weldtubeis widely used in industrial fields, with Professional Manufacturing ,we can offer you best quality square tube with competetive price. The square tube we can make as below: Technique : welded Specification : 10 200mm Thickness : 0.5mm --15mm Length : 3-17m or as your demand (fixed length and random length , customization) Process Methodcold drawn/ cold pligered high frequency welded Material : Q195-Q345, GR.B Standard : GB3091-2001, ASTM A53, ASTM A106 EN10216,EN10219 Surface treatment : galvanized,oiled, painted black or as per customers' request payment and shipping terms Minimun order quantity : 20 tons Price : FOB xingang, China USD 450-780 Packing details : in bundles or in loose or seaworthy packing at sellers option or as per customers’ requirement Delivery time : 3-20 days after received L/C or T/T or westen union Payment terms : L/C or T/T or as customers' demand hope your inquiries, our company can give you best service to make sure our further cooperation under the win-win principal!