About

Beijing Double Dragon International Industrial & Mining Machinery Co., Ltd. is a steel silo supplier whose product range covers steel silos for agricultural, industrial, storage and environmental use, together with steel water tanks and silo equipment. The brand used across the product range is Bidragon, as the company's own product documentation presents it. This site presents the company as a supplier; no claim of factory ownership is made here.

The following company background is presented as the company's own published profile, and is attributed as such rather than stated as an independently verified fact. According to the company profile, the business began in 1996, starting from steel structure processing, installation, anti-corrosion and thermal insulation work, with a registered capital of RMB 10,180,000. According to the same profile, the company holds dual spiral equipment technology for the SM40 and SM30 machines, employs more than 20 professional design staff, and describes an annual steel silo contracting volume of 800,000 cubic metres and projects across 32 provinces and regions in China. Those figures are company-profile statements.

The company profile also describes, in its own terms, hardware including a manufacturing base area, production equipment and spiral seaming production lines. That description is a company-profile statement, and this site does not present it as an independently verified fact or as evidence of factory ownership. The supplier positioning used on this site reflects the frozen positioning for this company: supplier and trading presentation, without a claim of owning a factory.

The product range on this site is organised by use: agricultural silos, industrial silos, storage silos, environmental silos, steel water tanks and silo equipment. Each product page lists only the specifications that appear in the product documentation for that product, and project-specific values are confirmed through the inquiry form.

Certification

Certificates available upon request. The company profile describes a second-class professional contracting qualification for steel structures, issued by the national housing and construction authorities, but no certificate number or issuing document is published on this site, and no certificate number is stated. Design standard statements that appear on individual product pages, such as D-4097 or ASTM D-3299, are design standard statements for those products, not company certifications, and they are presented as such on the relevant pages.

Contact

Contact is provided through the inquiry form on this site. Contact details are not published here at present, pending confirmation of the correct contact information, and the inquiry form is the contact route provided.