SW Concentric Swaged Nipple Monel 400 2" x 1.5" SCH 80 Class 3000# ASME B16.11

Product Specification

SW Concentric Swaged Nipple Monel 400 2" x 1.5" SCH 80 Class 3000# ASME B16.11

1. Product Description

This product is a Socket Welding (SW) Concentric Swaged Nipple manufactured from Monel 400 (UNS N04400) in accordance with ASME B16.11 and MSS SP-95 standards . A swaged nipple is a forged fitting used to connect two pipes of different diameters in a straight line, with the concentric type featuring aligned centerlines for smooth flow transition . Monel 400 is a nickel-copper solid solution alloy that cannot be hardened by heat treatment but can be strengthened through cold working . The socket weld (SW) connection type indicates the fitting is designed to be installed by inserting pipes into sockets and applying fillet welds, which is standard practice for small-bore, high-pressure piping systems .

2. Key Product Parameters

3. Application / Usage

This concentric swaged nipple is ideal for demanding environments requiring high strength and corrosion resistance :

• Oil & Gas: Offshore platforms, subsea piping, high-pressure process lines

• Chemical Processing: Acid and alkali handling systems, specialty chemicals

• Marine Engineering: Seawater piping systems, shipbuilding

• Power Generation: Heat exchangers, condenser piping

• Vertical Pipelines: Concentric design allows for smooth, gradual reduction while maintaining flow direction and minimizing turbulence, primarily used in vertical service 

4. Advantages

• Superior Corrosion Resistance: Exceptional resistance to seawater, acids, alkalis, and chloride-induced stress corrosion cracking 

• High Strength: Good mechanical properties maintained from cryogenic to elevated temperatures 

• Leak-Proof Socket Weld Joint: Provides high leak resistance and excellent performance on lines subject to vibration and thermal cycling 

• Cost-Effective: Lower cost than many higher nickel alloys while delivering excellent performance in critical service 

• Smooth Flow Transition: Concentric design with aligned centerlines enables uniform diameter reduction with reduced turbulence 

5. Functions

The concentric swaged nipple provides a permanent, pressure-rated transition between two pipes of different diameters within a piping system . It reduces the pipe diameter uniformly with the centerline of the large end aligning perfectly with the centerline of the small end . For the 2" x 1.5" Class 3000# configuration, it serves as a durable inline reducer for critical applications requiring welding.

6. Installation Instructions

1. Preparation: Clean pipe ends and socket interior thoroughly; remove all dirt, oil, and debris 

2. Expansion Gap: For socket welding, insert the pipe leaving a 1/16" (1.6 mm) gap between the pipe end and the socket bottom before welding 

3. Welding: Perform fillet weld around the joint using qualified WPS and certified welders 

4. Cleaning: Post-weld cleaning and inspection as per quality procedure

5. NDT: Visual and PT/MT examination recommended for fillet weld integrity

7. Precautions

• Expansion Gap: The 1/16" gap is mandatory to prevent thermal expansion cracking during service 

• Temperature Limitation: Maximum service temperature is 538°C (1000°F) - avoid operation above this range 

• Chemical Sensitivity: Due to high copper content, avoid use in nitric acid and ammonia systems where rapid attack can occur 

• Thread Compatibility: If ordered with threaded ends, ensure NPT, BSPT, or BSPP thread type is specified 

8. Shipping & Delivery

• Standard delivery time is typically 5–50 days, depending on order quantity and specification availability 

9. Payment Terms

• Common international payment methods include T/T (Telegraphic Transfer), L/C at sight (Letter of Credit), D/P, and Western Union 

10. Packaging

• Products are securely packed in plywood cases, wooden crates, woven bags, or cartons as per customer requirements 

11. After-Sales / Return & Warranty Policy

• All products undergo strict quality inspection before shipment, with Mill Test Certificates (EN 10204 3.1/3.2) available 

• 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.