Knowledge Centre

Technical Guides & Material Specifications

In-depth guidance on industrial packaging, roofing systems and geomembranes — material grades, load ratings, certifications and the real drivers behind cost. Written by the engineering team at Shish Industries for specifiers, buyers and project managers.

Written in-house, not outsourced Specification-level detail New guides added regularly

AAR Certified Dunnage Bags: Rail Freight Requirements

Shish Industries Limited

Published on: 12/10/2026

What AAR certification covers, why rail transport needs it, which routes require Pamphlet 6 compliance, and what to check on a supplier's certificate.

aar-certificationrail-freightcargo-securing