XH41X鸭嘴阀

H64Y、H44Y锻钢旋启式止回阀

61Y、H64Y锻钢自密封止回阀

H61Y、H64Y高压自密封止回阀

H11Y、H11H内螺纹锻钢止回阀

H61Y、H61H承插焊锻钢止回阀

H41Y、H41H锻钢高压止回阀

H41Y、H41H锻钢法兰端止回阀

H41Y、H41H锻钢止回阀

H41Y、H41H锻钢法兰止回阀

H41Y、H41H锻钢升降止回阀

H12W锻压黄铜立式止回阀