Standard classification of stainless steel flange

Specification: 1 / 2 ″～ 80 ″ (dn10-dn5000)

Pressure rating: 0.25MPa ～ 250Mpa (150Lb ～ 2500lb)

Common standards:

National standard: gb9112-88 (gb9113? 1-88 ～ gb9123? 36-88)

American Standard: ANSI B16.5, ANSI 16.47 class150, 300, 600, 900, 1500 (WN, so, BL, th, LJ, SW)

Japanese standard: JIS 5K, 10K, 16K, 20K (PL, so, BL)

German standard: DIN2527, 2543, 2545, 2566, 2572, 2573, 2576, 2631, 2632, 2633, 2634, 2638

（PL、SO、WN、BL、TH）

Italian standards: uni2276, 2277, 2278, 6083, 6084, 6088, 6089, 2299, 2280, 2281, 2282, 2283

（PL、SO、WN、BL、TH）

British Standard: bs45044506

Standards of Ministry of chemical industry: hg5010-52 ～ hg5028-58, hgj44-91 ～ hgj65-91

HG20592-97（HG20593-97～HG20614-97）

HG20615-97（HG20616-97～HG20635-97）

Standards of mechanical department: jb81-59 ～ jb86-59, JB / t79-94 ～ JB / t86-94

Pressure vessel standard: jb1157-82 ～ jb1160-82, jb4700-2000 ～ jb4707-2000

Marine flange standards: GB / t11694-94, GB / t3766-1996, GB / t11693-94, gb10746-89, GB / t4450-1995, GB / t11693-94, gb573-65, gb2506-89, cbm1012-81, cbm1013, etc