stainless steel hex welding nipple S230M welding nipple Specifications:1/8"- 4" Material:SS304,31 stainless steel hex welding nipple1. Precision casting stainless steel quick coupling series2.Model:outer cone,inner cone,welding nipple,nut,ball 3.Specifications: 1/4,3/8,1/2,3/4,1,1 1/4,11/2,2,2 1/24.Weight: 0.12kg - 4.55 kg4.Material: AISI 304,3165.Test standards: API5986.Standard thread: NPT, ...