Product Details

Product Description (Professional & Detailed)

The Flexible Transparent Angular Weld Test Vacuum Box is a high-performance inspection tool engineered for conducting vacuum leak testing on butt welds located on curved, rounded, and cylindrical surfaces. Designed for pipeline fabricators, industrial weld inspectors, and QA/QC departments, this vacuum box provides a reliable, fast, and non-destructive method for detecting welding discontinuities such as pinholes, porosity, undercut leaks, and incomplete fusion.

Constructed from a durable, transparent inspection panel, the vacuum box offers exceptional visibility of the weld seam during testing. The optical clarity ensures inspectors can easily view bubble formation when using soap or leak-detection solutions. Its transparent design greatly enhances safety and accuracy compared with opaque vacuum boxes.

The flexible angular frame is the core feature of this model, enabling the box to adapt smoothly to curved and cylindrical surfaces such as pipes, tanks, pressure vessels, storage cylinders, and rounded fabrications. The design eliminates air pockets, ensures uniform gasket compression, and enables precise vacuum formation across uneven or radius-based surfaces.

Equipped with a high-quality industrial sealing gasket, the unit maintains excellent vacuum retention even on surfaces with minor irregularities. The gasket material is resistant to wear, tear, oil, moisture, and chemicals typically found in fabrication shops and field environments.

The integrated vacuum fittings are manufactured for durability and leak-free performance, ensuring a consistent negative pressure environment for accurate testing. The vacuum box is compatible with standard vacuum pumps and testing setups, making it easy to integrate into existing inspection equipment.

Lightweight yet robust, this vacuum box is designed for rigorous daily use, both indoors and in harsh outdoor conditions. It is ideal for weld inspection during pipeline construction, tank manufacturing, pressure vessel fabrication, and general industrial welding operations.

Overall, the Flexible Transparent Angular Weld Test Vacuum Box provides a dependable, efficient, and user-friendly solution for leak detection in curved or cylindrical butt welds—helping ensure weld integrity, improve safety, and support compliance with industry testing standards.

 Technical Specifications

1. General Specifications

• Product Type: Flexible Transparent Angular Weld Test Vacuum Box

• Application: Vacuum leak testing of butt welds on curved, rounded, and cylindrical surfaces

• Inspection Method: NDT – Vacuum Leak Test (Soap Solution / Leak Detection Fluid)

• Surface Compatibility: Pipes, tanks, pressure vessels, curved plates, cylinders, radiused structures

2. Construction & Materials

Transparent Viewing Window

• Material: High-impact clear polycarbonate or acrylic

• Thickness: 6–12 mm (depending on model)

• Visibility: Optical-grade transparency for bubble detection

• Resistance: Impact-resistant, UV-resistant, corrosion-resistant

Flexible Angular Frame

• Material: Reinforced flexible polymer or rubber composite

• Flexibility Range: Conforms to various radiuses (pipe sizes from approx. 6" and above depending on model)

• Shape: Angular profile engineered to maintain structural integrity while bending

Sealing Gasket

• Material: Oil-resistant neoprene / NBR / EPDM (model-specific)

• Hardness: 40–60 Shore A

• Seal Width: 15–25 mm

• Temperature Resistance: –20°C to +90°C

• Chemical Resistance: Suitable for water-based solutions, oils, mild acids/alkalis

3. Vacuum System Components

Vacuum Port / Fittings

• Material: Brass / Stainless Steel (depending on model)

• Connection Type: Standard threaded vacuum connection

• Compatibility: Works with common industrial vacuum pumps

Operating Vacuum Range

• Typical Vacuum Level: –3 to –7 psi (depending on pump and test requirements)

• Pressure Monitoring: Optional gauge connection supported

Leak Detection Method

• Type: Bubble formation using approved soap or leak detection solution

4. Dimensions & Weight

(Values can be adjusted based on your exact model size — I can customize these.)

• Testing Area Length: 300–600 mm

• Viewing Window Width: 80–150 mm

• Overall Height: 70–120 mm

• Flexible Frame Thickness: 6–10 mm

• Estimated Weight: 1.5–3.5 kg

5. Operating Conditions

• Operating Temperature: –10°C to +70°C

• Environmental Suitability: Indoor / outdoor industrial environments

• Surface Requirements: Clean, relatively smooth curved surfaces

6. Performance Characteristics

• Conformity: Engineered for curved and cylindrical weld seams

• Vacuum Integrity: Maintains stable negative pressure through uniform gasket compression

• Inspection Visibility: 100% clear viewing window for full weld monitoring

• Durability: Resistant to vibration, handling stress, and fabrication shop conditions

• Testing Standard Compatibility: Suitable for vacuum box testing per various NDT/QA practices

7. Safety & Compliance

• Non-destructive testing method (NDT)

• No electrical components

• Non-reactive gasket materials

• Meets general industry welding inspection requirements

8. Included Components

• Flexible Transparent Angular Weld Test Vacuum Box

• Vacuum hose connection port

• Industrial-grade sealing gasket

• Optional pressure/vacuum gauge connection

• User instructions

9. Optional Customizations

• Custom sizes based on pipe diameter

• Custom gasket hardness/material

• Dual or multi-port vacuum connections

• Color-coded or branded viewing windows

• Reinforced window for high-impact applications