... frame Steel pipeincluding ERW and Seamless, round and rectangular or square, aew according to standards ASTM A53, ASTM A106 ... EN39(BS1139), DIN2440/DIN2444, JIS G3444, BS1387, DIN2394, DIN2395, or similar standards. According to buyer's request is available. SIZE ... oil pipe, casing pipe, sprinkler fire fighting system tube (with groove or not), EMT conduit, furniture tube and so onCERTIFICATE: ISO9001, ...