CVWR供应CVWR对夹式*止回阀

H72H供应H72H对夹立式高压止回阀

DH44Y供应DH44Y低温止回阀

GH41Y*GH41Y德标止回阀

H40J*H40J 衬胶、衬氟浮球式止回阀

H61H供应H61H承插焊锻钢止回阀

300X供应300X缓闭止回阀

EG641F46供应EG641F46气动衬胶隔膜阀、衬氟隔膜阀

J641H供应*J641H气动铸钢法兰截止阀

CS19H*热动力式蒸汽疏水阀

EG41W供应EG41W英标衬胶隔膜阀

ZXB供应ZXB型系列耐温耐腐自吸式化工离心泵