NOV® Tuboscope® Thru-Kote® sleeve and fitting systems allow for continuous coating throughout a pipeline by isolating the internal coating from the welding process.

These products can be used in both onshore and offshore applications and constructed to accommodate any size, grade or configuration of piping system. The sleeves and fittings are compatible with Tube-Kote® liquid or powder coatings, which are chosen based on operating environment specifics.

Problem Solvers

During the welding process, heat generated within the pipe will burn back the internal plastic coating approximately 1-2 inches from the welding seam. Thru-Kote sleeves and fittings are designed to isolate the burn-back of the coating and protect the steel substrate. Other benefits include:

• Backing ring and heat tape to reduce excessive temperatures
• Holiday-free connection area
• X-ray compatible with API and ASME
• Fast and flexible method of field construction

Thru-Kote Configurations

• Thru-Kote U.B™ sleeve is an unbelled connection system designed to protect internal coatings during welding
• Thru-Kote is a belled connection system allowing for a non-restricted I.D
• Thru-Kote insert fittings are fabricated for multiple configurations that aid in modifications or repairs: tie-ins, terminations, flanges and elbows