... : A106/A53 GRB, ST3 DIN 1629 st45 seamless pipe for water Marking :P/O No,SPEC. Grade,Size, Heat No.or ... as per customer requirement.UsageThe products are widely used in fertilizer, petroleum, centra-station, boiler, powerstation,shiping military,chemical industry, environment ... price" to serve you! DIN 1629 st45 seamless pipe for water