Nhazi na nrụpụta: JB/T8691, MSS SP-81
Ihu na ihu: GB/T15188.2, TAPPI TIS 405.8
Flange na-akwụsị njedebe: ANSI B 16.5, GB/T79-94
Nnyocha na ule: MSS SP-81, GB/T 13927