GB/T 21539-2008
ActiveCement-purpose PU piston
混凝土泵用聚氨酯活塞
Application Summary AI generated
GB/T 21539-2008 specifies the technical requirements, test methods, inspection rules, and packaging for polyurethane pistons used in concrete pumps. It applies to the manufacturing and quality control of these pistons, which are critical components in concrete pumping equipment for construction and engineering projects. The standard ensures the pistons meet durability and sealing performance standards under high-pressure concrete delivery conditions.
Related Standards
GB/T 28494-2012
Globe valves of thermoplastics materials
JB/T 51137-1999
Product quality grading of agricultural rubber dust boot
JB/T 51136-1999
Product quality grading of engine rubber seal
GB/T 19274-2003
Geosynthetics--Plastic geocell
GB/T 19472.1-2004
Polyethylene structure wall pipeline system for underground usage--Part 1:Polyethylene double wall corrugated pipes
GB/T 19472.2-2004
Polyethylene structure-wall piping system for underground usage--Part 2:Polyethylene spirally enwound structure-wall pipes
GB/T 19470-2004
Geosythetics--Plastic geonet
GB/T 19473.3-2004
Polybutylene(PB) piping systems for hot and cold water installations--Part 3:Fittings
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.