... scaffolding pipe standard ASTM, DIN, EN, BS, JIS, used in structure scaffolding system,frame ISO9001,CE certificate Safe! scaffolding ... pipe standards ASTM, DIN, EN, BS, JIS, used in structure scaffolding system, frameISO9001, CE certificatescaffolding pipe, including ERW ... , furniture tube and so onCERTIFICATE: ISO9001, UL, FM, CE Sell all kinds of Scaffolding pipe for construction