male and female socket size: 1/4"-4" Thread standard: DIN,BSP/BSPT AND NPT male and female socket1.Body material:stainless steel 304 and 316304 C%<0.08 Mn%<1.5 Si%<0.04 P%<0.04 Ni% 8-11 Cr% 18-21316 C%<0.08 Mn%<1.5 Si%<0.04 P%<0.04 Ni% 9-12 Cr% 18-21 Mo% 2-32.Product usage: Suitable for joining pipe lines of team,gas,water,oil3.Thread type:DIN, BSP/BSPT AND NPT4.Size limited: diameter within 4 ...