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GB/T 32970 Longitudinal Submerged-Arc Welded Steel Pipe For High Pressure
ASTM A423 COR-TEN Straight Seam Electric Welded Steel Pipe Fixed Length For
YB/T 5209 Precision Electrically Welded Steel Pipe For Automobile Drive Shaft
YB/T 4112 Q265GNH Welded Steel Tubes Atmospheric Corrosion Resistance For
YB/T 4028 Welded Steel Tube Straight Seam Electric Welding Galvanized Tube For
GB/T 32970 Longitudinal Submerged Arc Welded Steel Pipe For High Pressure
GB/T 28413 SA178 High Frequency Welded Carbon Steel Pipes For Boiler Heat
GB/T 33156 Cold Draw Welded Steel Tube Carbon Steel Tube For Gas Spring
GB/T 13793 Longitudinal Electric Resistance Weld Galvanized Steel Tube For
Electric Resistance Welded Carbon Steel Tubes JIS G3472 For Automobile Structral
GB/T 3091 Welded Steel Tube Low Pressure For Liquid Delivery
Cold Draw Carbon Alloy Welded Steel Pipe ASTM A530 For Auto Refrigeration
