優れた耐食性と耐久性を持った構造で、トンネル内の監査路など施設設備にとって過酷な環境下でも長寿命化を実現するハンドレールです。

Excellent corrosion resistance and durability

Compared to conventional hot-dip galvanized steel pipe (our product), it is extremely excellent in red rust resistance. Also, the durability of the weld repair part is excellent.

• 塩水噴霧試験（SST:JIS Z 2371）による赤錆発生時間（無処理）

• Survey results of red rust occurrence

[Salt spray test (JIS Z 2371) corrosion resistance test result]

[Japan Weathering Test Center]

・ ZAM ® The bead-cut surface of the welded part of the steel pipe is provided with special thermal spray training, so high corrosion resistance is maintained throughout the steel pipe.

・ ZAM ® The bead on the inner surface of the steel pipe is also protected from corrosion by the sacrificial corrosion protection and the dense zinc-based protective coating containing Al and Mg.

Excellent scratch resistance

ZAM ® Compared to other hot-dip galvanized steel sheets, copper sheets, and hot-dip zinc-aluminum alloy-plated copper sheets, the plating layer is dense and strong, so it is hard to be scratched and keeps its beautiful appearance. It can also be applied to applications that suffer from flaws and repeated friction during processing.

• Scratch resistance of various plated steel sheets (scratch test)

環境に優しい鋼管

《High corrosion resistance can be obtained with a small amount of plating》 《Long life can be achieved》

（Zn/Al/Mg合金めっき JIS G 3323）

(ZAM ® Is the highest grade plating developed by Nisshin Steel. )