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ASTM A978 Plastic Coated Steel Pipe Pre Coated Polyethylene Lined Composite Rib
EN 1123-1 S235JR Hot Dip Galvanized Tube Welded Steel Tube For Sewer Pipes
EN 39 S235GT Scaffolding Steel Pipe Loose Welded Steel Tubes For Tube And
GOST 5005 20 Cold Formed Steel Tube Electric Welded Steel Pipes For Cardan
DIN 17177 St37.8 Electric Resistance Welded Steel Pipe Electric Pressure Pipe
DIN 2458 ST37.2 Welded Round Tube ERW Welded Steel Tube For General Purpose
DIN 17120 St37-2 Structural Steel Pipe Welded Circular Steel Tubes For
DIN 1628 ST37.4 Electric Resistance Welded Pipe Non Alloy Welded Steel Tubes For
JIS G3457 STPY400 Welded Steel Tube ARC Welded Carbon Steel Pipes For General
JIS G3442 SGPW Welded Steel Tube Galvanized Steel Pipes For Ordinary Piping
ASTM A53 Welded Steel Tube Black Hot Dipped Zinc-Coated For General Purpose
ASTM F1083 NPS1 Welded Steel Tube Hot-Dipped Galvanized For Fence Structures