BH Bar Stock Weld-in Thermowell

The welded mounting delivers excellent sealing and structural strength. Integrally CNC drilled without welded joints, it operates reliably under extreme conditions for critical measurement points in petrochemical and power sectors.

Technical data

Referenced Standard: ASME PTC 19.3 TW Forming Process: Machined from solid bar stock with integrally formed deep blind hole
Thermowell Material: CS, 304, 316L, 310S, alloy steel, etc. Thermowell OD: Φ16–Φ60 mm (Customized upon request.)
Insertion Length: Customized upon request. Connection Type: Butt welding, socket welding

Features & Benefits

Superior Sealing Integrity

The welded connection removes leakage hazards and provides high safety, suitable for severe high-risk scenarios with high-temperature high-pressure steam, flammable, explosive and toxic media requiring strict sealing.

High Flow Velocity Resistance

The integrally machined bar stock structure without weld seams offers high mechanical strength. Compared with threaded or flanged types, the weld-in design shortens cantilever length and greatly improves resistance to high-velocity flow impact for stable long-term service in steam piping and other high-flow environments.

Well-matched Material Selection

Available with low-alloy steels (F11, F22, F91, F92) and austenitic stainless steels (304, 316, 321). These grades balance weldability and impact resistance, and can be matched to pipe material to guarantee weld quality and long-term stable operation.

Strict Quality Assurance

Every unit undergoes X-ray radiographic, hydrostatic and leak tests prior to shipment. Strength and vortex resonance frequency are calculated per ASME PTC 19.3 TW at the order stage to match site operating conditions.

Applications

Petrochemical Industry & Coal Chemical Industry

Petrochemical Industry & Coal Chemical Industry

Used primarily in petrochemical and coal chemical applications where high-velocity and high-risk media are present, particularly high-velocity measurement points on high-temperature and high-pressure steam lines, syngas outlet lines, etc. The welded connection maintains leak-tight operation, protecting temperature measurement in high-risk media safely and reliably.

Thermal Power Generation

Thermal Power Generation

Used widely for temperature measurement protection in high-velocity, high-pressure steam lines such as four main steam piping systems (main steam, reheat steam, high-pressure feedwater, etc.) of thermal power plant boilers. The weld-in structure shortens cantilever length and improves impact resistance, suiting high-velocity, high-parameter operating conditions of power plant steam lines.