... ) • Zinc coating : 30-50u as your demands • Standards: ASTM, BS, GB, DIN, JIS • Color: silver white • Applicable for greenhouse, ... 195/215/235 • Zinc coating : 40-50u • Standards: ASTM,BS, GB • Color: silver white • Applicable for greenhouse, building, fences ... Sincerely Yours, Teddy Shi (Mr.) General Manager Hebei Senhai Pipeline Co.,Ltd. Add.:No.7 Beihai Rd.,Economic & Technological Development Zone, ...