Carbon steel welded seamless elbow

Seamless elbow is also called seamless steel pipe elbow English name seamless elbow or seamless pipe elbow, seamless elbow pipe fittings are divided into two types: hot-rolled (extruded) seamless elbow pipe fittings and cold-drawn (rolled) seamless elbow pipe fittings because of their different manufacturing processes. Cold-drawn (rolled) pipes are divided into two types: round pipes and special-shaped pipes. The raw material for rolling seamless elbow pipe fittings is round tube blanks, which are cut and processed by the cutting machine to process billets with a length of about one meter, and are sent to the furnace for heating by conveyor belts. The billet is fed into a furnace to heat at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Temperature control in the furnace is a key issue. After the round tube billet is released from the oven, it should be pierced by a pressure perforator. Generally, the more common perforator is the tapered roller perforator, which has high production efficiency, good product quality, large perforation expansion, and can thread a variety of pipe fittings. After perforation, the round tube billet is successively rolled by three rolls of oblique, continuous rolling or extruding. After extrusion, the pipe should be de-tubed and de-sized. The sizing machine rotates into the steel embryo at high speed through a tapered drill bit to make holes to form pipe fittings. Executive standards: GB/T12459-2017, GB/T13401-2017. Japanese Standard Number Description JIS B2311 General Steel Butt Welded Pipe Fittings JIS B2312 Steel Butt Welded Pipe Fittings JIS B2313 Steel Plate Butt Welded Pipe Fittings JIS B2316 Steel Socket Welded Pipe Fittings. American Standard for Implementation: Standard Number Description ASME/ANSI B16.9 Factory-Manufactured Forged Steel Butt Welded Pipe Fittings ASME/ANSI B16.11 Socket Welded and Threaded Forged Pipe Fittings ASME/ANSI B16.28 Steel Butt Welded Small Radius Elbows and Return Bends ASME B16.5 Pipe Flanges and Flange Fittings MSS SP-43 Forged Stainless Steel Butt Welded Pipe Fittings MSS SP-79 Socket Weld Reduced Inserts MSS SP-83 Socket Weld and Threaded Bond Joints MSS SP-97 Integral Reinforced Pipe Seat Electric Power Standard for Socket Welded, Threaded and Butt-welded Ends Description GB2000 Thermal Power Plant Steam Pipe Parts and Components Typical Design Manual DL/T515-93 Power Station Bend Pipe D-GD87-1101 Pipe Parts and Components Typical Design Pipe Fittings Implementation Standard Chemical Standard: Standard Number Description HGJ514 Carbon steel, low alloy steel seamless butt welded pipe fittings HGJ528 Steel seamed butt welded pipe fittings HGJ10 Forged steel socket welded pipe fittings HGJ529 Forged Steel Socket Welded, Threaded and Butt-Welded Pipe Table Sinopec Standard Standard No. Description SH3408-1996 Steel Butt Welded Seamless Pipe Fittings SH3409-1996 Forged Steel Socket Welded Pipe Fittings SH3410-1996 Forged Steel Socket Welded Pipe Fittings SH3065-1994 Petrochemical Pipe Furnace Sharp Bending and Bending Technical Standard National Standard Standard Number Description GB/T12459-2017 Steel Butt Welded Pipe Fittings Types and Parameters GB/T13401-2017 Steel Butt Welded Pipe Fittings Technical Specification GBT 14383-2008 Forged socket welded and threaded pipe fittings GB/T17185-1995 Steel flanged pipe fittings and pipe fittings implementation standard China Petroleum Standard: Standard No. Description SY/T0510-1998 Steel butt welded pipe fittings SY/T5257-2004 Steel bent pipe 02S403 Steel pipe fittings National building standard marine standard GB/T10752-1995 Marine steel pipe butt weld joint CB/T3590-94 Aluminium brass elbow