ASTM A53 A32, A36, Ah36, Dh36, D32 Dh32 10# 20# 45# Q195 Q215 Q235 Q345 Q235B Q355b Sea1002 Sea1006 열간압연 이음매 없는 티타늄/니켓/흑색/탄소강관
Big Diameter 219mm to 3800mm ASTM A106 API 5L ERW / SSAW / LSAW Carbon Tube Galvanized 5CT Oil and Gas A53 Q235 Black Iron Spiral Welded Pipe for Building
API 5L A106 A53 304 316L Ss/Gi/ERW/Black/Oil/Alloy/Square/Round/Precision/Carbon/Stainless/Galvanized/Aluminum /Spiral/Seamless/Welded/Steel Tube Pipe 15%off
A106 Sch40 Rectangular Round Square Hot Dipped/DIP Galvanized Ms Iron Gi Mild Carbon Steel Seamless Pipe LSAW ERW Black Welded for Construction
at a Low Price Factory Direct Sales 40X80 40X60 Hot-Rolled and Cold-Rolled 35#45 # 40cr Seamless Carbon Steel Round or Square Tubes
ASTM A36 Ss400 S235jr Q235B Q345 Q355 Hot-DIP Galvanized Mild Steel Square Pipe Rectangular Tube Ms Gi Hollow Section Steel Tube 2X4 6m 12m Tubing Price