HG/T 2145.4-1991
Glass-lined hand hole with mirror quick opening hand hole (English Version)

Standard No.

HG/T 2145.4-1991

Language

Chinese, Available in English version

Published By

Professional Standard - Chemical Industry

Status

Be replaced 2009-07

Replace By

HG/T 2145.4-2009

Latest

HG/T 2145.4-2015

Scope

This standard specifies the type, basic parameters and dimensions, technical requirements, etc. of quick-opening hand holes with sight glasses for glass-lined equipment. This standard is applicable to glass-lined quick-opening hand holes with sight glasses whose nominal pressure is less than or equal to 1.0 MPa and whose operating temperature is higher than -20°C and lower than or equal to 200°C.

HG/T 2145.4-1991 history

• 2015 HG/T 2145.4-2015 Quick-opening handhole with glass sight for glass-lined vessel
• 2009 HG/T 2145.4-2009 Quick-opening handhole with glass sight for glass lined steel vessel
• 1970 HG/T 2145.4-1991 Glass-lined hand hole with mirror quick opening hand hole