HDG Spiral-welded steel tubes for structures, quay wall constructions and other foundation projects.The most important applications are:- Structures                                                                                                                                                                -Water& Gas Pipeline- Combined walls, dolphins and mooring posts- Foundation and anchor piles- Struts for the support of sheet pile walls- Pillars for bridges  The tubes can be delivered as complete end products such as piles with interlocks for combiwalls,  struts with connection plates, etc. ITEM Hot dip galvanized (HDG) spiral-welded (SAW) steel tube Standard: GB,ASTM, EN,JIS Dimensions: 200~1400mm Grade: ST35,Q235,Q345,10#-45#,A53-A369,API J55-API P110 Place of Origin: Tianjin China (Mainland) Brand Name: HXT Zinc coating thickness grade GR.60~85,400~ 600g/m2 Type: SAW Application: Structure,Accessorize, Construction, Water transportation Trade Terms: FOB,CIF,CFR Payment: T/T,L/C Certificate: ISO9001:2000,SGS,BV Package: Standard export package Delivery Time: 7-10 workdays Shipping Port: Xingang,Tianjin,China Wall Thickness: 2-30mm Length: 2~12.5m,as required Technique: Hot dip galvanizing GB/T13912/ASTM A123 Productivity: 10000 tons/month