Product: straight coupling and reduced coupling
Standard: GB/T 11618-1999 (the national standards for copper pipe fittings),BS 864(British standards), ANSIB16.22 (American standards) and enterprise standards
Product: straight coupling and reduced coupling
Standard: GB/T 11618-1999 (the national standards for copper pipe fittings),BS 864(British standards), ANSIB16.22 (American standards) and enterprise standards