What is class A boiler and class B boiler?

Jiangsu Sifang Boiler Co., Ltd. has the manufacturing license of Class A boiler and Class A1 pressure vessel, ASME certification qualification, boiler installation, alteration, repair and maintenance license, and have passed IO9001 quality management system certification, ISO14001 environmental management system certification, ISO45001 occupational health and safety management system certification. Moreover, we has more than 40 technical patents of boiler products.

Class A boilers: boilers with p (gauge pressure) ≥ 3.8MPa, including

Supercritical boiler, p ≥ 22.1MPa

Subcritical boiler, 16.7MPa ≤ p ＜ 22.1MPa

Ultra high pressure boiler, 13.7 MPa ≤ p ＜ 16.7 MPa

High pressure boiler, 9.8 MPa ≤ p ＜ 13.7 MPa

Subhigh pressure boiler, 5.3MPa ≤ p ＜ 9.8MPa

Central Asia boiler, 3.8 ≤ p ＜ 5.3MPa

Class B boiler:

① Steam boiler, 0.8MPa ＜ p ＜ 3.8MPa

② Hot water boiler, p ＜ 3.8MPa, and t ≥ 120 ℃ (t is the rated outlet water temperature)

③ Gas phase organic heat carrier boiler, Q ＞ 0.7MW (Q is the rated power); Liquid phase organic heat carrier boiler, Q ＞ 4.2MW

The above is Jiangsu Sifang Boiler's answer to this question. If you have any questions about other boiler related issues, please consult Jiangsu Sifang Boiler's online customer service or call 0516-85871846 or 0516-85532705. Jiangsu Sifang Boiler's professional technicians will answer your questions in time.