136TW Rail
Product Overview
136TW Rail is a thick-web transport rail section designed for heavy transport and special switch/turnout applications (asymmetric / thick-web profiles). Supplied with engineer-verified profile drawings (PDF/DXF) and Material Test Certificates (MTC); turnkey processing (cut-to-length, drilling, HT/head hardening, NDT) reduces procurement risk and speeds installation.
Key Features
Attribute | Details |
Profile Name | 136TW Rail 177.05 lb/yd |
Standard | AREMA (American Railway Engineering and Maintenance – of – Way Association) |
Dimensional Breakdown | – Height (H): 185.74mm |
Mass | 87.83 kg/m |
Typical applications
Switch points and stock rails for heavy turnouts and crossovers.
Heavy industrial and port trackwork requiring robust web for increased stiffness.
Custom special sections where asymmetric or thick web detail is required (e.g., composite wing rail assemblies).
Engineering & procurement
Specialty rail for turnouts: 136TW is typically a thick-web / asymmetric transport profile used in switch components (e.g., long-point stock rails and wing rails). Do not assume interchangeability with standard symmetric heavy-rail profiles — verify geometry.
CAD overlay is essential: overlay the supplier DXF against your existing profile to verify head radii, web thickness, and mating surfaces for frogs/points/wing rails before acceptance. We offer an engineer-signed overlay report. Welding & HT: if rails are heat-treated or head-hardened, declare this in the RFQ — welding procedures and post-weld testing must account for HT status.
Jointing & tooling: thicker webs and larger section areas may require different joint bars, bolt patterns, lifting gear and grinding tooling — confirm accessories and handling equipment compatibility.
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Faqs
Q :Where is 136TW used?
A — Often used for turnout/heart (frog) components, long-point stock rails and heavy transport rails that need extra section area/stiffness.
Q : Can I substitute 136TW for 136RE?
A —Not without engineering approval — 136TW is a thick-web / asymmetric special profile and differs significantly from standard 136RE sections. Perform a CAD overlay and joint/clip check first.