Batch galvanizing means hanging plating or sputtering steel parts such as transmission towers, highway guardrails, light poles, sign posts, etc; conventional continuous galvanizing galvanizing, also known as galvanized steel, galvanized steel, steel wire, etc. , q345d channel, batch-dip galvanized zinc plating long time without blowing wipe coating, zinc layer is thicker galvanized channel manufacturers, and thus get a longer service life of outdoor exposure. China promulgated the conventional hot-dip galvanizing common national standard GB / T 13912-92 [1], Suzhou channel in 1992, in addition to early adopters and widely used since there is GB 2694-81 [2]. The two main quality standards for hot-dip galvanizing has clearly defined, but there are differences between each other, and compared with some foreign galvanized standard, some of the details of the narrative quality galvanized not detailed enough. In this paper, with reference to the United States, Britain, Japan and other countries and hot-dip galvanizing ISO standards, the relevant parts of the presentations and discussions. Channel specifications mainly used height (h), leg width (b), waist thickness (d) of equal size to represent the current domestic channel sizes from No. 5-40, the corresponding height of 5-40cm. At the same height, light channel narrower than the ordinary channels of legs, waist thin and light weight. 18-40 channel number is large, non-standard channel, channel number 5-16 for the medium channel. Import channel indicate the actual size specifications and related standards. Import and export orders generally channel in determining the appropriate carbon steel (or low alloy) steel post to the specifications required by the main use. In addition to the standard number, channel no specific composition and performance series. Low-alloy channel, exhibition of Commerce Bo, Suzhou channels provided by the Hefei exhibition Bo Trading Company. Low-alloy channel, exhibition of Commerce Bo, Suzhou, Hefei Show channel Bo Trading Company (www.hfzhanbo.com) (www.hfzhanbo.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Mr. Huang.