Laboratory

Inspection connects the material, manufacturing process and delivered part with a documented acceptance plan.

Inspection methods and equipment

Metallography

Standard reference: GB/T 13298 / ASTM E3
Equipment: Inverted metallurgical microscope
Example acceptance reference: No visible pores / inclusions in the examined section

Tensile test

Standard reference: GB/T 228.1 / ASTM E8/E8M
Equipment: Universal testing machine
Example acceptance reference: Reference tensile strength ≥1050 MPa for the specified material condition

Penetrant examination (PT)

Standard reference: JB/T 9218 / ASME BPVC V
Equipment: Penetrant inspection system
Example acceptance reference: No linear indications; acceptance class confirmed in the inspection plan

Ultrasonic examination (UT)

Standard reference: ASME BPVC V
Equipment: Ultrasonic inspection system
Example acceptance reference: Proposal reference: no defect ≥Φ2 mm; technique and sensitivity agreed for the part

Dimensional inspection

Standard reference: ISO 10360
Equipment: Coordinate measuring machine
Example acceptance reference: ±0.02 mm

Hardness

Standard reference: ASTM E18
Equipment: Rockwell hardness tester
Example acceptance reference: HRC 32–38

Flow calibration

Standard reference: ISO 5167
Equipment: Flow calibration bench
Example acceptance reference: Deviation ≤±5%

Additional capabilities in the company profile include industrial CT scanning and 3D scanning for dimensional reconstruction. Test selection and acceptance limits follow the material, heat treatment, geometry and customer specification. The example strength and hardness values do not apply to every alloy.

For non-pressure-retaining wear parts: valve trim, seats and sealing surfaces. Pressure-retaining components require project-specific qualification before acceptance.