J61YJ61Y焊接式针型截止阀

J49HJ49H压力计针型阀，上海狄萨压力计针型阀

J48HJ48H型法兰式针型阀，上海狄萨法兰式针型阀

J24W外螺纹角式截止阀J24W外螺纹角式截止阀

J23WJ23W外螺纹截止阀，上海针型阀厂家

J23SAJ23SA外螺纹针型阀组合阀

J19WJ19W压力表三通针型阀，上海狄萨三通针型阀

J19HJ19H仪表针型阀，上海狄萨针型阀

GMJ14FGMJ14F高密封取样阀，上海狄萨针型阀

CJ123HCJ123H型多功能针型阀