上QQ阅读APP看本书，新人免费读10天
设备和账号都新为新人
3.4 Handling
3.4.1 Pipe components shall be handled with care and no cast，fell，rolling，drag，or touch with sharp objects would be allowed during handling.
3.4.2 Non-metallic rope shall be used to hoist，bind or fix the pipe components during lifting or handling operation.
3.4.3 No exposure or rain damage would be allowed during pipe components handling.