At High Technology Nondestructive Testing Service Co., Ltd, we recognize that an NDT system is only as accurate as its calibration. We provide specialized engineering and precision machining services to produce high-quality Calibration Blocks, Reference Standards, and Mock-up Demonstration Blocks tailored to your specific project requirements.

Our Manufacturing Capabilities

1. Standard Calibration Blocks

We manufacture industry-standard blocks for daily equipment verification and sensitivity settings:

• Ultrasonic Testing (UT): IIW Type 1 & 2, V1, V2, Step Wedges, and DAC blocks.

• Advanced NDT: Phased Array (PAUT) and ToFD calibration blocks with specialized side-drilled holes (SDH) and EDM notches.

• Surface Testing: MT and PT test panels for verifying system sensitivity.

2. Custom Reference Standards

When standard blocks don’t match your project’s unique metallurgy or geometry, we design bespoke reference standards:

• Acoustically Matched Standards: Using surplus material from your actual project (piping, plate, or forgings) to ensure identical acoustic velocity and attenuation.

• Complex Geometries: Custom blocks for curved surfaces, nozzle-to-shell configurations, and heavy-wall weldments.

3. Demonstration & Performance Mock-ups

For high-stakes projects requiring Performance Demonstration (PD) or “Blind Testing,” we fabricate realistic mock-ups:

• Seeded Defects: Precision placement of “real” flaws such as lack of fusion, cracks, slag, and porosity within the weld volume.

• Audit Readiness: Providing the physical proof needed to validate your procedures during ASME, API, or ISO audits.

The HTNDT Precision Advantage

• EDM Micro-Machining: Utilizing Electrical Discharge Machining (EDM) to create ultra-precise notches and targets that traditional machining cannot achieve.

• Material Traceability: Every block we manufacture comes with a comprehensive Material Test Report (MTR) and a dimensional inspection certificate.

• Level III Consultation: Our NDT Level III experts review every design to ensure the block meets the technical requirements of the specific code (ASME, AWS, or ISO) you are following.

Why Choose Our Blocks?

• Accuracy: Tolerances are held to the highest industrial standards (+/- 0.05mm or better).

• Durability: Available in a wide range of materials, including Carbon Steel, Stainless Steel, Aluminum, Monel, and Duplex, with protective coatings to prevent corrosion.

• One-Stop Shop: We are one of the few companies that can design the NDT Procedure, build the Robotic Scanner, and manufacture the Calibration Block all in one facility.