标准: API602, BS5352, ANSi, DIN and JIS standards 闸阀,截止阀,止回阀 :尺寸3/8" to 4"
标准: API602, BS5352, ANSi, DIN and JIS standards
闸阀,截止阀,止回阀 :尺寸3/8" to 4"