... ,frame ISO9001,CE certificate Safe! scaffolding pipe standards ASTM, DIN, EN, BS, JIS, used in structure scaffolding system, frameISO9001, CE certificatescaffolding pipe, including ... : 16mm-603mm, Wall thickness:0.8mm---20mm. PURPOSE: fence tube, structural tube, scaffolding tube, water transferring tube, oil pipe, casing pipe, sprinkler fire fighting system ...