
UL Standard Zinc EMT Couplings Set Screw Type. UL Certified Quality: Obtained 5 UL certifications from the United States ensuring high safety standards. Hot Dip Galvanized: Surface treatment provides excellent corrosion resistance for long-lasting durability. Wide Size Range: Available in trade sizes from 1/2 inch to 4 inches to fit various pipe needs. ISO9001 Certified: Company passed ISO9001:2015 quality management system certification in 2020. Customization Options: Offers full customization, minor customization, and flexible customization from designs. Forged and Casting: Manufactured using advanced forging and casting techniques for structural integrity. Fast Quotation: Quotations provided within 24 hours of inquiry for efficient business planning. Global Shipping: Products exported to over ten countries including America and Southeast Asia.