... pipe standard ASTM, DIN, EN, BS, JIS, used in structure scaffolding system,frame ISO9001,CE certificate Safe! scaffolding pipe ... , BS, JIS, used in structure scaffolding system, frameISO9001, CE certificatescaffolding pipe, including ERW and Seamless, round and rectangular or square, aew according ... tube (with groove available), EMT conduit, furniture tube and so onCERTIFICATE: ISO9001, UL, FM, CE