galvanized pipe standards ASTM, API, DIN, EN, BS, JIS, UL for structure, fluid, conduit, sprinkler system,fence tubing galvanized pipe, including ERW and Seamless ... pipe, sprinkler fire fighting system tube (with groove available), EMT conduit, furniture tube and so onCERTIFICATE: ISO9001, UL, FM, CE,JIS,API ... galvanized pipe