... , Australian, Japanese style.... 2. forged or pressed 3. Q235 British type pressed and forged double coupler 1. Material: Q235 2. Size ... or hot dip galvanized. 4. British type drop forged double coupler weight: 1.05kg,British type pressed double coupler weight: 0.82kg ... AS1576 standard couplers, Germany, American, Brazilian style couplers.....etc British type drop forged 48.3mm diameter double coupler