J63W-160P J63H-160P J63Y-320P DN10 304 不锈钢对焊截止针型阀,焊接针型阀 ,高温高压截止阀 ,电力用焊接针型阀 ,焊接针型截止阀,对焊截止针型阀,主要型号有J63W-64P J63W-160P J63W-250P J63W-320P J63H-64P J63H-160P J63H-250P J63H-320P J63Y-64P J63Y-160P J63Y-250P J63Y-320P J63W-160R J63W-320R J63H-320R J63H-160R J63Y-160R J63Y-320R J63Y-250R ,规格主要有 DN6 DN10 DN15 DN20 DN25,材质有20#碳钢 304SS 316SS 316L 321 12Cr1MoVG 等,在电力工程 机电工程 化工工程 仪器仪表工程 气源工程 液压工程等各种行业广泛应用。