Pre-galvanized Steel Pipe stocklist in China A pre-galvanized steel tube is made from a steel sheet that has been galvanized before being shaped and welded into a tube. Steel tubes that have been manufactured and then galvanized are occasionally called post-galvanized steel tubes, but hot-dipped steel tubes is a more common term. Because the equipment required for manufacturing is reasonably inexpensive and the process is easily scalable, galvanized steel pipe or galvanized steel tube is the most popular type of galvanized steel tube manufacturing. Because the time necessary for galvanizing steel sheet is less than that for hot-dip steel tube, the alloy layer including iron and zinc is minimal and the pure zinc layer is thick. SPECIFICATION 鈥斺€斺€?/span P Product Name: Pre galvanized steel tube Out Diameter: 18 - 113 (1/2" - 4") Thickness: 0.7 - 2.5mm Length: 6m or as per customer's requirement Pipe Ends: Plain, threaded. Grade: Q195-Q235 Application: For water, gas or other liquid delivery, construction purposes. Pre-galvanized pipe round pipe InchDiameter (mm)Thickness (mm)InchDiameter (mm)Thickness (mm) 1/2"180.7~1.61-1/2"470.75~2.5 190.7~2.047.50.75~2.5 200.7~2.048.30.75~2.5 3/4"250.7~2.2500.75~2.5 25.40.7~2.250.80.75~2.5 26.50.7~2.22"560.75~2.5 1"300.7~2.3570.75~2.5 310.7~2.3590.75~2.5 320.7~2.359.50.75~2.5 1-1/4"380.75~2.52-1/2"730.8~2.5 400.75~2.5750.8~2.5 410.75~2.53"871.0~2.5 420.75~2.54"1131.0~2.5 Pre-galvanized pipe Rectangular and Square pipe Diameter (mm)Thickness (mm)Diameter (mm)Thickness (mm)Diameter (mm)Thickness (mm) 20*300.7~2.230*600.7~2.515*150.7~2.0 20*400.7~2.530*650.7~2.516*160.7~2.0 20*500.7~2.530*700.8~2.519*190.7~2.2 20*600.7~2.535*400.8~2.520*200.7~2.3 20*750.7~2.535*450.8~2.525*250.7~2.3 20*800.7~2.530*500.8~2.530*300.7~2.3 25*300.7~2.530*600.8~2.532*320.7~2.3 25*400.7~2.530*650.8~2.535*350.7~2.3 25*500.7~2.530*700.8~2.538*380.7~2.3 25*600.7~2.535*400.8~2.540*400.7~2.3 25*650.7~2.535*600.8~2.545*450.75~2.5 25*700.7~2.535*800.8~2.548*480.75~2.5 25*750.7~2.540*500.8~2.550*500.75~2.5 30*350.7~2.540*600.8~2.560*600.75~2.5 30*400.7~2.540*800.8~2.575*750.9~2.5 30*450.7~2.550*750.9~2.580*801.2~2.5 30*500.7~2.550*1000.9~2.5100*1001.2~2.5 PRODUCTION FLOW 鈥斺€斺€?/span QUALITY INSPECTION 鈥斺€斺€?/span PACKING AND LOADING 鈥斺€斺€?/span PROCESSING 鈥斺€斺€?/spanPre-galvanized Steel Pipe stocklist in China website:http://www.xxtsteels.com/pre-galvanized-steel-pipe/