Hot Dip Galvanized Square PipeDecember 12, 2019
API 5L GR.B SSAW Pipe for CNPC in IraqDecember 17, 2019
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
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.