D343H碳钢蝶阀

D71X脱硫蝶阀

D671X/D641X气动蝶阀

D341H大口径蝶阀

H64Y磅级电站旋启式止回阀

H61Y国标电站止回阀

H42Y-160/320升降式高压止回阀

H83H/Y卡箍角式止回阀

H42W-16P不锈钢立式止回阀

H41W-16P不锈钢升降式止回阀

H11Y、H14Y、H61Y、H64Y内螺纹锻钢止回阀、焊接式锻钢止回阀

H41Y、H44Y锻钢法兰端止回阀