Astm A335 P11 P11 PIPA BAJA SOMALless
Lokacin da frangarfin F11 yana da zafi da aka bi da, alloy karfe na F22 an samar da farris. Wadannan flanges suna da ƙarfin tension na 655 mpa da kuma yawan amfanin ƙasa na 517 MPa.
Alloy 20 (Aliloy 20) Shin allhoy-tushen-tushen-tushen-da aka kirkira don tsayayya da sulfuriic acid. Yana da kyakkyawan juriya ga lalata lalata na sulfuric; Tana da juriya ga phosphoric acid, nitric acid da kuma muhalli mai wahala, crosrosion mai rauni da crack rauni. Saboda haka, alloy 20 yana da sunan anti-corrosion alloy; Tana da kewayon aikace-aikace da yawa: kamar su: sunadarai, abinci, abinci, abinci, samar da wutar lantarki da masana'antu na wutar lantarki zasuyi amfani da shi. Don juriya don tattara lalata da chloride rauni, hadarin lalata damuwa matsalolin rikice-rikice, da sauransu, alloy 20 ana amfani da DIDOL 20.