Post Weld Heat Treatment

Accessories & Products

Building on this capability, AK NDT & Industrial Supplies offers a range of heat treatment equipment, including portable heat treatment machines, ceramic pad heaters, temperature controllers, thermocouples, and insulation materials. Our solutions are essential for post weld heat treatment (PWHT), stress relieving, preheating, and controlled heating applications, meeting industry requirements in sectors like oil & gas, power plants, and heavy fabrication. With precise temperature control and uniform heat distribution, our systems ensure compliance with ASME and industry heat treatment standards.

Ceramic Pad Heaters

Flexible ceramic pad heaters for PWHT made with nickel-chromium heating elements and ceramic beads, providing uniform heat distribution for preheating and post weld heat treatment on pipes and weld joints.

Thermocouples (Wire K-type)

High-accuracy thermocouples with fiberglass-insulated wire (up to 800°C) used for precise temperature measurement and control during PWHT cycles.

Thermocouple Attachment Unit

Reliable thermocouple attachment units (AC/DC powered) designed to securely fix sensors to components for accurate temperature monitoring in heat treatment processes.

Compensating Cable

Durable compensating cables for thermocouples ensuring accurate signal transmission from sensor to controller without temperature loss or error.

Triple Cable Set

Heavy-duty PWHT cable sets (output, neutral, compensation cables) with heat/oil/fire-resistant insulation for safe power distribution in heat treatment operations.

Splitter Cable (3-Way / 4-Way)

Efficient splitter cables for PWHT systems used to distribute power across multiple ceramic heating pads for uniform heating coverage.

Camlock Connectors & Accessories

High-current camlock connectors (male/female, panel mounted) made from brass with heat-resistant sleeves for secure electrical connections in PWHT setups.

Nichrome Heating Wire

High-performance nichrome (NiCr) heating wire used in ceramic pad heaters for consistent resistance heating and long service life.

Beads (Ceramic Beads)

Durable ceramic beads for PWHT heaters designed to insulate and support heating wires, ensuring efficient heat transfer and high-temperature resistance.

Thermocouple Plugs, Sockets & Panel Connectors

Reliable thermocouple connectors and sockets for secure and accurate temperature signal connections in PWHT control systems.

Chart Paper / Chart Roll / Z-Fold Paper

High-quality temperature recording chart paper used in PWHT recorders to maintain accurate heat treatment logs and compliance documentation.

Ribbon (Recorder Ink Ribbon)

Durable recorder ribbons for PWHT chart recorders ensuring clear and continuous temperature recording during heat treatment cycles.

Equipments & Products

For advanced applications, we deliver portable heat treatment systems and automated temperature control units that enable accurate monitoring, data recording, and efficient thermal processing. Our industrial heat treatment solutions are designed for both on-site and workshop use, ensuring flexibility and performance in demanding environments. Whether you require on-site PWHT services or complete heat treatment setups, AK NDT ensures safe, efficient, and consistent results for your critical components

Low Voltage (Resistance Heating Unit)

Robust low voltage PWHT machines with PID control panels for precise preheat and post weld heat treatment, ensuring controlled heating cycles and uniform temperature distribution.

High Voltage (Control Panels)

Advanced high voltage PWHT control panels with multi-zone output and manual/PID modes for accurate stress relieving and large-scale heat treatment applications.