... BSI,ISO Pre-galvanized tube Satisfying price with quality, good service! msn contact: gairymiao hotmail comGalvanized tube:1.High-frequency ... , JIS, DIN, EN, BS, GB7. Surface Finish: Galvanized, electro galvanized, black8. Application: Structure /gas/fluid/oil/chemical fertilizer pipe ... houses, scaffolds, petroleum, coal gas, natural gas. Pre-galvanized tube with satisfying price and quality !!!