Turnstone provides ventilation equipment, specifically to mining, tunneling, and industrial temperature control markets, that promote industry leading safety and efficiency.

Turnstone Industrial Solutions

271 Gawthrop Drive

Winchester, KY 40391

P: 859-745-8720

A joint venture between ABC Technology Group USA and Calandra Group, LLC

HardLine-MAX™ (Round and Oval)

Semi-rigid polymer tubing for horizontal mine and tunnel ventilation.

 

FEATURES:

  • HardLine tubing can be formed to round or oval.

  • Oval is designed to maximize drift/tunnel headroom by 25%.

  • Resilient and durable polymer material (RigiFLEX-FR) is purpose-built for mine and tunnel ventilation.

  • Tubing offers industry-leading high-efficiency airflow and low-leakage coupling.

  • Available for positive and negative pressure applications.

  • Hi-visibility safety green color.

  • Quick-to-install coupling system.

  • Fire Resistant for mine safety and to meet local codes.

  • For shipping and storage HardLine Ducting is compressed down to help reduce cost.

 

SPECIFICATIONS:

Diameter Range: 14” – 72” (356mm – 1830mm)

Standard Length: 8’ and 10’ (2.45m, 3.05m). Longer lengths available.

 

MATERIAL:

  • RigiFLEX-FR Polymer Grades:

    • SD (Standard Duty) for light-weight and positive pressure applications.

    • MD (Medium Duty) for positive and moderate negative pressure applications

    • XD (Extreme Duty) for accessories, negative pressure and high-impact applications.

  • RigiFLEX-FR offers a consistent and smooth surface to maximize airflow efficiency.

  • Polymer does not fracture, de-laminate or lose bond.

  • Safe to handle as there are no fibers that fracture, cut or contaminate the air.

 

HardLine-MAX™ COAL

Semi-rigid polymer tubing for horizontal coal mine ventilation.

 

FEATURES:

  • Tubing offers industry-leading high-efficiency airflow and low-leakage coupling (without the wrapping of joints).

  • Tubing provides more air, consistently, reliably, farther, with smaller diameters.

  • Tubing efficiencies offer significantly reduced noise levels.

  • Hi-visibility safety green color.

  • Quick-to-install and long-lasting coupling system.

  • Safe to handle – no shards or exposed fiberglass that can cut and no glass particulate in the air. 

  • Fire Resistant for mine safety and to meet local codes.

 

SPECIFICATIONS:

Diameter Range: 16”, 20” and 24” (406, 508 and 610mm)

Standard Length:  10’ (3.05m).

 

MATERIAL:

  • RigiFLEX-FR Polymer Grades:

    • MD (Medium Duty)

    • XD (Extreme Duty)

  • RigiFLEX-FR offers a consistent and smooth surface to maximize airflow efficiency.

  • Polymer does not fracture, de-laminate or lose bond.

  • Safe to handle as there are no fibers that fracture, cut or contaminate the air.

HardLine-MAX™ Accessories

Semi-rigid polymer branch tube accessories for mine and tunnel ventilation.

 

FEATURES:

  • Fabricated from our thickest grade (XD) RigiFLEX-FR polymer material.

  • Accessories include fan adapters, transitions (from steel or fiberglass tubing, or to FlexLine), tees, smooth radius elbows, laterals, wyes, control dampers, reducers and more. 

  • Accessories offer industry-leading high-efficiency airflow and low-leakage coupling.

  • Available for positive and negative pressure applications.

  • Hi-visibility safety green color.

  • Quick-to-install coupling system.

  • Fire Resistant for mine safety and to meet local codes.

  • For shipping and storage HardLine Ducting is compressed down to help reduce cost.

 

SPECIFICATIONS:

Diameter Range: 14” – 72” (356mm – 1830mm)

Standard Length: 8’ and 10’ (2.45m, 3.05m). Longer lengths available.

 

MATERIAL:

  • Fabricated using XD (Extreme Duty) RigiFLEX-FR polymer material.

  • RigiFLEX-FR offers a consistent and smooth surface to maximize airflow efficiency.

  • Polymer does not fracture, de-laminate or lose bond.

  • Safe to handle as there are no fibers that fracture, cut or contaminate the air.