... days Certification:CE,BSI,ISO Pre-galvanized tube Satisfying price with quality, good service! msn contact: gairymiao hotmail comGalvanized tube:1.High-frequency welded2.Outer diameter ... galvanized pipes, welded pipes, greenhouse pipes. Our products are applied to construction, furniture, green houses, scaffolds, petroleum, coal gas, natural gas. Pre-galvanized tube with satisfying price and quality ...