<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31412176</termId><termName>corrugated steel</termName><termType>PT</termType><termNote><![CDATA[ Structural sheet of steel, shaped in alternating ridges and grooves; used as roofing, siding, and the like. ]]></termNote><termCreatedDate>2026-03-30 20:50:49</termCreatedDate><relation><relationType>UF</relationType><termId>31412177</termId><termName>steel, corrugated</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31375267</termId><termName>sheet metal</termName><termType>PT</termType></relation></term>  </Zthes>