... used in structure scaffolding system, frameISO9001, CE certificatescaffolding pipe, including ERW and Seamless, round and rectangular or square ... standards. According to buyer's request is available. SIZE: 16mm-603mm, Wall thickness:0.8mm---20mm. PURPOSE ... structural tube, scaffolding tube, water transferring tube, oil pipe, casing pipe, sprinkler fire fighting system tube (with groove available ...