国产三级伦理在线,久久久久黄久久免费漫画,成人国产精品日本在线,欧美美最猛性xxxxxx

KSB BOA-H DN250 PN16波紋管截止閥 EN-JL1040灰口鑄鐵 耐溫300℃應用范圍：可應用于自來水、污水、建筑、食品、電力、醫藥、冶金、輕紡、能源等流體管線上作切斷或調節以及節流使用。 

KSB BOA-H DN250 PN16 Bellows Shut-off Valve EN-JL1040 Gray Cast Iron Temperature 300 ℃ Applications: It can be applied to the cutting of fluid lines such as tap water, sewage, construction, food, electricity, medicine, metallurgy, textile, Or adjust and throttle use.

結構特點：
■ 零件材質，法蘭和對焊編號尺寸可根據實際工況或用戶要求合理選配，滿足各種工程需要。
■ 雙層波紋管標準設計；
■ 散熱型閥蓋設計；
■ 閥桿升降位置指示，更直觀；
■ 儲存潤滑油裝置設計；
■ 卡簧固定閥桿螺母設計；
■ 產品結構合理、密封性能可靠、造型美觀；
■ 密封面堆焊Co基硬質合金、耐磨、耐腐、抗摩擦性能好、使用壽命長；
■ 閥桿調質及表面氮化處理，有良好的抗腐和抗摩擦性能；
Structural features:
■ Parts material, flange and butt welding number size according to the actual conditions or user requirements reasonable matching, to meet the needs of various projects.
■ double bellows standard design;
■ thermal bonnet design;
■ stem lift position instructions, more intuitive;
■ storage lubricant device design;
Retaining valve stem nut design;
■ reasonable product structure, reliable sealing performance, handsome in appearance;
■ sealing surface surfacing Co-based carbide, wear-resistant, corrosion-resistant, anti-friction performance, long service life;
Stem quenched and nitrided surface treatment, good corrosion resistance and anti-friction properties;