Steel Pipe Nipple:
American Standard: ASTM A733 / Pipe: ASTM A53 / ASTM A106 / Threads: ANSI B1.20.1
British Standard: BS EN10241 / Pipe: BS1387 / Threads: ISO 7/1
DIN Standard: DIN2982 / PIPE: DIN2440 / Threads: DIN2999
Steel Merchant Coupling:
American Standard: ASTM A865 / British Standard : BS EN10241 / DIN Standard : DIN 2999