... 4 type: seamless, weld 20#,45#,Q195-Q235 sqaure tube We can supply square tube with various specification.Square tube also can be named ... nameMaterial/QualitySize(mm)LengthOther sizeSquare tube/Square pipe/SHS/Square Hollow Section20#,45#,Q195-Q235(20-200)*(20-200)*(1.0-9.0 ... -412-8851567Skype: asxydsabrinaAnshan Xiyida Metallurgy Co., Ltd Q195-Q235 sqaure tube (Sabrina)