Common standards for pipe fittings:

The industry standard

1) "Steel Butt Welded Seamless Pipe Fittings" GB/T 12459-2005

2) Welded Pipe Fittings Made of Steel Plate GB/T 13401-2005

3) "Power Station Steel Butt Welding Pipe Fittings" DL/T 695-1999

SH 3408 steel butt welded seamless pipe fitting

SH 3409 steel plate for butt welding pipe fitting

SH 3410 Forged steel socket welding pipe fitting

Hgj514-87 Carbon steel, low alloy steel seamless butt welding pipe fittings

CJ/T 321-2010 aluminum alloy lined plastic composite pipe and fittings

American Pipe fitting Standard

Seamless steel pipe butt welded fittings manufactured in ASME/ANSI B16.9 factory

ASME/ANSI B16.11 socket welded and threaded forged pipe fittings

ASME/ANSI B16.28 Steel butt welded small radius elbows and back bends

ASME B16.5 Pipe flanges and flange fittings

MSS SP-43 forged stainless steel butt welded pipe fittings

MSS SP-83 socket welding and threaded connector

MSS SP-97 socket, thread and butt weld end integral reinforcement

Malleable cast iron threaded pipe ASME B16.3-1998

Pipe fitting classification

1. Divided by material:

Carbon steel: ASTM/ASME A234 WPB, WPC

Alloy: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV

Stainless steel :ASTM/ASME A403 WP 304-304L-304H-304LN-304N

ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Cryogenic steel :ASTM/ASME A402 WPL3-WPL 6

High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon-chromium leaching, PVC, PPR, RFPP(reinforced polypropylene), etc.

2. The production method can be divided into pushing, pressing, forging, casting, etc.

3. According to the manufacturing standards, it can be divided into national standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc.