... plated Brass forged pipe plug, A-8611 model, DN15, DN20 and DN25, BSPP threaded, ISO228 parellel thread or NPT thread. Suitable for connecting ... forge,Surface Treatment: nickle, chrome, brass natural, zinc, HDGConnection type: thread (BSP, NPT), weldingStandard: ISO, GB or ASTM, ANSICertification: ISO 9001 ...