节流截止放空阀FLJ41Y

H82Y-250卡箍止回阀

卡箍角式止回阀H83Y-250

HG41A,微阻止回阀

H42H-250,H42Y-250高压直通止回阀

H62Y,H62H高压焊接止回阀

焊接角式止回阀,H63Y-250

阀套式排污阀TP41Y

油田高压止回阀H62Y-250I,H62Y-350I,H62Y-400I

井口防盗集成装置FDU-50X

油田高压止回阀DH61B-200C,DH61B-350C

油田高压止回阀DH41B-160P,DH41B-250P,DH41B-160