This standard specifies the safety technical inspection requirements for spreaders used in oil drilling and well workovers. This standard applies to spreaders used for oil drilling and well workovers.
SY/T 6605-2004 history
2018SY/T 6605-2018 Specifications for safety technical inspection of spreaders used in oil drilling and well workovers
2011SY/T 6605-2011 Safe technical inspection code of hoist specially used in petroleum industry
2004SY/T 6605-2004 Specifications for safety technical inspection of oil drilling and workover spreaders