Safon fflans:

Safon genedlaethol GB/T9115-2000, SAFON JB82-94 y Weinyddiaeth Beiriannau, safon HG20595-97 y Weinyddiaeth Diwydiant Cemegol, safon GD0508 ~ 0509 y Weinyddiaeth Pŵer Trydan, safon Americanaidd ASME/ANSI B16.5, safon Japaneaidd JIS/KS(5K, 10K, 16K, 20K), safon Almaenig DIN.

Fflansaugellir eu dosbarthu mewn amrywiaeth o ffyrdd:
1. Yn ôl y modd prosesu, yn ôl deunydd y cynnyrch, yn ôl y safon gynhyrchu, yn ôl y modd cysylltu, yn ôl manylebau'r cynnyrch, ac ati. Dosbarthiad penodol i amgylchiadau penodol.
2. Deunydd fflans: 20#, A105, Q235A, 12Cr1MoV, 16MnR, 15CrMo, 18-8, 321, 304, 304L, 316, 316L, ac ati.

Cyfres Safonol Americanaidd：

Safonol rhif. Ystod diamedr dosbarth pwysau

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

Cyfres Safonol Almaeneg：

Safonol rhif. Ystod diamedr dosbarth pwysau

Bar 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
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

Cyfres Safonol Japaneaidd：

Safonol rhif. Ystod diamedr dosbarth pwysau

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

Cyfres Safonol Genedlaethol：

Safonol rhif. Ystod diamedr dosbarth pwysau

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

Cyfres Gweinidogaeth Pŵer：

Safonol rhif. Ystod diamedr dosbarth pwysau

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

Cyfres Llongau Pwysedd:

Safonol rhif. Ystod diamedr dosbarth pwysau

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 (gwddf hir) DN300-DN2000PN 0.6 1.0 1.6 2.5 4.0 6.4mpa

Cyfres Llongau：

Safonol rhif. Ystod diamedr dosbarth pwysau

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