Tianjin Zhengda General Steel Pipe Technology Co.,Ltd

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Black Painted Seamless Steel API 5L Line Pipe	Hot-dipped Galvanized Square and Rectangular Steel Pipe and Galvanized Square and Rectangular Hollow	High Anti-corrosion Seamless Line Pipe For Oil And Gas	ERW Structural And Construction Steel Pipe
ASTM A53/BS 1387 H.F. Hot-dipped Galvanized ERW Steel Pipe	Linepipe API 5L Grade B X42 X46 X52 PSL-1 PSL-2 with 3 Layer Polyethylene Coating as DIN 30670 Stand	Spiral Welded Steel Pipe for Steel Structure and Construction	API 5L ERW Linepipe for Petroleum and Natural Gas Transportation
Spiral Submerged ARC Welded (SSAW) Steel Piling Pipe for High Bridge and High Construction	Tube and Pipe End Facing and Bevelling Machine	ASTM A53 High Frequency Longitudinal Seam Electric Resistance Welded (ERW) Carbon Steel Round Tube a	Rectangular Carbon Steel Tube and Pipe and Rectangular Hollow Structural Section
High Frequency Longitudinal Electric Resistance Welded ERW API Linepipe Production Line	Square Hollow Structural Section Steel Tube And Pipe For Construction	Hot Dipped Galvanized Seamless Carbon Steel Pipe	Carbon Steel Metal Strip Sheet Slitting Production Line