Abstract With regard to the application of thin-film hot-dip galvanizing a welded steel tube structure in vehicle construction, several test series were carried out investigate potential for hydrogen embrittlement caused by pretreatment media used process. Here, C-ring specimens produced from materials E355 and C75 different tempering states, treated hydrochloric acid-based operational pickle, ...

Tannery wastewater usually contains a high salinity due to the use of sodium chloride (NaCl) in curing and pickling. Although some no-pickle tanning and salt-free pickling technologies were developed, few of them have been widely used due to relatively poor mechanical and bulk properties of the resultant leather. Therefore, the role of NaCl in pickling and tanning should be elucidated in the fi...