gretola unpainted in the hardened and tempered steel consisting of four flat bands associated costolate and four connectors for the implementation of safety railings

• 1. Seamless steel tube hardened and tempered, process to produce a seamless steel tube and steel hardened and tempered curved [P] . BR102014008354A2 . 2016-02-16

  机译： 无缝钢管淬火和回火，生产无缝钢管和淬火回火的钢的工艺

• 2. Pretreatment of small parts punched out from a steel belt, which, together with which they are still surrounding steel band radical hardened and are tempered [P] . 德国专利： DE721669C . 1942-06-16

  机译： 对从钢带上冲出的小零件进行预处理，并与它们一起仍然围绕着钢带进行自由基硬化和回火

• 3. Connector for joining replacement pipe to cut off ends of pipe - consists of pipe piece with sealing rings, and flat steel band pulling pipe piece [P] . 德国专利： DE4220294C1 . 1993-09-30

  机译： 连接替换管以切断管端的连接器-由带密封环的管件和扁平钢带拉管件组成

• 1. Steel Strip Hardening and Tempering Lines for Medium and High Carbon Steels and Alloyed Grades Part I: Production Lines with Liquid Metal Quenching [C] . H. Lochner International Federation for Heat Treatment and Surface Engineering Congress . 2006
• 2. Effect of Tempering Conditions on Secondary Hardening of Carbides and Retained Austenite in Spray-Formed M42 High-Speed Steel [O] . Bowen Liu, Tian Qin, Wei Xu, 2019
• 3. Precipitation hardening of tempered martensite lath structure in a 10Cr-3Co-3W-0.2Re steel upon creep at 650 °C [O] . Alexandra FEDOSEEVA, Ivan NIKITIN, Alexey FEDOSEEV, 2019
• 4. Tool Steel: Effect of Isothermal Hardening on Bend Strength of Tempered High Speed Steel [R] . Lement, B. S. 1945