Zinc steel stair railing technology: solderless connection, anyway interspersed assembled. Compared with the traditional iron fence, install more efficient, more beautiful appearance. 2, zinc steel balcony railing of the substrate composed of six layers, namely: (1) steel layer (Base steel): substrate hardness value 159DPN; (2) zinc steel alloy layer (Zeta layer): the closest base alloy layer a layer of dense material, the structure is complicated, strong corrosion resistance, and to FeZn7 FeZn13 compounds exist, hardness values ??211DPN, containing Fe 7% -11%; (3) sub-layer of lead (Delta layer): significant columnar organization of the monoclinic system, Fe content of 6%, non-toxic, corrosion resistance, hardness value 179DPN; (4) pure zinc layer (Eta layer): dense hexagonal, texturing easy to break, the purity of 98.5% zinc, hardness value 70DPN; (5) high zinc phosphate layer: a good corrosion resistance and enhanced adhesion coating and the substrate; (6) Akzo - Nobel color temperature curing from molecular layer: excellent corrosion resistance and anti-impact performance, with excellent resistance to UV, anti-oxidation and surface self-cleaning properties, color change rate does not exceed 5% for 15 years. I produced zinc steel stair railing is widely used in industrial and mining enterprises, institutions, municipalities, parks, apartments and villas, community, schools and other places. National product marketing, won praise users. "High quality technology first, honest and trustworthy" has always been our company's business objectives, equality and mutual benefit, a total of cause is our idea of ??cooperation with all the friends! Zinc steel balcony rails zinc steel balcony railing _ Changsha Changsha best manufacturers _ zinc steel fence company _ Changsha, Hunan Shunyi Shunyi Trade Co., Ltd. [] Business Enterprise zinc steel industry: iron, rails, steel, building materials, decoration materials, hardware, electronics, electronic products, such as production, sales and installation. Mainly engaged in the balcony railings, stair railings, shutters, air conditioning railings, windows and railings, fences and electric retractable doors and IC card parking management system, smart card systems and other products, contact 0731-85866288. Company Name: Hunan Shunyi Trading Co. Tel: 0731-85866288 national free hotline: 400-8006227 Mobile: 18673165888 Contact: Sun Gazetteer QQ: 1750344532 E-mail: 1750344532@qq.com Website: http: //www.hnsyxg.com Website : http: //www.bdty168.cn Address: Shaoshan Road, Yuhua District No. 259 international commercial chanson North Building, Unit 12005