... x 10mm (Min.) to 1000 x 1000mm (Max.) Our RHS and SHS Hollow Section Specification:1) Size: 10 x 10mm (Min ... .)2) Wall thickness: 1.0mm - 40.0mm3) Shape: square, rectangle and other shape4) Surface finish: blue powder coating, black, blank, bright ... , Q195 - Q235B, ST37-2, S235, S355, SS400, Fe3606) Conforms to international environment and quality standards Blue SHS ...