Flensstandert:

Nasjonale standert GB/T9115-2000, Ministearje fan Masjinerie STANDERT JB82-94, Ministearje fan Gemyske Yndustry standert HG20595-97HG20617-97, Ministearje fan Elektryske Enerzjy standert GD0508 ~ 0509, Amerikaanske standert ASME/ANSI B16.5, Japanske standert JIS/KS (5K, 10K, 16K, 20K), Dútske standert DIN.

Flenzenkin op ferskate manieren klassifisearre wurde:
1. Neffens de ferwurkingsmodus, neffens it produktmateriaal, neffens de produksjestandert, neffens de ferbiningsmodus, neffens de produktspesifikaasjes, ensfh. Spesifike omstannichheden spesifike klassifikaasje.
2. Flensmateriaal: 20#, A105, Q235A, 12Cr1MoV, 16MnR, 15CrMo, 18-8, 321, 304, 304L, 316, 316L, ensfh.

Amerikaanske standertsearje：

Standert nr. Diameterberik drukklasse

ANSI B 16.5(88)1/2"-24" Klasse 150,300,600,900,1500,2500
ANSI B 16.47(90)26"-60"Klasse 150,300,600,900
ASME B 16.5(96)1/2"-24" Klasse 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" Klasse 150,300,600,900,1500,2500
JPI 7S-15-931/2"-24" Klasse 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" Klasse 150,300,600
ASME B 16.36(96)1"-24" Klasse 300,400,600,900,1500,2500

Dútske standertsearje：

Standert nr. Diameterberik drukklasse

DIN 2630 WNDN1200-DN24001 Staaf
DIN 2631 WNDN10-DN36006 Staaf
DIN 2632 WNDN200-DN300010 Staaf
DIN 2633 WNDN10-DN200016 Staaf
DIN 2634 WNDN200-DN100025 Staaf
DIN 2635 WNDN10-DN50040 Staaf
DIN 2636 WNDN10-DN40064 Staaf
DIN 2637 WNDN10-DN350100 Bar
DIN 2638 WNDN10-DN300160 Bar
DIN 2573 PLDN10-DN5006 Staaf
DIN 2576 PLDN10-DN50010 Staaf
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

Japanske standertsearje：

Standert nr. Diameterberik drukklasse

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

Nasjonale standertsearje：

Standert nr. Diameterberik drukklasse

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-searje：

Standert nr. Diameterberik drukklasse

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

Drukfatserie:

Standert nr. Diameterberik drukklasse

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 (lange hals) DN300-DN2000PN 0.6 1.0 1.6 2.5 4.0 6.4mpa

Ferstjoersearje：

Standert nr. Diameterberik drukklasse

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