Square steel tube comes in different sizes, specifications and wall thicknesses. Its uniformity makes it predictable to use and visually appealing. It has a high weight-to-strength ratio. It’s easy to bend, and because square steel tubing is inexpensive, it’s cost-effective- even for large projects.
Which Specifications We Can Offer?
A.Supply Grade: Q195~Q235, Q345, Q345B, S235, S335, S235JR, S335JR, STK400/500;
B. Supply Standard: GB/T6728:2002, ASTM A500 Gr.A.B.C., JIS G3466, EN10210, EN10219;
C. Surface finished: Black, Bare, Varnish coating, anti rust oil;
How to Produce black ERW Square Hollow Sections?
ERW black square hollow section is easily recyclable. Many projects take advantage of square steel tubing, including all types of buildings, highway guardrails and signage, support columns, trusses, bridges, heavy equipment, storage systems, and exercise equipment.
There is a complete set of production line for ERW square hollow section.We use steel strips (steel coils) for raw materials,then through a variety of processing technology,such as uncoiling flattening,shearing and butt welding,circle shearing,loop shoring,roll forming and cttting etc.
The ERW square and rectangular steel tubes are mainly used in engineering and construction, glass walls, decorative doors and windows, steel, fence, machinery manufacturing, automobile manufacturing, electronics manufacturing, shipbuilding, container manufacturing, electricity, agriculture, agricultural greenhouses, bike racks, motorcycle frame, shelves, fitness equipment, leisure and travel goods, steel furniture, a variety of oil casing, tubing and line pipe, water, gas, sewage, air, heating and other fluid transport, fire fighting and stent, construction and other fields