Blow out proof stem/ Full bore Material: Stainless steel 304, ... Detail:enough goods in storage or within 30 daysSpecifications Blow out proof stem/ Full bore Material: Stainless steel 304, ... 4'' 2. Material: Stainless steel 304, 316, 3.Pipe thread in accordance with ANSI B2.1, BS21 1973, DIN259/2999 4 ... , Oil, gas 6. Locking device, Lug body, Blow-out proof stem/full port, Investment casting body and cap