends can be specified separately)
Applicable Standard ASME B16.9 / GB/T 12459, etc. (must state edition/year)
End Connection Type Butt Weld (BW) / Socket Weld (SW) / Threaded (specify thread standard)
Surface Finish Requirement Pickled & passivated / Mechanically polished (Ra≤0.8μm) / Mirror polished (Ra≤0.4μm) / Electropolished
NDT Requirements PT / MT / RT / UT (specify sampling rate or 100%)
Packaging Method Wooden crates / Pallets / Steel banding, with plastic end caps on both ends
Marking Requirements Stamped (Material + Size + Standard + Heat No.) or laser-engraved; stainless steel tags attached
Accompanying Documents Material Test Certificate (EN 10204 3.1 or 3.2), Dimensional Inspection Report, Heat Treatment Report

 

 
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.

Tags:

Concentric Pipe Reducer

Pipe Reducer Fittings

Butt Weld Reducer