... :We can produce and supply to you various steel pipes according to international standard. Black steel pipes are used ... recognition from many customers since our good quality and service. 2. Production standard: ASTM A53, BS1387, EN10255, EN10240, EN10220, EN10219, EN39 ... WT:0.8mm-8.5mm Length:12m PRODUCTHOT DIP GALVANIZED STEEL PIPE/GI LINE PIPETECHNIQUEWELDED/ERWMATERIALQ195,Q215,Q235,Q275 ...