Along with the years of entrepreneurial journey of Zhongyuan people, she gradually formed her own spiritual pillar and behavioral norms. In the silent inheritance, she guided Zhongyuan Company towards a more brilliant tomorrow.
ISO 2037 Stainless steel tubes for the food industry
ISO 1461 Metallic coatings-hot dip galvanized coatings on fabricated ferrous products-requirements
ISO 1460 Metallic coatings-hot dip galvanized coatings on ferrous materials-gravimetric determination of the mass per unit area
ISO 1459 Metallic coatings-protection against corrosion by hot dip galvanizing-guiding principles
ISO 1129 Steel tubes for boilers,superheaters and heat exchangers -dimensions,tolerances and conventional masses per unit length
ISO 1127 Stainless steel tubes -dimensions,tolerances and conventional masses per unit length
ISO 657-21 Hot rolled steel sections-T-sections with equal depth and flange width -dimensions
ISO 657-19 Hot rolled steel sections-bulb flats (metric series)-dimensions,sectional properties and tolerances
ISO 657-16 Hot rolled steel sections-sloping flange column sections (metric series)-dimensions and sectional properties
ISO 657-15 Hot rolled steel sections-sloping flange beam sections(Metric series)-dimensions and sectional properties
ISO 657-13 Hot rolled steel sections-tolerances on sloping flange beam,column and channel sections
ISO 657-11 Hot rolled steel sections-sloping flange channel sections(Metric series)-dimensions and sectional properties
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