American National System For Applied Standards (ANSI)

◆ Pipe:
Large OD series (ANSI B36.10 and B36.19)
Nominal diameter range: (DN6~DN2000)mm
Wall thickness indication method:
(1) The wall thickness is indicated by the pipe table number "Sch";
(2) The wall thickness is expressed by the weight of the pipe.

◆Pipe flange: American flange
Pressure Rating: CL150 300 400 600 900 1500 2500 Psi 7 grades
Nominal Diameter: DN15~600mm
Flange sealing surface: raised face (RF), concave-convex surface (MR), tongue and groove surface (TAG), metal ring connecting surface 4 types
Flange type: flat welding type, socket welding type, butt welding type, threaded connection type, loose sleeve type and flange cover 6 kinds.
◆American application standard system ANSI commonly used standards are:
ANSI/ASME B36.10 Seamless and Welded Steel Tubes and Pipes
ANSI/ASME B36.19 Seamless and Welded Stainless Steel Pipe and Tubes

ANSI/ASME B16.9 Factory-Fabricated Steel Butt-Welded Pipe Fittings
ANSI/ASME B16.11 Socket Weld and Threaded Forged Pipe Fittings
ANSI/ASME B16.28 Steel butt-welded small radius elbows and return elbows
ASME/ANSI B16.34 Valves for flanged, threaded, and welded connections
ASME/ANSI B16.5 Pipe flanges and flange fittings
ASME/ANSI B16.36 Orifice plate flanges
ASME/ANSI B16.42 Ductile iron flanges and flange fittings
ASME/ANSI B16.47 Large-diameter steel flanges
ASME/ANSI B16.20 Wrap-around, overmolded gaskets for pipe flanges and metal gaskets for annular grooves
ASME/ANSI B16.21 Nonmetallic Flat Gaskets for Pipe Flanges
ASME/ANSI B18.2.1 Square and hexagonal head bolts and threads
ASME/ANSI B18.2.2 Square and hexagonal head nuts
API std605 large diameter flanges, flange covers
API std526 steel pressure relief valves with flange connection
API std598 inspection and testing of valves
API std599 flanged and welded connection metal plug valve
API std600 steel gate valve with flange and butt welding connection
API std602 small steel gate valves (compact gate valves)
API std603 Flanged Valves for 150 lb Corrosion Resistance
API std608 metal ball valves for flanged and butt-welded connections
API std609 Butterfly Valves for Lug Type and Butt Clamp Type
API std6D pipeline valve specification
MSS SP-44 Flat Weld Flanges with Necks