Flänsstandard:

National Standard GB/T9115-2000, Maskinministeriet Standard JB82-94, Ministeriet för kemisk industri Standard HG20595-97HG20617-97, Ministeriet för elektrisk makt Standard GD0508 ~ 0509, American Standard ASME/ANSI B16.5, Japan Standard JIS/KS (5K, 10K, 16K, 20K), tysk standard DIN.

Flänsarkan klassificeras på olika sätt:
1. Enligt bearbetningsläget, enligt produktmaterialet, enligt produktionsstandarden, enligt anslutningsläget, enligt produktspecifikationerna, etc. Specifika omständigheter specifika klassificering.
2. Flänsmaterial: 20#, A105, Q235A, 12CR1MOV, 16MNR, 15CRMO, 18-8, 321, 304, 304L, 316, 316L, ETC.

Amerikansk standardserie：

Standard nr. Diameter Range Pressure Class

ANSI B 16.5 (88) 1/2 "-24" Klass 150、300、600、900、1500、2500
ANSI B 16.47 (90) 26 "-60" Klass 150、300、600、900
ASME B 16.5 (96) 1/2 "-24" Klass 150、300、600、900、1500、2500
ISO7005-1 (92) 1/2 "-24" PN2.0 5.0 11.0 15.0 26.0 42.0
BS4504-3.1 (89) 1/2 "-24" Klass 150、300、600、900、1500、2500
JPI 7S-15-931/2 "-24" Klass 150、300、600、900、1500、2500
NF E29-2031/2 "-24" PN2.0 5.0 11.0 15.0 26.0 42.0
API605-8126 "-60" Klass 150、300、600
ASME B 16.36 (96) 1 "-24" Klass 300、400、600、900、1500、2500

Tysk standardserie：

Standard nr. Diameter Range Pressure Class

DIN 2630 WNDN1200-DN24001 bar
DIN 2631 WNDN10-DN36006 bar
DIN 2632 WNDN200-DN300010-bar
DIN 2633 WNDN10-DN200016-bar
DIN 2634 WNDN200-DN100025 bar
DIN 2635 WNDN10-DN50040-bar
DIN 2636 WNDN10-DN40064-bar
DIN 2637 WNDN10-DN350100 bar
DIN 2638 WNDN10-DN300160 bar
DIN 2573 PLDN10-DN5006-bar
DIN 2576 PLDN10-DN50010-bar
DIN 2527 PLDN10-DN5006 10 16 25 40 Bar
DIN 2501 WNDN15-DN50010 16 25 40 63 100 160 250 320 400 Bar
DIN 2566 THDN15-DN50010 16 BAR
DIN 2655 PLDN15-DN5000,25 0,6 1,0 1,6 2,5 4,0 bar
DIN 2656 PLDN15-DN5000,25 0,6 1,0 1,6 2,5 4,0 bar

Japansk standardserie：

Standard nr. Diameter Range Pressure Class

JIS B 2220 PLDN10-DN4005K
JIS B 2220 SODN450-DN10005K
JIS B 2220 PLDN10-DN22510K
JIS 2220 SODN250-DN100010K
JIS 2220 SODN10-DN120016K 20K 30K
JIS 2220 WNDN15-DN40030K

National Standard Series：

Standard nr. Diameter Range Pressure Class

GB/T 9112-9113.4-2000DN10-DN2000PN 0,25 0,6 1,0 2,5 4,0 6,3 10,0 16,0 MPa
JB/T 74-86,2-94DN10-DN1600PN 0,25 0,6 1,0 2,5 4,0 6,3 10,0 16,0 20,0 MPa
HG 20592-20626-97DN10-DN2000PN 0,25 0,6 1,0 2,0 2,5 4,0 5,0 6,3 10,0 11,0
15.016.0 25.0 26.0 42.0 MPa
SH 3406-96DN10-DN1500PN 1.0 2.0 5.0 6.8 10.0 15.0 25.0 42.0 MPa
GB/T 17241.1-17241.7DN10-DN4000PN 0,25 0,6 1,0 1,6 2,0 2,5 4,0 5,0 MPa
GB/T 15530.1-15530.8DN10-DN1800PN 0,6 1,0 1,6 2,0 2,5 4,0 5,0 MPa

Power Ministry Series：

Standard nr. Diameter Range Pressure Class

D-GD86-0510-0537DN15-DN2000PN 0,25 0,6 1,0 1,6 2,5 4,0 6,4 10,0 MPa
DG0511-0541DN15-DN1000PN 0,25 0,6 1,0 1,6 2,5 4,0 6,4 10,0 20,0 32,0 MPA

Tryckkärlserie ：

Standard nr. Diameter Range Pressure Class

B/T 4701-2000 (A) DN300-DN2000PN 0,25 0,6 1,0 1,6 10,0 MPa
JB/T 4702-2000 (B) DN300-DN3000PN 0,25 0,6 1,0 1,6 2,5 4,0 MPa
JB/T 4703-2000 (lång hals) DN300-DN2000PN 0,6 1,0 1,6 2,5 4,0 6,4MPA

Fraktserie：

Standard nr. Diameter Range Pressure Class

GB573-581-76DN20-DN500PN 0,6 1,0 1,6 2,5 4,0 6,4 MPa
GB2506-2507-89DN10-DN2000PN 0,25 0,6 1,0 1,6 2,5 MPa
GB4450-84DN20-DN500PN 0,6 1,0 1,6 MPa
GB10746-10749-89DN10-DN600PN 0,6 1,0 1,6 2,5 4,0 6,4 MPa