... Φ12~Φ50. 2. Product Features * Designed and manufactured in compliance with ACI318, JGJ107, UBC 1997, BS8110, NF35-20-1, DIN1045, ISO ... type: 4.1 SYS A: Parallel Thread Rebar Splicing with Cold Upsetting End Principle: (1) Enlarging ends of reinforced bars by cold ... coupler. 4.2 SYS B: Parallel Thread Rebar splicing with Rolled Thread End The technologies of parallel thread rebar splice include directly ...