Tools & Hardware Pipe Fittings

Carbon Steel Buttwelding Reducer A234 WPB-WX, Pipe Fittings For Piping Systems In Chemical Plants

Price Negotiable
Price: NEGITABLE
MOQ: 1PC
Delivery Time: Depends on quantity
Brand: YUHONG GROUP
Product Description

Carbon Steel Buttwelding Reducer A234 WPB-WX, Pipe Fittings For Piping Systems In Chemical Plants

 

 

Overview of A234 WPB-WX Reducer

 

A234 WPB-WX Reducer is a precision-engineered pipe fitting designed to connect two pipes of different diameters in a high-integrity, permanent piping system. Its specification ensures it meets rigorous standards for material quality, performance, and safety.

 

 

Here is a breakdown of its key aspects:

1. Function and Purpose

  • Primary Function: To transition fluid flow between two pipes of different diameters while maintaining a smooth, welded connection.
  • Key Benefits:
    • Reduces Pressure Drop: A smooth internal bore minimizes turbulence and energy loss compared to mechanical alternatives.
    • High Strength: The welded joint becomes as strong as the pipe itself.
    • Leak-proof: Eliminates potential leak points associated with threaded or flanged joints.
    • Durability: Suitable for long-term service under demanding conditions.

2. Material & Specification (ASTM A234 WPB)

  • Standard: ASTM A234 is the overarching standard for "Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High-Temperature Service."
  • Grade: WPB is the most common grade for carbon steel fittings.
    • Chemistry: It has a controlled chemical composition (e.g., Carbon, Manganese, Silicon, Sulfur, Phosphorus) to ensure weldability and strength.
    • Mechanical Properties: It must meet minimum requirements for tensile strength and yield strength.
    • Temperature Range: Typically used for service temperatures between -20°F (-29°C) and 850°F (454°C). Usage outside this range requires careful evaluation.

3. The "WX" Supplementary Requirement

This is a critical differentiator. While "WPB" defines the base material, "WX" specifies an enhanced level of quality control.

  • Interpretation: "WX" is not a universal ASTM code; its meaning is defined by the manufacturer or the customer's purchase order.
  • Most Common Meaning: It almost always signifies that the fittings have undergone Charpy V-Notch (CVN) Impact Testing.
    • Purpose: Impact testing measures the material's toughness and resistance to brittle fracture at specified temperatures.
    • Implication: WX fittings are qualified for use in low-temperature environments or applications where sudden shock loading is a concern (e.g., cryogenic service, offshore platforms, or regions with cold climates). The exact test temperature (e.g., -50°F / -46°C) would be specified in the purchase documents.

4. Manufacturing and Design

  • Type: Buttwelding (BW). The ends are bevelled to match the pipe preparation for a full-penetration weld.
  • Styles:
    • Concentric Reducer: Symmetrical, with a common centerline. Used in vertical pipes or where fluid stratification is not an issue.
    • Eccentric Reducer: Asymmetrical, with one flat side. Used in horizontal pipelines to avoid trapping air (if flat on top) or to allow complete drainage (if flat on bottom).
  • Dimensions: Governed by standards like ASME B16.9, which specifies the precise outside diameters, wall thicknesses, and lengths for each size combination.

 

Chemical Composition (%) of ASTM A234 WPB

 

 

Grade C Mn P S Si Cr Mo Ni Cu V Nb
WPB 0.3 0.29-1.06 0.05 0.058 0.1min 0.4 0.15 0.4 0.4 0.08 0.02

 

Mechanical properties of ASTM A234 WPB

 

Tensile Requirements WPB WPC
Tensile Strength, min, ksi[MPa] 60-85 [415-585] 70-95 [485-655]
Yield Strength, min, ksi[MPa] 32 [240] 40 [275]


 

Application of A234 WPB-WX Reducer

  • Power generation plants
  • Oil and gas refineries
  • Chemical processing plants
  • High-pressure steam lines
  • Any industrial piping system requiring a reliable, permanent welded connection between pipes of different sizes.

 

 

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Yuhong Group Co.,Ltd
Location 20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact Person Jikin Cai

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