японский стандарт 27 * 7-5 цепи из нержавеющей стали

material : 201 202 301 304 and other technology: stamping process and argon-arc welding polish technology : barrel abrasive polishing with independent researched testing machine that can affiliate each product the chemical compositon and mechanical property certification The japanese standard chain is the usual type of the chain.The 27*7-5 means the inside length and inside width with the 5MM wire diametre.This type of chain is mainly used in the protecting projects,decorating projects,conections,low required drag and so on.And the weight of the chain is almost 0.44KG/m.