Stainless steel (SS) bush pipes and reducing bushings are heavy-duty fittings or thick-walled tubular components used to reduce pipe sizes, absorb wear, or transition connections in industrial and plumbing systems. They are typically specified by material grade, nominal bore size, wall thickness or schedule, and manufacturing standard. Key Specifications Material Grades • SS 304 / 304L: Standard austenitic grade; offers great corrosion resistance and formability for general water and chemical use. • SS 316 / 316L: Marine grade with molybdenum; provides superior resistance to chlorides, pitting, and harsh industrial chemicals. • SS 410: Martensitic stainless steel; offers higher strength and hardness for specialized mechanical or high-wear bush applications. Dimensions & Sizing • Size Range: Nominal sizes commonly span from 1/8″ up to 20″ (larger custom sizes available for heavy bush applications). • Configuration: Threaded (BSP/NPT male-to-female reductions) or plain/seamless heavy-wall thick sections for machining into custom bushings. • Wall Thickness / Schedules: Heavy schedules like Sch 40, Sch 80, Sch 160, or Schedule XXS to withstand high structural and internal fluid pressures. Manufacturing Standards • ASTM / ASME: Compliant with standards such as ASTM A312 (seamless and welded pipe) or ASTM A351/A182 for cast/forged fittings. • Threads: BSP (British Standard Pipe) or NPT (National Pipe Thread) matching ISO 7/1 specifications. If you can share the specific application (such as plumbing reduction or heavy mechanical machinery), size range, or grade preference (304 vs 316), I can help you find exact dimensional charts or pressure ratings. AI responses may include mistakes.