Pre-Galvanized Steel Pipe

Pre-galvanized steel pipe is made of galvanized steel strip.However, its antiseptic properties is poor than hot dipped galvanized steel pipe.

Ⅰ.Cold Galvanizing Welding Process 

Material Inspection (Steel Pipe) — Hanging — De-greasing — Rinsing — Pickling — Washing — Dipping Fluxing — Hot Air Drying — Inside and Outside Hot-dipped Galvanizing Blow

— Cooling — Passivation and Rising — Unloading — Inspection and Trimming — Type Identification — Packaging and Storing and Transportation

Ⅱ.Product Information

Specification: OD: 21.3mm ~ 610mm

                          WT: 0.5mm ~ 20mm

                          LENGTH: 0.3mtr ~ 18mtr, Ramdon Length, Fixed Length, SRL, DRL

Standard and Grade:GB/T3091 Q195/Q215/Q235/Q345,BS1387,EN39,EN1139 S235JR/S275JR,ASTM A53 GR A/B/C,JIS G3444 STK400/STK500

Pipe Type: Electric Resistance Welded Steel Pipe (Round/Square/Rectangular)

End: Square Cut/Threaded, Burr Removed

Zinc Coating: 10~50 g/m2

Packing:Steel Strips bundled,Plastic Caps plugged,Waterproof Paper wrapped etc.

Application: Used for transporting low pressure liquid, gas and heating.