Q370qDNH Q370qENH Q370qFNH weathering bridge steel

Q370qNH series materials include Q370qDNH, Q370qENH and Q370qFNH weathering bridge steel.

Z-direction performance steel includes: Q370qDNH-Z15, Q370qDNH-Z25, Q370qDNH-Z35, Q370qENH-Z15, Q370qENH-Z25, Q370qENH-Z35, Q370qFNH-Z15, Q370qFNH-Z25, Q370qFNH-Z35.

Q370qDNH, Q370qENH and Q370qFNH weathering bridge steel have significant weather resistance and are often used in bridge engineering.

The Q370qDNH, Q370qENH and Q370qFNH weathering bridge steel shall comply with the GB/T 714 standard, and the Z-direction performance shall comply with the GB/T 5313 standard.

Q370qDNH, Q370qENH and Q370qFNH weathering bridge steel are subject to normalizing, hot rolling, thermo mechanical rolling and other heat treatment processes.

Designation method of Q370qDNH, Q370qENH and Q370qFNH weathering bridge steel:
Q - capital letter of yield strength
370 - smaller yield strength value
Q - capital letter of bridge
D/E/F - quality grade of bridge steel, corresponding to - 20℃ impact, - 40℃ impact and - 60℃ impact respectively.

Q370qDNH, Q370qENH and Q370qFNH weathering bridge steel can be used for flame cutting rough machining or laser cutting finish machining.